| 1. | Which coordinate system is a device-dependent coordinate system? |
| A. | World Coordinate System |
| B. | Model Coordinate System |
| C. | User Coordinate System |
| D. | Screen Coordinate System |
| Answer» D. Screen Coordinate System | |
| 2. | Which of the following is the default coordinate system? |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» B. World Coordinate System | |
| 3. | When every entity of a geometric model remains parallel to its initial position, the transformation is called as |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» B. World Coordinate System | |
| 4. | In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved? |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» B. World Coordinate System | |
| 5. | The matrix representation for translation in homogeneous coordinates is |
| A. | User Coordinate System |
| B. | World Coordinate System |
| C. | Screen Coordinate System |
| D. | None of the above |
| Answer» B. World Coordinate System | |
| 6. | The matrix representation for scaling in homogeneous coordinates is |
| A. | P’=S*P |
| B. | P’=R*P |
| C. | P’=dx+dy |
| D. | P’=S*S |
| Answer» A. P’=S*P | |
| 7. | The two-dimensional rotation equation in the matrix form is |
| A. | P’=T+P |
| B. | P’=S*P |
| C. | P’=R*P |
| D. | P’=dx+dy |
| Answer» C. P’=R*P | |
| 8. | What is the use of homogeneous coordinates and matrix representation? |
| A. | To treat all 3 transformations in a consistent way |
| B. | To scale |
| C. | To rotate |
| D. | To shear the object |
| Answer» A. To treat all 3 transformations in a consistent way | |
| 9. | If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as |
| A. | (x’, y’, z’) |
| B. | (x, y, z) |
| C. | (x’, y’, w’) |
| D. | (x’, y’, w) |
| Answer» D. (x’, y’, w) | |
| 10. | For 2D transformation the value of third coordinate i.e. w (or h) =? |
| A. | 1 |
| B. | 0 |
| C. | -1 |
| D. | Any value |
| Answer» A. 1 | |
| 11. | We can combine the multiplicative and translational terms for 2D into a single matrix representation by expanding |
| A. | 2 x 2 matrix into 4×4 matrix |
| B. | 2 x 2 matrix into 3 x 3 |
| C. | 3 x 3 matrix into 2 x 2 |
| D. | Only c |
| Answer» B. 2 x 2 matrix into 3 x 3 | |
| 12. | The general homogeneous coordinate representation can also be written as |
| A. | (h.x, h.y, h.z) |
| B. | (h.x, h.y, h) |
| C. | (x, y, h.z) |
| D. | (x,y,z) |
| Answer» B. (h.x, h.y, h) | |
| 13. | In homogeneous coordinates value of ‘h’ is consider as 1 & it is called….. |
| A. | Magnitude Vector |
| B. | Unit Vector |
| C. | Non-Zero Vector |
| D. | Non-Zero Scalar Factor |
| Answer» D. Non-Zero Scalar Factor | |
| 14. | Which co-ordinates allow common vector operations such as translation, rotation, scaling and perspective projection to be represented as a matrix by which the vector is multiplied? |
| A. | vector co-ordinates |
| B. | 3D co-ordinates |
| C. | affine co-ordinates |
| D. | homogenous co-ordinates |
| Answer» D. homogenous co-ordinates | |
| 15. | In Coordinates, a points in n-dimensional space is represent by (n+1) coordinates. |
| A. | Scaling |
| B. | Homogeneous |
| C. | Inverse transformation |
| D. | 3D Transformation |
| Answer» B. Homogeneous | |
| 16. | A translation is applied to an object by D |
| A. | Repositioning it along with straight line path |
| B. | Repositioning it along with circular path |
| C. | Only b |
| D. | All of the mentioned |
| Answer» A. Repositioning it along with straight line path | |
| 17. | We translate a two-dimensional point by adding |
| A. | Translation distances |
| B. | Translation difference |
| C. | X and Y |
| D. | Only a |
| Answer» D. Only a | |
| 18. | The translation distances (dx, dy) is called as |
| A. | Translation vector |
| B. | Shift vector |
| C. | Both a and b |
| D. | Neither a nor b |
| Answer» C. Both a and b | |
| 19. | In 2D-translation, a point (x, y) can move to the new position (x’, y’) by using the equation |
| A. | x’=x+dx and y’=y+dx |
| B. | x’=x+dx and y’=y+dy |
| C. | X’=x+dy and Y’=y+dx |
| D. | X’=x-dx and y’=y-dy |
| Answer» B. x’=x+dx and y’=y+dy | |
| 20. | The two-dimensional translation equation in the matrix form is |
| A. | P’=P+T |
| B. | P’=P-T |
| C. | P’=P*T |
| D. | P’=P |
| Answer» A. P’=P+T | |
| 21. | ——-is a rigid body transformation that moves objects without deformation. |
| A. | Rotation |
| B. | Scaling |
| C. | Translation |
| D. | All of the mentioned |
| Answer» C. Translation | |
| 22. | A straight line segment is translated by applying the transformation equation |
| A. | P’=P+T |
| B. | Dx and Dy |
| C. | P’=P+P |
| D. | Only c |
| Answer» A. P’=P+T | |
| 23. | Polygons are translated by adding to the coordinate position of each vertex and the current attribute setting. |
| A. | Straight line path |
| B. | Translation vector |
| C. | Differences |
| D. | Only b |
| Answer» D. Only b | |
| 24. | To change the position of a circle or ellipse we translate |
| A. | Center coordinates |
| B. | Center coordinates and redraw the figure in new location |
| C. | Outline coordinates |
| D. | All of the mentioned |
| Answer» B. Center coordinates and redraw the figure in new location | |
| 26. | A two dimensional rotation is applied to an object by |
| A. | Repositioning it along with straight line path |
| B. | Repositioning it along with circular path |
| C. | Only b |
| D. | Any of the mentioned |
| Answer» C. Only b | |
| 27. | To generate a rotation , we must specify |
| A. | Rotation angle θ |
| B. | Distances dx and dy |
| C. | Rotation distance |
| D. | All of the mentioned |
| Answer» A. Rotation angle θ | |
| 28. | The rotation axis that is perpendicular to the xy plane and passes through the pivot point is known as |
| A. | Rotation |
| B. | Translation |
| C. | Scaling |
| D. | Shearing |
| Answer» A. Rotation | |
| 29. | Positive values for the rotation angle θ defines |
| A. | Counter clockwise rotations about the end points |
| B. | Counter clockwise translation about the pivot point |
| C. | Counter clockwise rotations about the pivot point |
| D. | Negative direction |
| Answer» C. Counter clockwise rotations about the pivot point | |
| 30. | The original coordinates of the point in polar coordinates are |
| A. | X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ) |
| B. | X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ) |
| C. | X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ) |
| D. | X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ) |
| Answer» B. X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ) | |
| 31. | From the following, which one will require 4 matrices to multiply to get the final position? |
| A. | Rotation about the origin |
| B. | Rotation about an arbitrary Point |
| C. | Rotation about an arbitrary line |
| D. | Scaling about the origin |
| Answer» B. Rotation about an arbitrary Point | |
| 32. | Rotation is simply———object w.r.t origin or centre point. |
| A. | Turn |
| B. | Shift |
| C. | Compression |
| D. | Drag element |
| Answer» A. Turn | |
| 33. | A line AB with end point A (2,3) & B (7,8) is to be rotated about origin by 300 in clockwise direction. Determine the coordinates of end points S of rotated line. |
| A. | (3.232, 2.598) |
| B. | (5.232, 3.598) |
| C. | (3.232, 1.298) |
| D. | (3.232, 1.598) |
| Answer» D. (3.232, 1.598) | |
| 34. | An ellipse can also be rotated about its center coordinates by rotating |
| A. | End points |
| B. | Major and minor axes |
| C. | Only a |
| D. | None |
| Answer» B. Major and minor axes | |
| 35. | The transformation that is used to alter the size of an object is |
| A. | Scaling |
| B. | Rotation |
| C. | Translation |
| D. | Reflection |
| Answer» A. Scaling | |
| 36. | Scaling of a polygon is done by computing |
| A. | The product of (x, y) of each vertex |
| B. | (x, y) of end points |
| C. | Center coordinates |
| D. | Only a |
| Answer» D. Only a | |
| 37. | We control the location of a scaled object by choosing the position is known as……………………………. |
| A. | Pivot point |
| B. | Fixed point |
| C. | Differential scaling |
| D. | Uniform scaling |
| Answer» B. Fixed point | |
| 38. | If the scaling factors values sx and sy are assigned to the same value then……… |
| A. | Uniform rotation is produced |
| B. | Uniform scaling is produced |
| C. | Scaling cannot be done |
| D. | Scaling can be done or cannot be done |
| Answer» B. Uniform scaling is produced | |
| 39. | If the scaling factors values Sx and Sy are assigned to unequal values then |
| A. | Uniform rotation is produced |
| B. | Uniform scaling is produced |
| C. | Differential scaling is produced |
| D. | Scaling cannot be done |
| Answer» C. Differential scaling is produced | |
| 40. | The objects transformed using the equation P’=S*P should be |
| A. | Scaled |
| B. | Repositioned |
| C. | Both a and b |
| D. | Neither a nor b |
| Answer» C. Both a and b | |
| 41. | If the scaling factors values Sx and Sy < 1 then |
| A. | It reduces the size of object |
| B. | It increases the size of object |
| C. | It stunts the shape of an object |
| D. | None |
| Answer» A. It reduces the size of object | |
| 42. | If the value of Sx=1 and Sy=1 then |
| A. | Reduce the size of object |
| B. | Distort the picture |
| C. | Produce an enlargement |
| D. | No change in the size of an object |
| Answer» D. No change in the size of an object | |
| 43. | The polygons are scaled by applying the following transformation. |
| A. | X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy) |
| B. | X’=x * Sx + Xf(1+Sx) & Y’=y * Sy + Yf(1+Sy |
| C. | X’=x * Sx + Xf(1-Sx) & Y’=y * Sy – Yf(1-Sy) |
| D. | X’=x * Sx * Xf(1-Sx) & Y’=y * Sy * Yf(1-Sy) |
| Answer» A. X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy) | |
| 44. | Reflection is a special case of rotation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 45. | If two pure reflections about a line passing through the origin are applied successively the result is |
| A. | Pure rotation |
| B. | Quarter rotation |
| C. | Half rotation |
| D. | True reflection |
| Answer» A. Pure rotation | |
| 46. | What is the determinant of the pure reflection matrix? |
| A. | 1 |
| B. | 0 |
| C. | -1 |
| D. | 2 |
| Answer» C. -1 | |
| 47. | Which of the following is NOT true? Image formed by reflection through a plane mirror is |
| A. | of same size |
| B. | same orientation |
| C. | is at same distance from the mirror |
| D. | virtual |
| Answer» B. same orientation | |
| 48. | Which of the following represents shearing? |
| A. | (x, y) → (x+shx, y+shy) |
| B. | (x, y) → (ax, by) |
| C. | (x, y) → (x cos(θ)+y sin(θ), -x sin(θ)+y cos(θ)) |
| D. | (x, y) → (x+shy, y+shx) |
| Answer» D. (x, y) → (x+shy, y+shx) | |
| 49. | If a ‘3 x 3’ matrix shears in X direction, how many elements of it are ‘1’? |
| A. | 2 |
| B. | 3 |
| C. | 6 |
| D. | 5 |
| Answer» B. 3 | |
| 51. | Shearing is also termed as |
| A. | Selecting |
| B. | Sorting |
| C. | Scaling |
| D. | Skewing |
| Answer» D. Skewing | |
| 52. | Shearing and reflection are types of translation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 53. | Which of this is compulsory for 2D reflection? |
| A. | Reflection plane. |
| B. | Origin |
| C. | Reflection axis |
| D. | Co-ordinate axis. |
| Answer» C. Reflection axis | |
| 54. | Two successive translations are |
| A. | Multiplicative |
| B. | Inverse |
| C. | Subtractive |
| D. | Additive |
| Answer» D. Additive | |
| 55. | Two successive translations are commutative. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 56. | General pivot point rotation can be expressed as |
| A. | T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) |
| B. | T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) |
| C. | T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) |
| D. | T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) |
| Answer» B. T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) | |
| 57. | Which of the following is NOT correct (A, B and C are matrices) |
| A. | A∙B = B∙A |
| B. | A∙B∙C = (A∙B) ∙C = A∙ (B∙C) |
| C. | C(A+B) = C∙A + C∙B |
| D. | 1 A = A 1 |
| Answer» A. A∙B = B∙A | |
| 58. | Reflection about the line y=0, the axis, is accomplished with the transformation matrix with how many elements as ‘0’? |
| A. | 8 |
| B. | 9 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 59. | Which transformation distorts the shape of an object such that the transformed shape appears as if the object were composed of internal layers that had been caused to slide over each other? |
| A. | Rotation |
| B. | Scaling up |
| C. | Scaling down |
| D. | Shearing |
| Answer» D. Shearing | |
| 60. | Transpose of a column matrix is |
| A. | Zero matrix |
| B. | Identity matrix |
| C. | Row matrix |
| D. | Diagonal matrix |
| Answer» C. Row matrix | |
| 61. | Reversing the order in which a sequence of transformations is performed may affect the transformed position of an object. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 62. | How many minimum numbers of zeros are there in ‘3 x 3’ triangular matrix? |
| A. | 4 |
| B. | 3 |
| C. | 5 |
| D. | 6 |
| Answer» B. 3 | |
| 63. | The object space or the space in which the application model is defined is called |
| A. | World co-ordinate system |
| B. | Screen co-ordinate system |
| C. | World window |
| D. | Interface window |
| Answer» A. World co-ordinate system | |
| 64. | What is the name of the space in which the image is displayed? |
| A. | World co-ordinate system |
| B. | Screen co-ordinate system |
| C. | World window |
| D. | Interface window |
| Answer» B. Screen co-ordinate system | |
| 65. | What is the rectangle in the world defining the region that is to be displayed? |
| A. | World co-ordinate system |
| B. | Screen co-ordinate system |
| C. | World window |
| D. | Interface window |
| Answer» C. World window | |
| 66. | The window opened on the raster graphics screen in which the image will be displayed is called |
| A. | World co-ordinate system |
| B. | Screen co-ordinate system |
| C. | World window |
| D. | Interface window |
| Answer» D. Interface window | |
| 67. | The process of mapping a world window in World Coordinates to the Viewport is called Viewing transformation. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 68. | Panning is a technique in which users can change the size of the area to be viewed in order to see more detail or less detail. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 69. | Drawing of number of copies of the same image in rows and columns across the interface window so that they cover the entire window is called |
| A. | Roaming |
| B. | Panning |
| C. | Zooming |
| D. | Tiling |
| Answer» D. Tiling | |
| 70. | By changing the dimensions of the viewport, the and of the objects being displayed can be manipulated. |
| A. | Number of pixels and image quality |
| B. | X co-ordinate and Y co-ordinate |
| C. | Size and proportions |
| D. | All of these |
| Answer» C. Size and proportions | |
| 71. | Co-ordinates are ranging according to the screen resolution. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 72. | Any convenient co-ordinate system or Cartesian co-ordinates which can be used to define the picture is called |
| A. | spherical co-ordinates |
| B. | vector co-ordinates |
| C. | viewport co-ordinates |
| D. | world co-ordinates |
| Answer» D. world co-ordinates | |
| 73. | The transformation of perspective projection must include, where d is the distance between the center of projection to the projection plane. |
| A. | D |
| B. | 1/d |
| C. | -d |
| D. | -1/d |
| Answer» D. -1/d | |
| 74. | An area on a display device to which a window is mapped is called a…………. |
| A. | Window |
| B. | Viewpoint |
| C. | Pixel |
| D. | None of the above |
| Answer» B. Viewpoint | |
| 76. | A system that automates the drafting process with interactive computer graphics is called | |
| A. | Computer Aided Engineering (CAE) | |
| B. | Computer Aided Design (CAD) | |
| C. | Computer Aided Manufacturing (CAM) | |
| D. | Computer Aided Instruction (CAI) | |
| Answer» B. Computer Aided Design (CAD) | ||
| 77. | In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved? |
| A. | Orthographic |
| B. | Isometric |
| C. | Perspective |
| D. | None of the above |
| Answer» C. Perspective | |
| 78. | Coordinate of □ABCD is WCS are: lowermost corner A(2,2) & diagonal corner are C(8,6). W.r.t MCS. The coordinates of origin of WCS system are (5,4). If the axes of WCS are at 600 in CCW w.r.t. the axes of MCS. Find new vertices of point A in MCS. |
| A. | (4.268, 6.732) |
| B. | (5.268, 6.732) |
| C. | (4.268, 4.732) |
| D. | (6.268, 4.732) |
| Answer» A. (4.268, 6.732) | |
| 79. | A line AB with end points A (2, 1) & B (7, 6) is to be moved by 3 units in x-direction & 4 units in y-direction. Calculate new coordinates of points B. |
| A. | (10, 2) |
| B. | (2, 10) |
| C. | (10, 10) |
| D. | (10, 5) |
| Answer» C. (10, 10) | |
Chapter: Geometric Modeling
| 80. | QFor generating Coons patch we require |
| A. | A set of grid points on surface |
| B. | A set of control points |
| C. | Four bounding curves defining surface |
| D. | Two bounding curves and a set of grid control points |
| Answer» C. Four bounding curves defining surface | |
| 81. | In a 2-D CAD package, clockwise circular arc of radius, 5, specified from P1 (15,10) to P2 (10,15)will have its center at |
| A. | (10, 10) |
| B. | (15, 10) |
| C. | (15, 15) |
| D. | (10, 15) |
| Answer» A. (10, 10) | |
| 82. | In the following geometric modelling techniques which are not three-dimensional modelling? |
| A. | Wireframe modelling |
| B. | Drafting |
| C. | Surface modelling |
| D. | solid modelling |
| Answer» B. Drafting | |
| 83. | In the following three-dimensional modelling techniques. Which do not require much computer time and memory? |
| A. | Surface modelling |
| B. | Solid modelling |
| C. | Wireframe modelling |
| D. | All of the above |
| Answer» C. Wireframe modelling | |
| 84. | In the following geometric modelling techniques. which cannot be used for finite element analysis: |
| A. | Wireframe modelling |
| B. | Surface modelling |
| C. | Solid modeling |
| D. | none of the above |
| Answer» D. none of the above | |
| 85. | In the following geometric primitives. which is not a solid entity of CSG modelling: |
| A. | Box |
| B. | Cone |
| C. | Cylinder |
| D. | Circle |
| Answer» D. Circle | |
| 86. | Which of the following is not an analytical entity? |
| A. | Line |
| B. | Circle |
| C. | Spline |
| D. | Parabola |
| Answer» C. Spline | |
| 87. | Which of the following is not a synthetic entity? |
| A. | Hyperbola |
| B. | Bezier curve |
| C. | B-spline curve |
| D. | Cubic spline curve |
| Answer» A. Hyperbola | |
| 88. | Which one of the following does not belong to the family of conics? |
| A. | Parabola |
| B. | Ellipse |
| C. | Hyperbola |
| D. | Line |
| Answer» D. Line | |
| 89. | The number of tangents required to describe cubic splines is |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 4 |
| Answer» B. 1 | |
| 90. | The shape of Bezier curve is controlled by |
| A. | Control points |
| B. | Knots |
| C. | End points |
| D. | All the above |
| Answer» A. Control points | |
| 91. | The curve that follows a convex hull property is: |
| A. | Cubic spline |
| B. | B-spline |
| C. | Bezier curve |
| D. | Both (b) and (c) |
| Answer» B. B-spline | |
| 92. | The degree of the Bezier curve with n control points is |
| A. | n + 1 |
| B. | n – 1 |
| C. | n |
| D. | 2n |
| Answer» A. n + 1 | |
| 93. | The degree of the B-spline with varying knot vectors |
| A. | Increases with knot vectors |
| B. | Decreases with knot vectors |
| C. | Remains constant |
| D. | none of the above |
| Answer» A. Increases with knot vectors | |
| 94. | The number of non-coincidental points required to define the simplest surface are |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 95. | The tensor product technique constraints surfaces by two curves. |
| A. | 2 |
| B. | 1 |
| C. | 3 |
| D. | 4 |
| Answer» B. 1 | |
| 96. | In the bezier curve, the curve is always to first and last segments of the polygon |
| A. | normal |
| B. | parallel |
| C. | tangent |
| D. | none of the above |
| Answer» C. tangent | |
| 97. | The unit vector in the direction of the line is defined as . |
| A. | tangent vector+length of the line |
| B. | tangent vector-length of the line |
| C. | tangent vector/length of the line |
| D. | length of the line/tangent vector |
| Answer» C. tangent vector/length of the line | |
| 98. | From the following, which is an axisymmetric surface? |
| A. | Plane Surface |
| B. | Ruled Surface |
| C. | Surface of Revolution |
| D. | All of the above |
| Answer» C. Surface of Revolution | |
| 99. | curves allow local control of the curve |
| A. | Analytical |
| B. | Hermite cubic spline |
| C. | Beizer |
| D. | B-Spline |
| Answer» D. B-Spline | |
| 101. | In synthetic curves, second-order continuity yields | |
| A. | a position continuous curve | |
| B. | a slope continuous curve | |
| C. | a curvature continuous curve | |
| D. | none of the above | |
| Answer» C. a curvature continuous curve | ||
| 102. | Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» A. the major diameter | |
| 103. | When a smooth curve is approximated through the data points, then the curve is known as |
| A. | interpolant curve |
| B. | approximation curve |
| C. | pitch curve |
| D. | data curve |
| Answer» B. approximation curve | |
| 104. | In Beizer Curve, the curve follows |
| A. | the control points |
| B. | the shape of the defining polygon |
| C. | the defining points |
| D. | none of the above |
| Answer» B. the shape of the defining polygon | |
| 105. | In Beizer Curve, the flexibility of the shape would increase with |
| A. | decrease in the number of vertices |
| B. | increase in the number of vertices |
| C. | decrease in control points |
| D. | none of the above |
| Answer» B. increase in the number of vertices | |
| 106. | The number of control points can be added or subtracted in . |
| A. | Bezier curve |
| B. | B-spline curve |
| C. | Cubic spline curve |
| D. | all of the above |
| Answer» B. B-spline curve | |
| 107. | The degree of the curve is independent of the number of control points in . |
| A. | Hermite cubic spline curve |
| B. | Bezier curve |
| C. | B-spline curve |
| D. | Hyperbola |
| Answer» C. B-spline curve | |
| 108. | The is used to create a surface using curves that form closed boundaries. |
| A. | ruled Surface |
| B. | plane Surface |
| C. | coons patch |
| D. | surface of Revolution |
| Answer» C. coons patch | |
| 109. | B-rep and C-Rep are the methods of |
| A. | solid modeling |
| B. | surface modeling |
| C. | wireframe modeling |
| D. | 2D modeling |
| Answer» A. solid modeling | |
| 110. | Which kind of model can store information about geometry |
| A. | Solid model |
| B. | Surface model |
| C. | Wireframe model |
| D. | none of the above |
| Answer» A. Solid model | |
| 111. | From the following, which method is also called as the Building Block Approach? |
| A. | Cellular Decomposition |
| B. | Spatial Occupancy Enumeration |
| C. | Generalized Sweeps |
| D. | Constructive Solid Geometry |
| Answer» D. Constructive Solid Geometry | |
| 112. | Structuring and combining the primitives of the solid model in the graphics database, is achieved by the use of….. |
| A. | FEA |
| B. | transformations |
| C. | boolean operations |
| D. | none of the above |
| Answer» C. boolean operations | |
| 113. | The data representation of CSG objects is represented by |
| A. | a binary tree |
| B. | a boolean operation |
| C. | a primitive |
| D. | none of the above |
| Answer» A. a binary tree | |
| 114. | is an extension of the wireframe model with additional face information added. |
| A. | CSG |
| B. | B-rep |
| C. | Loft |
| D. | none of the above |
| Answer» B. B-rep | |
| 115. | For 3D modeling of automobile body styling, which of the following is a preferred technique? |
| A. | Constructive Solid Geometry |
| B. | Pure Primitive Instancing |
| C. | Boundary Representation |
| D. | Spatial Occupancy Enumeration |
| Answer» C. Boundary Representation | |
| 116. | Which of the following uses a number of two-dimensional profiles for generating a three-dimensional object? |
| A. | Tweaking |
| B. | Lofting |
| C. | Filleting |
| D. | none of the above |
| Answer» B. Lofting | |
| 117. | To create a hollow part, which of the following command would be most efficient? |
| A. | Extrude |
| B. | Sweep |
| C. | Shell |
| D. | Revolve |
| Answer» C. Shell | |
| 118. | The curve is defined as the locus of a point moving with _ degree of freedom |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» B. 1 | |
| 119. | Write parametric equation of line having end points P1(3,5,8) and P2 (6,4,3). |
| A. | [3 5 8]+u[3 -1 -5] |
| B. | [3 5 8]+u[3 1 5] |
| C. | [3 8 5]+u[3 -1 -5] |
| D. | [3 5 8]+u[-3 1 5] |
| Answer» A. [3 5 8]+u[3 -1 -5] | |
| 120. | Find the tangent vector of line having end points P1(3,5,8) and P2 (6,4,3) |
| A. | 3i+j-5k |
| B. | 3i-j-5k |
| C. | 3i-j+5k |
| D. | -3i-j-5k |
| Answer» B. 3i-j-5k | |
| 121. | Find coordinates of points on line having end points P1(3,5,8) and P2 (6,4,3) at u=0.25 |
| A. | [3.75 4.25 6.25] |
| B. | [3.25 4.25 6.25] |
| C. | [3.75 4.75 6.75] |
| D. | [4.25 3.75 6.25] |
| Answer» C. [3.75 4.75 6.75] | |
| 122. | Two lines are parallel when |
| A. | P1 X P2=0 |
| B. | P1 . P2=0 |
| C. | P1 = P2 |
| D. | P1+ P2=0 |
| Answer» A. P1 X P2=0 | |
| 123. | Two lines L1 and L2 having Parametric equations are P1=[3 4 7]+u[2 2 -6] and P2=[1 5 -2]+u[1 4 2]. Tangent vector for line L1 |
| A. | 2i+2j-6k |
| B. | 2i+2j+6k |
| C. | 2i-2j-6k |
| D. | 6-2j-2k |
| Answer» A. 2i+2j-6k | |
| 124. | For Q 45, Tangent vector for line L2 |
| A. | i+4j-k |
| B. | 2i+4j+k |
| C. | i-4j-2k |
| D. | i+4j+2k |
| Answer» D. i+4j+2k | |
| 126. | Parametric equation for circle | |
| A. | X=x+Rcosu; Y=y+Rsinu; Z=z | |
| B. | X=Rcosu; Y=Rsinu; Z=z | |
| C. | X=x+Rsinu; Y=y+Rcosu; Z=z | |
| D. | X=Rsinu; Y=y+Rcosu; Z=z | |
| Answer» A. X=x+Rcosu; Y=y+Rsinu; Z=z | ||
| 127. | Center point of circle |
| A. | [x1+x2]/2; [y1+y2]/2; [z1+z2]/2 |
| B. | [x1-x2]/2; [y1-y2]/2; [z1-z2]/2 |
| C. | [x1-x2]; [y1-y2]; [z1-z2] |
| D. | [x2-x1]; [y2-y1]; [z2-z1] |
| Answer» A. [x1+x2]/2; [y1+y2]/2; [z1+z2]/2 | |
| 128. | A circle is represented by center point [5,5] and radius 6 units. Find the parametric equation of circle and determine the various points on circle in first quadrant if increment in angle by 45o |
| A. | 9.24,9.24 |
| B. | 9.42,9.42 |
| C. | 9,9 |
| D. | 11,5 |
| Answer» A. 9.24,9.24 | |
| 129. | A circle is passing through two end points A[6,4] and B[10,10]. Find center point of circle |
| A. | 7,8 |
| B. | 8,8 |
| C. | 8,7 |
| D. | 7,7 |
| Answer» C. 8,7 | |
| 130. | For Q 51, find radius of circle |
| A. | 3 |
| B. | 3.6 |
| C. | 4 |
| D. | 3.5 |
| Answer» B. 3.6 | |
| 131. | For Q 51, find coordinates of point on circle at u=0 |
| A. | 11.6, 7 |
| B. | 7, 11 |
| C. | 11, 7 |
| D. | 11.5, 7.5 |
| Answer» A. 11.6, 7 | |
| 132. | Find parametric equation for X-coordinates of hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | -5u3+8u2+u+1 |
| B. | 5u3+8u2+u+1 |
| C. | 8u3-5u2-u+1 |
| D. | 8u3+5u2+u+1 |
| Answer» A. -5u3+8u2+u+1 | |
| 133. | Find parametric equation for Y-coordinates of Hermite cubic spline curve having end points P0[4,4]; P1[8,5] |
| A. | 2u3-3u2+2u+4 |
| B. | 3u3-2u2-2u-4 |
| C. | 2u3-3u2-2u-4 |
| D. | 2u3+3u2+2u+4 |
| Answer» A. 2u3-3u2+2u+4 | |
| 134. | C0 continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» C. Common point | |
| 135. | C‘ continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» B. Common curvature | |
| 136. | C” continuity refers to |
| A. | Common tangent |
| B. | Common curvature |
| C. | Common point |
| D. | Common normal |
| Answer» A. Common tangent | |
| 137. | Which of the following is not a method to describe a curve mathematically? |
| A. | Explicit form |
| B. | Laplace form |
| C. | Implicit form |
| D. | Parametric form |
| Answer» B. Laplace form | |
| 138. | When the curve passes through all the data points, then the curve is known as |
| A. | approximation curve |
| B. | pitch curve |
| C. | data curve |
| D. | interpolant curve |
| Answer» D. interpolant curve | |
| 139. | When a smooth curve is approximated through the data points, then the curve is known as |
| A. | approximation curve |
| B. | pitch curve |
| C. | data curve |
| D. | interpolant curve |
| Answer» A. approximation curve | |
| 140. | Synthetic curve pass through defined data points and thus can be represented by |
| A. | polynomial equations |
| B. | exponential equations |
| C. | partial differential equations |
| D. | differential equations |
| Answer» A. polynomial equations | |
| 141. | Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to |
| A. | the major diameter |
| B. | the minor diameter |
| C. | semi major diameter |
| D. | semi-minor diameter |
| Answer» A. the major diameter | |
| 142. | The parabola is defined mathematically as a curve generated by a point that moves such that its distance from the focus is always__________the distance to the directrix |
| A. | larger than |
| B. | smaller than |
| C. | equal to |
| D. | none of the above |
| Answer» C. equal to | |
| 143. | In synthetic curves, zero-order continuity yields |
| A. | a position continuous curve |
| B. | a slope continuous curve |
| C. | a curvature continuous curve |
| D. | none of the above |
| Answer» A. a position continuous curve | |
| 144. | In synthetic curves, first-order continuity yields |
| A. | a position continuous curve |
| B. | a slope continuous curve |
| C. | a curvature continuous curve |
| D. | none of the above |
| Answer» B. a slope continuous curve | |
| 145. | The B-spline curve has a |
| A. | first-order continuity |
| B. | second-order continuity |
| C. | zero-order continuity |
| D. | none of the above |
| Answer» B. second-order continuity | |
| 146. | To determine the coefficients of the equation – two end-points and the two tangent vectors. This statement is true for which of the following? |
| A. | B-spline curve |
| B. | Hermite Cubic Spline Curve |
| C. | Beizer curve |
| D. | none of the above |
| Answer» B. Hermite Cubic Spline Curve | |
| 147. | The Bezier curve is smoother than the Hermite cubic spline because it has _________ order derivatives. |
| A. | lower |
| B. | higher |
| C. | lower and higher both |
| D. | none of the above |
| Answer» B. higher | |
| 148. | In the bezier curve, the curve is always________to first and last segments of the polygon |
| A. | normal |
| B. | parallel |
| C. | tangent |
| D. | none of the above |
| Answer» C. tangent | |
| 149. | ________curves allow local control of the curve. |
| A. | Analytical |
| B. | Hermite cubic spline |
| C. | Beizer |
| D. | B-Spline |
| Answer» D. B-Spline | |
| 151. | In Beizer Curve, the flexibility of the shape would increase with _______ of the polygon. |
| A. | decrease in the number of vertices |
| B. | increase in the number of vertices |
| C. | decrease in control points |
| D. | none of the above |
| Answer» B. increase in the number of vertices | |
| 152. | The degree of the curve is independent of the number of control points in _____ |
| A. | Hermite cubic spline curve |
| B. | Bezier curve |
| C. | B-spline curve |
| D. | Hyperbola |
| Answer» C. B-spline curve | |
| 153. | In modeling of a tabulated cylinder, the plane of the curve is _______ |
| A. | along the curve |
| B. | normal to the curve |
| C. | along the axis of the cylinder |
| D. | perpendicular to the axis of the cylinder |
| Answer» D. perpendicular to the axis of the cylinder | |
| 154. | The ___________ is used to create a surface using curves that form closed boundaries |
| A. | ruled Surface |
| B. | plane Surface |
| C. | coons patch |
| D. | surface of Revolution |
| Answer» C. coons patch | |
| 155. | ________ command gives an array of object in 3D modeling |
| A. | Extrude |
| B. | Revolve |
| C. | Pattern |
| D. | All of the above |
| Answer» C. Pattern | |
| 156. | To create a hollow part, which of the following command would be most efficient |
| A. | Extrude |
| B. | Sweep |
| C. | Shell |
| D. | Revolve |
| Answer» C. Shell | |
| 157. | A cylinder can be created by drawing a rectangular shape using the ________ tool. |
| A. | revolve |
| B. | sweep |
| C. | extrude |
| D. | all of the above |
| Answer» A. revolve | |
| 158. | For 3D modeling of automobile body styling, which of the following is a preferred technique |
| A. | Constructive Solid Geometry |
| B. | Pure Primitive Instancing |
| C. | Boundary Representation |
| D. | Spatial Occupancy Enumeration |
| Answer» C. Boundary Representation | |
Chapter: FEA
| 159. | What is the full form of FEA |
| A. | Fracture Element Analysis |
| B. | Finite Element Analysis |
| C. | Future Electronic Analysis |
| D. | None of the above |
| Answer» B. Finite Element Analysis | |
| 160. | From the following, which type of element is not two dimensional? |
| A. | Tetrahedron |
| B. | Quadrilateral |
| C. | Parallelogram |
| D. | Rectangle |
| Answer» A. Tetrahedron | |
| 161. | For truss analysis, which type of elements is used? |
| A. | Triangle |
| B. | Parallelogram |
| C. | Rectangle |
| D. | Bar |
| Answer» D. Bar | |
| 162. | To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that are called |
| A. | static elements |
| B. | dynamic elements |
| C. | infinite elements |
| D. | finite elements |
| Answer» D. finite elements | |
| 163. | The art of subdividing the structure into a convenient number of smaller elements is known as |
| A. | discretization |
| B. | assemblage |
| C. | continuum |
| D. | traction |
| Answer» A. discretization | |
| 164. | The sum of the shape function is equal to |
| A. | 0 |
| B. | 0.5 |
| C. | 1 |
| D. | 2 |
| Answer» C. 1 | |
| 165. | A triangular plane stress element has how many degrees of freedom? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 166. | Number of displacement polynomials used for an element depends on . |
| A. | nature of element |
| B. | type of an element |
| C. | degrees of freedom |
| D. | nodes |
| Answer» C. degrees of freedom | |
| 167. | On gathering stiffness and loads, the system of equations is given by |
| A. | KQ=F |
| B. | KQ≠F |
| C. | K=QF |
| D. | K≠QF |
| Answer» A. KQ=F | |
| 168. | The finite element method is mostly used in the field of |
| A. | structural mechanics |
| B. | classical mechanics |
| C. | applied mechanics |
| D. | engineering mechanics |
| Answer» D. engineering mechanics | |
| 169. | In FEA, the sub domains are called as . |
| A. | particles |
| B. | molecules |
| C. | elements |
| D. | none |
| Answer» C. elements | |
| 170. | The numbers of node for 1 D element are |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» B. 2 | |
| 171. | Finite element analysis deals with . |
| A. | approximate numerical solution |
| B. | non-boundary value problems |
| C. | Laplace equations |
| D. | All of the above |
| Answer» A. approximate numerical solution | |
| 172. | Stiffness matrix depends on |
| A. | material |
| B. | geometry |
| C. | both material and geometry |
| D. | none of the above |
| Answer» C. both material and geometry | |
| 173. | Example of 2-D Element is . |
| A. | bar |
| B. | triangle |
| C. | hexahedron |
| D. | tetrahedron |
| Answer» B. triangle | |
| 174. | For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed is having an order of |
| A. | 2*2 |
| B. | 3*3 |
| C. | 4*4 |
| D. | 6*6 |
| Answer» B. 3*3 | |
| 176. | The nature of loading at various locations and other surfaces conditions called |
| A. | friction |
| B. | traction |
| C. | boundary condition |
| D. | surfacing |
| Answer» C. boundary condition | |
| 177. | The truss element can resist only |
| A. | surface force |
| B. | axial force |
| C. | point load |
| D. | none of the above |
| Answer» B. axial force | |
| 178. | The truss element can deform only in the |
| A. | vertical direction |
| B. | horizontal direction |
| C. | inclined direction |
| D. | axial direction |
| Answer» D. axial direction | |
| 179. | Example for one – Dimensional element is . |
| A. | triangular element |
| B. | brick element |
| C. | truss element |
| D. | axisymmetric element |
| Answer» C. truss element | |
| 180. | The determinant of an element stiffness matrix is always |
| A. | 3 |
| B. | 2 |
| C. | 1 |
| D. | 0 |
| Answer» D. 0 | |
| 181. | How many nodes are there in a 3-D brick element? |
| A. | 3 |
| B. | 6 |
| C. | 8 |
| D. | 9 |
| Answer» C. 8 | |
| 182. | From below, choose the condition for the axisymmetric element. |
| A. | Symmetric about axis |
| B. | Boundary conditions are symmetric about an axis |
| C. | Loading conditions are symmetric about an axis |
| D. | All the above |
| Answer» D. All the above | |
| 183. | Axis-Symmetric element is Element |
| A. | 1D |
| B. | 2D |
| C. | 3D |
| D. | 4D |
| Answer» B. 2D | |
| 184. | is/are the phase/s of finite element method |
| A. | Pre-processing |
| B. | Solution |
| C. | Post Processing |
| D. | None |
| Answer» C. Post Processing | |
| 185. | The minimum number of dimensions are required to define the position of a point in space is . |
| A. | 3 |
| B. | 4 |
| C. | 1 |
| D. | 2 |
| Answer» A. 3 | |
| 186. | The finite element methods can be applied in ———areas. |
| A. | thermal |
| B. | soil and rock mechanics |
| C. | vibration |
| D. | all of the above |
| Answer» D. all of the above | |
| 187. | If the structure is more complex in order to simplify the model, we need to subdivide the structure into substructures. These substructures are termed as . |
| A. | elements |
| B. | modules |
| C. | links |
| D. | models |
| Answer» B. modules | |
| 188. | Which of the following is not a method for calculation of the stiffness matrix? |
| A. | The minimum potential energy principle |
| B. | Galerkin’s principle |
| C. | Weighted residual method |
| D. | Inverse matrix method |
| Answer» D. Inverse matrix method | |
| 189. | is defined as the ratio of the largest dimension of the element to the smallest dimension. |
| A. | Element depth ratio |
| B. | Mode shape ratio |
| C. | Aspect ratio |
| D. | None of the above |
| Answer» C. Aspect ratio | |
| 190. | are used to express the geometry or shape of the element |
| A. | Mode shapes |
| B. | Shape functions |
| C. | Natural curves |
| D. | None of the above |
| Answer» B. Shape functions | |
| 191. | When a thin plate is subjected to loading in its own plane only, the condition is called _ |
| A. | plane stress |
| B. | plane strain |
| C. | zero stress |
| D. | zero strain |
| Answer» A. plane stress | |
| 192. | The characteristic of the shape function is |
| A. | the shape function has a unit value at one nodal point and zero value at the other nodes |
| B. | the sum of the shape function is equal to one |
| C. | both a & b |
| D. | None of the above |
| Answer» C. both a & b | |
| 193. | The points in the entire structure are defined using the coordinates system is known as |
| A. | local coordinates system |
| B. | natural coordinates system |
| C. | global coordinate system |
| D. | none of the above |
| Answer» C. global coordinate system | |
| 194. | The applications of the Finite Element Method in two-dimensional analyses are . |
| A. | stretching of plates |
| B. | gravity of dams |
| C. | axisymmetric shells |
| D. | all of the above |
| Answer» C. axisymmetric shells | |
| 195. | If the body is in a state of equilibrium then the energy is minimum. This statement is considered in . |
| A. | inverse matrix method |
| B. | weighted residual method |
| C. | Galerkin’s principle |
| D. | the minimum potential energy principle |
| Answer» D. the minimum potential energy principle | |
| 196. | Which of the following is true for the stiffness matrix (K)? |
| A. | K is a banded matrix |
| B. | K is un-symmetric |
| C. | K is an un-banded matrix |
| D. | none of the above |
| Answer» A. K is a banded matrix | |
| 197. | The actual thickness of plane strain element is . |
| A. | very large |
| B. | very small |
| C. | assumed by software |
| D. | any of the above |
| Answer» A. very large | |
| 198. | Which of the following is not an FEA package? |
| A. | ANSYS |
| B. | Nastran |
| C. | Abaqus |
| D. | AutoCAD |
| Answer» D. AutoCAD | |
| 199. | Which of the following module of FEA is used to determine natural frequency? |
| A. | Static analysis |
| B. | Thermal analysis |
| C. | Modal analysis |
| D. | All of the above |
| Answer» C. Modal analysis | |
| 201. | In FEA of a fluid mechanics problem, we need to find . |
| A. | stress distribution |
| B. | heat flux distribution |
| C. | pressure distribution |
| D. | all of the above |
| Answer» C. pressure distribution | |
| 202. | Crack propagation problems come under category. |
| A. | steady-state problems |
| B. | eigenvalue problems |
| C. | transient problems |
| D. | any of the above |
| Answer» C. transient problems | |
| 203. | In penalty approach, rigid support is considered as a spring having stiffness. |
| A. | zero |
| B. | very small |
| C. | very large |
| D. | infinite |
| Answer» D. infinite | |
| 204. | How many nodes are there in a tetrahedron element? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» B. 4 | |
| 205. | How many nodes are there in a hexahedron element? |
| A. | 4 |
| B. | 6 |
| C. | 8 |
| D. | 10 |
| Answer» C. 8 | |
| 206. | How many nodes are there in a tetrahedron with curved sides element? |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» C. 10 | |
| 207. | If the size of the elements is small, the final solution is expected to be accurate. |
| A. | more |
| B. | less |
| C. | depends on other factors |
| D. | can’t say |
| Answer» A. more | |
| 208. | In truss analysis, the reactions can be found by using the equation . |
| A. | R=KQ+F |
| B. | R=KQ-F |
| C. | R=K+QF |
| D. | R=K-QF |
| Answer» B. R=KQ-F | |
Chapter: CAM
| 209. | CAD/CAM is the relationship between |
| A. | science and engineering |
| B. | manufacturing and marketing |
| C. | design and manufacturing |
| D. | design and marketing |
| Answer» C. design and manufacturing | |
| 210. | Which two disciplines are tied by a common database? |
| A. | documentation and geometric modeling |
| B. | CAD and CAM |
| C. | drafting and documentation |
| D. | none of the mentioned |
| Answer» B. CAD and CAM | |
| 211. | The term that is used for geometric modelling like solid modelling, wire frame modelling and drafting is known as |
| A. | software package |
| B. | operating system |
| C. | application software |
| D. | none of the mentioned |
| Answer» A. software package | |
| 212. | The software that is used to control the computer’s work flow, organize its data and perform housekeeping functions is known as |
| A. | operating software |
| B. | graphics software |
| C. | application software |
| D. | programming software |
| Answer» A. operating software | |
| 213. | During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 the type of tool motion will be |
| A. | circular Interpolation – clockwise |
| B. | circular Interpolation – counter clockwise |
| C. | linear Interpolation |
| D. | rapid feed |
| Answer» A. circular Interpolation – clockwise | |
| 214. | n an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) along a circular path with centre at (5, 2). Before starting the operation, the tool is at (5, 4). The G and N codes for this motion are |
| A. | N010 GO3 X7.0 Y2.0 I5.0 J2.0 |
| B. | N010 GO2 X7.0 Y2.0 I5.0 J2.0 |
| C. | N010 GO1 X7.0 Y2.0 I5.0 J2.0 |
| D. | N010 GOO X7.0 Y2.0 I5.0 J2.0 |
| Answer» B. N010 GO2 X7.0 Y2.0 I5.0 J2.0 | |
| 215. | The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The centre of the arc is at (10, 5). Which one of the following NC tool path command performs the above mentioned operation? |
| A. | N010 GO2 X10 Y10 X5 Y5 R5 |
| B. | N010 GO3 X10 Y10 X5 Y5 R5 |
| C. | N010 GO1 X5 Y5 X10 Y10 R5 |
| D. | N010 GO2 X5 Y5 X10 Y10 R5 |
| Answer» A. N010 GO2 X10 Y10 X5 Y5 R5 | |
| 216. | Match the following: NC code Definition P. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation |
| A. | P-2, Q-3, R-4, S-1 |
| B. | P-3, Q-4, R-1, S-2 |
| C. | P-3, Q-4, R-2, S-1 |
| D. | P-4, Q-3, R-2, S-1 |
| Answer» C. P-3, Q-4, R-2, S-1 | |
| 217. | In a CNC program block, N02 GO2 G91 X40 Z40……, GO2 and G91 refer to |
| A. | circular interpolation in counter clockwise direction and incremental dimension |
| B. | circular interpolation in counter clockwise direction and absolute dimension |
| C. | circular interpolation in clockwise direction and incremental dimension |
| D. | circular interpolation in clockwise direction and absolute dimension |
| Answer» C. circular interpolation in clockwise direction and incremental dimension | |
| 218. | Numerical control |
| A. | applies only to milling machines |
| B. | is a method for producing exact number of parts per hour |
| C. | is a method for controlling by means of set of instructions |
| D. | None of the mentioned |
| Answer» C. is a method for controlling by means of set of instructions | |
| 219. | Computer will perform the data processing functions in |
| A. | NC |
| B. | CNC |
| C. | DNC |
| D. | None of the mentioned |
| Answer» B. CNC | |
| 220. | Control loop unit of M.C.U is always |
| A. | a hardware unit |
| B. | a software unit |
| C. | a control unit |
| D. | none of the mentioned |
| Answer» A. a hardware unit | |
| 221. | The repeatability of NC machine depends on |
| A. | control loop errors |
| B. | mechanical errors |
| C. | electrical errors |
| D. | none of the mentioned |
| Answer» B. mechanical errors | |
| 222. | Rotation about Z-axis is called…………. |
| A. | a-axis |
| B. | b-axis |
| C. | c-axis |
| D. | none of the mentioned |
| Answer» C. c-axis | |
| 223. | Rotation of spindle is designated by one of the following axis: |
| A. | a-axis |
| B. | b-axis |
| C. | c-axis |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 224. | he linking of computer with a communication system is called……….. |
| A. | networking |
| B. | pairing |
| C. | interlocking |
| D. | assembling |
| Answer» A. networking | |
| 226. | The process of copying data from a memory location is called | |
| A. | reading | |
| B. | writing | |
| C. | controlling | |
| D. | hand shaking | |
| Answer» A. reading | ||
| 227. | CNC machining centres do not include operations like |
| A. | milling |
| B. | boring |
| C. | welding |
| D. | tapping |
| Answer» C. welding | |
| 228. | Feed is measured in units of |
| A. | length/revolution |
| B. | degree/revolution |
| C. | length |
| D. | velocity |
| Answer» A. length/revolution | |
| 229. | he depth that the tool is plunged into the surface is called as |
| A. | feed |
| B. | depth of cut |
| C. | depth of tool |
| D. | working depth |
| Answer» B. depth of cut | |
| 230. | In CNC systems multiple microprocessors and programmable logic controllers work |
| A. | in parallel |
| B. | in series |
| C. | one after the other |
| D. | for 80% of the total machining time |
| Answer» A. in parallel | |
| 231. | Which of the following is not the advantage of CNC machines? |
| A. | Higher flexibility |
| B. | Improved quality |
| C. | Reduced scrap rate |
| D. | Improved strength of the components |
| Answer» D. Improved strength of the components | |
| 232. | In how many ways CNC machine tool systems can be classified? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 233. | Point-to-point systems are used for |
| A. | reaming |
| B. | parting |
| C. | grooving |
| D. | facing |
| Answer» A. reaming | |
| 234. | In part programming, interpolation is used for obtaining trajectory. |
| A. | helicoidal |
| B. | pentagonal |
| C. | triangular |
| D. | zig-zag |
| Answer» A. helicoidal | |
| 235. | For CNC machining skilled part programmers are needed. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 236. | An absolute NC system is one in which all position coordinates are referred to one fixed origin called the zero point. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 237. | In , the coordinates are mentioned in the program with respect to one reference point |
| A. | Incremental System |
| B. | Absolute System |
| C. | Datum System |
| D. | Screen Coordinates System |
| Answer» B. Absolute System | |
| 238. | ……… is a group of words or coded instruction for the NC/CNC system to execute a particular movement. |
| A. | Sequence |
| B. | Address |
| C. | Code |
| D. | Block |
| Answer» D. Block | |
| 239. | Each coded instruction in a set of instructions is called as…… |
| A. | Words |
| B. | Alphabet |
| C. | Numbers |
| D. | Format |
| Answer» A. Words | |
| 240. | In , the coordinates are mentioned in the program with respect to one Previous point. |
| A. | Incremental System |
| B. | Absolute System |
| C. | Datum System |
| D. | Screen Coordinates System |
| Answer» A. Incremental System | |
| 241. | G00 Preparatory code is used for |
| A. | Rapid Travel Execution |
| B. | Rapid Travel Positioning |
| C. | Rapid Travel sequencing |
| D. | Rapid clockwise interpolation |
| Answer» B. Rapid Travel Positioning | |
| 242. | In a CNC program block, N05 GO1 G91 G33 X20 Z-40……, G33 refer to |
| A. | Peck Drilling |
| B. | Counter Boring |
| C. | Thread Cutting |
| D. | Grooving |
| Answer» C. Thread Cutting | |
| 243. | In CNC Program M03 is refer to…… |
| A. | Spindle ON in Clockwise rotation |
| B. | Spindle ON in Counter Clockwise rotation |
| C. | Spindle OFF in Clockwise rotation |
| D. | Spindle OFF in Counter Clockwise rotation |
| Answer» A. Spindle ON in Clockwise rotation | |
| 244. | In CNC Program M98 is refer to…… |
| A. | CANCEL Subroutine |
| B. | Call Sub-Program |
| C. | Call Subroutine |
| D. | CANCEL Sub-Program |
| Answer» B. Call Sub-Program | |
| 245. | In a CNC program block, N05 GO1 G91 G33 X20 Z-40 K5……, K refer to |
| A. | Depth of cut |
| B. | Pitch |
| C. | Multiple Threading Cycle |
| D. | Feed |
| Answer» B. Pitch | |
| 246. | A CNC Lathe is usually a machine tool with Z axes is….. |
| A. | Line Joining origin and vertical movement |
| B. | Line perpendicular to Y axis |
| C. | Both A & B |
| D. | Line Joining Chuck centre & tail stock centre |
| Answer» D. Line Joining Chuck centre & tail stock centre | |
| 247. | B rotational axis is rotation about Axis. |
| A. | X |
| B. | Y |
| C. | Z |
| D. | C |
| Answer» A. X | |
| 248. | Secondary Linear Axes U,V & W are ……… to X,Y & Z-axis. |
| A. | Perpendicular |
| B. | Parallel |
| C. | Rotational |
| D. | All of the above |
| Answer» B. Parallel | |
| 249. | ……… are also called as parametric subroutines |
| A. | Micro |
| B. | Macro |
| C. | Sub Macro |
| D. | Sub Micro |
| Answer» B. Macro | |
| 251. | Incremental dimension in circular interpolation in X-axis is denoted by |
| A. | J |
| B. | I |
| C. | K |
| D. | None of the above |
| Answer» B. I | |
| 252. | Repetitive CNC machine operations conveniently performing and execute with one command instead of programming of series of individual move called ….. |
| A. | Common Cycle |
| B. | Incremental Programming |
| C. | Canned Cycle |
| D. | None of the above |
| Answer» C. Canned Cycle | |
| 253. | In CNC programming …….. is commonly used canned cycle for Stock removal cycle |
| A. | G71 |
| B. | G72 |
| C. | G73 |
| D. | G74 |
| Answer» D. G74 | |
| 254. | ……… is the origin of the coordinate system which is defined by manufacturer they cannot be changed |
| A. | Blocking Point |
| B. | machine Zero Point |
| C. | Start Point |
| D. | Program Zero point |
| Answer» B. machine Zero Point | |
| 255. | To indicate the position of the workpiece ly & easily machine zero pint should be displaced to another point on the workpiece called… |
| A. | Workpiece zero Point |
| B. | machine Zero Point |
| C. | Start Point |
| D. | Program Zero point |
| Answer» A. Workpiece zero Point | |
| 256. | XY Plane Selection in CNC machining is done by….. |
| A. | G16 |
| B. | G17 |
| C. | G18 |
| D. | G19 |
| Answer» B. G17 | |
| 257. | The distance of a given tool tip from the surface of workpiece is known as….. |
| A. | Tool length |
| B. | Tool length offset H |
| C. | Cutter radius |
| D. | Compensation |
| Answer» B. Tool length offset H | |
| 258. | In CNC machining tool radius compensation turning the left mode ON programming contour done by |
| A. | G40 |
| B. | G41 |
| C. | G42 |
| D. | G43 |
| Answer» B. G41 | |
| 259. | Maximum spindle speed limitation code in CNC Machine |
| A. | G90 |
| B. | G91 |
| C. | G92 |
| D. | G93 |
| Answer» C. G92 | |
| 260. | Which of the following code is used to return to a reference point? |
| A. | G23 |
| B. | G28 |
| C. | G14 |
| D. | G19 |
| Answer» B. G28 | |
| 261. | The following code will produce dwell for a specified time… |
| A. | G18 |
| B. | G65 |
| C. | G45 |
| D. | G04 |
| Answer» D. G04 | |
| 262. | Which of the following code will give point to point movement? |
| A. | G00 |
| B. | G01 |
| C. | G56 |
| D. | G94 |
| Answer» A. G00 | |
| 263. | Which rule implement for axes Nomenclature? |
| A. | Left-hand rule |
| B. | Right-Hand Rule |
| C. | Thumb Rule |
| D. | None of the above |
| Answer» B. Right-Hand Rule | |
| 264. | Automatic tool change in CNC Machine code |
| A. | M05 |
| B. | M06 |
| C. | M07 |
| D. | M09 |
| Answer» B. M06 | |
| 265. | Full form of MCU is………… |
| A. | Machine computer unit |
| B. | Machine control universal |
| C. | Machine control unit |
| D. | None of the above |
| Answer» C. Machine control unit | |
| 266. | The machine tool, in which calculation and setting of the operating conditions like depth of cut, feed, speed are done during the machining by the control system itself, is called |
| A. | Computer Numerical Control System |
| B. | Direct Numerical Control System |
| C. | Machining Center System |
| D. | Adaptive Control System |
| Answer» D. Adaptive Control System | |
| 267. | In which machine we get feedback? |
| A. | Lathe machine |
| B. | NC machine |
| C. | CNC machine |
| D. | Milling machine |
| Answer» C. CNC machine | |
| 268. | Which machine’s spindle is used to horizontal work? |
| A. | UMC |
| B. | VMC |
| C. | HMC |
| D. | DNC |
| Answer» C. HMC | |
| 269. | What is the full form of ATC? |
| A. | Automatic tool changer |
| B. | Arranged tool changer |
| C. | Automatic tool controller |
| D. | Arranged tool controller |
| Answer» A. Automatic tool changer | |
| 270. | In which system we get feedback? |
| A. | Open-loop system |
| B. | Machine control system |
| C. | Closed-loop system |
| D. | None of the above |
| Answer» C. Closed-loop system | |
| 271. | How many maximum tools can ATC hold? |
| A. | 60 |
| B. | 80 |
| C. | 90 |
| D. | 100 |
| Answer» B. 80 | |
| 272. | In the CNC machine which device used to hold the workpiece? |
| A. | Automatic pallet changer |
| B. | Automatic work part positioner |
| C. | A & B both |
| D. | None of the above |
| Answer» C. A & B both | |
| 273. | In a CAD package, mirror image of a 2D point P (5, 10) is to be obtained about a line which passes through the origin and makes an angle of 45° counterclockwise with the X-axis. The coordinates of the transformed point will be |
| A. | (7.5, 5) |
| B. | (10, 5) |
| C. | (7.5, -5) |
| D. | (10, -5) |
| Answer» B. (10, 5) | |
| 274. | NC contouring is an example of |
| A. | Continuous path positioning |
| B. | Point-to-point positioning |
| C. | Absolute positioning |
| D. | Incremental positioning |
| Answer» A. Continuous path positioning | |
| 276. | In finish machining of an island on a casting with CNC milling machine, an end mill with 10 mm diameter is employed. The corner points of the island are represented by (0, 0), (0, 30), (50, 30) and (50, 0). By applying cutter radius right compensation, the trajectory of the cutter will be |
| A. | (-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5) |
| B. | (0,-5), (55,-5), (55, 35), (-5, 35), (-5,-5) |
| C. | (5, 5), (5, 25), (45, 25), (45, 5), (5, 5) |
| D. | (5, 5), (45, 5), (45, 25), (5, 25), (5, 5) |
| Answer» A. (-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5) | |
| 277. | The lost motion in CNC machine tool is on account of |
| A. | Backlash in gearing |
| B. | Wind-up of drive shafts |
| C. | Deflection of machine tool members |
| D. | All the above |
| Answer» A. Backlash in gearing | |
Chapter: Advanced Manufacturing Method
| 278. | From following, the alternative name for RP is ________ |
| A. | Additive Manufacturing |
| B. | Layer Manufacturing |
| C. | Direct CAD Manufacturing |
| D. | All of the above |
| Answer» D. All of the above | |
| 279. | Input of RP data is ______ |
| A. | CAM data |
| B. | CAPP data |
| C. | CAD data |
| D. | All of the above |
| Answer» C. CAD data | |
| 280. | In the ___________ process, one starts with a single block of solid material larger than the final size of the desired object and material is removed until the desired shape is reached. |
| A. | Subtractive process |
| B. | Additive process |
| C. | Formative process |
| D. | All of above |
| Answer» A. Subtractive process | |
| 281. | __________ is one where mechanical forces or restricting forms are applied on a material so as to form it into the desired shape |
| A. | Subtractive process |
| B. | Additive process |
| C. | Formative process |
| D. | All of above |
| Answer» C. Formative process | |
| 282. | Which of the following is not subtractive process? |
| A. | Milling |
| B. | Stereo-lithography |
| C. | Sawing |
| D. | EDM |
| Answer» B. Stereo-lithography | |
| 283. | Which of the following process is not formative process? |
| A. | Bending |
| B. | Plastic injection molding |
| C. | Selective Laser Sintering |
| D. | Forging |
| Answer» C. Selective Laser Sintering | |
| 284. | Choose the correct sequence to generate prototype |
| A. | 3D CAD data – CAD solid model – STL file – RP prototype |
| B. | CAD solid model – 3D CAD data – RP prototype – STL file |
| C. | STL file – 3D CAD data – CAD solid model – RP prototype |
| D. | 3D CAD data – STL file – CAD solid model – RP prototype |
| Answer» A. 3D CAD data – CAD solid model – STL file – RP prototype | |
| 285. | Which of the following can not be the input of CAD solid model? |
| A. | Physical mockup |
| B. | 2D surface data |
| C. | Tooling |
| D. | 3D CAD data |
| Answer» C. Tooling | |
| 286. | Full form of STL is _____ |
| A. | Straight-lithography |
| B. | Streto-lithography |
| C. | Stereo-lithography |
| D. | Straight-lipsography |
| Answer» C. Stereo-lithography | |
| 287. | For rapid prototyping 3D CAD model should be converted into______file |
| A. | SGC |
| B. | SLA |
| C. | STL |
| D. | SLS |
| Answer» C. STL | |
| 288. | Process of converting STL file model in to layers is called________in RP |
| A. | chopping |
| B. | slicing |
| C. | cutting |
| D. | trimming |
| Answer» B. slicing | |
| 289. | Support structures are required for ______ |
| A. | thin portions |
| B. | thick portions |
| C. | overhanging portions |
| D. | all of the above |
| Answer» C. overhanging portions | |
| 290. | The STL files translate the part geometry from a CAD system to________ |
| A. | CNC machine |
| B. | VMC machine |
| C. | RP machine |
| D. | CAPP machine |
| Answer» C. RP machine | |
| 291. | Slicing a part is easier in ______ |
| A. | B-rep method |
| B. | STL method |
| C. | CSG method |
| D. | PRT method |
| Answer» B. STL method | |
| 292. | STL file converts curved surfaces into_______ |
| A. | Polygons |
| B. | Lines |
| C. | Surfaces |
| D. | None of the above |
| Answer» A. Polygons | |
| 293. | Which of the following is not Liquid-based RP system? |
| A. | Stereolithography Apparatus (SLA) |
| B. | Laminated Object Manufacturing (LOM) |
| C. | Solid Ground Curing (SGC) |
| D. | Solid Object Ultraviolet-Laser Printer (SOUP |
| Answer» B. Laminated Object Manufacturing (LOM) | |
| 294. | Full form of FDM is_______ |
| A. | Fixed Development Modelling |
| B. | Fusion Development Modelling |
| C. | Fused Deposition Modelling |
| D. | Focused Deposition Modelling |
| Answer» C. Fused Deposition Modelling | |
| 295. | Full form of MJM is______ |
| A. | Multi Joint Modelling |
| B. | Multi Jet Modelling |
| C. | Muted Jet Modelling |
| D. | Mitred Jet Modelling |
| Answer» B. Multi Jet Modelling | |
| 296. | Which of the following is not Solid-based RP system? |
| A. | Laminated Object Manufacturing (LOM) |
| B. | Paper Lamination Technology (PLT) |
| C. | Electron Beam Melting (EBM) |
| D. | Fused Deposition Modeling (FDM) |
| Answer» C. Electron Beam Melting (EBM) | |
| 297. | Laminated Object Manufacturing (LOM) is developed by_______ |
| A. | Stratasys |
| B. | CAM-LEM |
| C. | Kira Corporation |
| D. | Cubic Technologies |
| Answer» D. Cubic Technologies | |
| 298. | Which of the following is not Powder-Based RP system? |
| A. | Selective Laser Sintering (SLS) |
| B. | Solid Object Ultraviolet-Laser Printer (SOUP) |
| C. | Electron Beam Melting (EBM) |
| D. | Direct Metal Deposition (DMD) |
| Answer» B. Solid Object Ultraviolet-Laser Printer (SOUP) | |
| 299. | Which of the following RP system is not developed by 3D systems? |
| A. | Selective Laser Sintering (SLS) |
| B. | Multi-Jet Modeling System (MJM) |
| C. | Paper Lamination Technology (PLT) |
| D. | Stereolithography Apparatus (SLA) |
| Answer» C. Paper Lamination Technology (PLT) | |
| 301. | Which of the following is used as base material in Electron Beam Melting (EBM) process? | |
| A. | Titanium alloys | |
| B. | Photopolymer | |
| C. | Various materials | |
| D. | Paper | |
| Answer» A. Titanium alloys | ||
| 302. | Which of the following is used as base material in Selective laser sintering (SLS)? |
| A. | Photopolymer |
| B. | Thermoplastics, Metal powders |
| C. | Titanium alloys |
| D. | Various materials |
| Answer» B. Thermoplastics, Metal powders | |
| 303. | Which of the following advantage does not possess by the rapid prototyping process over the traditional prototyping process? |
| A. | It consumes less time |
| B. | Gives better quality |
| C. | Reduces product launch time |
| D. | It’s cheaper |
| Answer» D. It’s cheaper | |
| 304. | STL file format is represented by interaction of ______ |
| A. | lines and hexagons |
| B. | lines and rectangles |
| C. | lines and triangles |
| D. | lines and circles |
| Answer» C. lines and triangles | |
| 305. | Which material possess the maximum strength? |
| A. | ABS |
| B. | PLA |
| C. | Nylon |
| D. | INF |
| Answer» C. Nylon | |
| 306. | Which material can be efficiently used as a support material? |
| A. | ABS |
| B. | PLA |
| C. | Nylon |
| D. | INF |
| Answer» D. INF | |
| 307. | Which material gives finest surface finish in RP? |
| A. | ABS |
| B. | PLA |
| C. | Nylon |
| D. | INF |
| Answer» B. PLA | |
| 308. | Which materials possess highest melting temperature? |
| A. | ABS |
| B. | PLA |
| C. | Nylon |
| D. | INF |
| Answer» C. Nylon | |
| 309. | Which file format cannot be converted into STL file format? |
| A. | .prt |
| B. | .sld |
| C. | .dwg |
| D. | .stp |
| Answer» C. .dwg | |
| 310. | STL files contains ______ |
| A. | mass properties of the model |
| B. | geometrical data |
| C. | drawing data |
| D. | all of the above |
| Answer» B. geometrical data | |
| 311. | In STL files when chord length decrease then accuracy _______ |
| A. | increase |
| B. | decrease |
| C. | may increase or may decrease |
| D. | remains constant |
| Answer» A. increase | |
| 312. | Which of the following is least important in design during rapid prototyping? |
| A. | Machine size |
| B. | Tolerance |
| C. | Material |
| D. | CAD software |
| Answer» B. Tolerance | |
| 313. | Drilling, milling and threading are examples of which kind of processes? |
| A. | Additive manufacturing |
| B. | Subtractive manufacturing |
| C. | Formative manufacturing |
| D. | None of the above |
| Answer» B. Subtractive manufacturing | |
| 314. | Which of the following is not an example of additive manufacturing? |
| A. | Fused-deposition-modeling |
| B. | Electron beam machining |
| C. | SLS |
| D. | Injection molding |
| Answer» D. Injection molding | |
| 315. | In 4D printing, which one is the fourth dimension? |
| A. | Time |
| B. | Material |
| C. | Sound |
| D. | Light |
| Answer» A. Time | |
| 316. | Which of the following is not a data interfacing format? |
| A. | STL |
| B. | SLC |
| C. | LEAF |
| D. | RP |
| Answer» D. RP | |
| 317. | Which of the following is a data interfacing format? |
| A. | HP/GL |
| B. | ACER |
| C. | ASUS |
| D. | IBM |
| Answer» A. HP/GL | |
| 318. | STL consists of an unordered list of _______ facets representing the outside skin of an object. |
| A. | linear |
| B. | triangular |
| C. | square |
| D. | hexagonal |
| Answer» B. triangular | |
| 319. | STL file consists of which of the following format? |
| A. | ASCII |
| B. | Binary |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» C. Both A & B | |
| 320. | STL files plague several problems as they contain no _______ data |
| A. | geographical |
| B. | analytical |
| C. | topological |
| D. | all of the above |
| Answer» C. topological | |
| 321. | In laminated object manufacturing (LOM), which of the following cutting strategy is preferable? |
| A. | Directional scanning |
| B. | Zigzag tool paths |
| C. | Contouring and spiral paths |
| D. | Boundary cutting tool paths |
| Answer» D. Boundary cutting tool paths | |
| 322. | A tessellated model is said to be valid if there are ________ |
| A. | no missing facets |
| B. | no degenerate facets |
| C. | no overlapping facets |
| D. | all of the above |
| Answer» D. all of the above | |
| 323. | Among the following, which one is the last step in Data Processing for Rapid Prototyping? |
| A. | Model slicing |
| B. | Part orientation |
| C. | Tool path generation |
| D. | Support generation |
| Answer» C. Tool path generation | |
| 324. | Among the following, which one is the earliest step in Data Processing for Rapid Prototyping? |
| A. | Model slicing |
| B. | Part orientation |
| C. | Tool path generation |
| D. | Support generation |
| Answer» B. Part orientation | |
| 326. | What type of inner structure can be used to reduce the printing time of the model in RP? |
| A. | Higher resolution |
| B. | Smaller polygons |
| C. | Lower resolution |
| D. | None of the above |
| Answer» C. Lower resolution | |
| 327. | Which of the following is an optional section of IGES format? |
| A. | Start section |
| B. | Global section |
| C. | Terminate section |
| D. | Flag section |
| Answer» D. Flag section | |
| 328. | Which one is NOT related to rapid prototyping definition? |
| A. | Layer by layer |
| B. | Physical model |
| C. | From 3D CAD data |
| D. | Production line |
| Answer» D. Production line | |
| 329. | Which one of the processes is NOT using a laser? |
| A. | FDM |
| B. | SLA |
| C. | SLS |
| D. | LOM |
| Answer» A. FDM | |
| 330. | Which of the following is the process in the RP cycle? |
| A. | Post-processing |
| B. | Transfer to machine |
| C. | Pre-processing |
| D. | All of the above |
| Answer» D. All of the above | |
| 331. | Which of the following is one of the design process steps? |
| A. | Build |
| B. | Concept |
| C. | Pre-processing |
| D. | Transfer to machine |
| Answer» B. Concept | |
| 332. | What is the format for the prototyping machine file? |
| A. | .prt |
| B. | .slt |
| C. | .stl |
| D. | .iges |
| Answer» C. .stl | |
| 333. | Which CAD software cannot be used to create data for the prototyping machine? |
| A. | CREO |
| B. | CATIA |
| C. | NX Unigraphics |
| D. | Adobe Illustrator |
| Answer» D. Adobe Illustrator | |
| 334. | Which one of the process is subtractive prototyping? |
| A. | 5 axis CNC Milling |
| B. | Fused Deposition Modeling |
| C. | Multi-Jet Modeling |
| D. | Stereolithography Apparatus |
| Answer» A. 5 axis CNC Milling | |
| 335. | From the following, in which process, the input material is in solid form? |
| A. | SLA |
| B. | SLS |
| C. | FDM |
| D. | MJM |
| Answer» C. FDM | |
| 336. | Which of the process, the input material is in liquid form? |
| A. | LOM |
| B. | SLS |
| C. | FDM |
| D. | MJM |
| Answer» D. MJM | |
| 337. | Which of the process, the input material is in powder form? |
| A. | LOM |
| B. | SLS |
| C. | FDM |
| D. | MJM |
| Answer» B. SLS | |
| 338. | Which material is NOT available for LOM process? |
| A. | Paper |
| B. | Plastic |
| C. | Metal |
| D. | Glass |
| Answer» D. Glass | |
| 339. | Which of the process is using the extrusion concept? |
| A. | SLA |
| B. | SLS |
| C. | FDM |
| D. | MJM |
| Answer» C. FDM | |
| 340. | Which of the following is the process of the pre-processing stage? |
| A. | Remove support |
| B. | Checking 3D CAD data |
| C. | De-powdering loose material |
| D. | Dip in a binder to strengthen the part |
| Answer» B. Checking 3D CAD data | |
| 341. | A computer model of a part design on a CAD system is called which of the following? |
| A. | Computer Prototype |
| B. | Geometric Prototype |
| C. | Solid Prototype |
| D. | Virtual Prototype |
| Answer» D. Virtual Prototype | |
| 342. | Machining is never used for rapid prototyping because it takes too long. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 343. | In the context of rapid prototyping and additive manufacturing, tessellation refers to the process of slicing the CAD model of the part into layers. |
| A. | Droplet Deposition Manufacturing |
| B. | Used-Deposition Modeling |
| C. | Laminated-Object Manufacturing |
| D. | Stereolithography |
| Answer» D. Stereolithography | |
| 344. | Which of the following RP technologies uses powders as the starting material? |
| A. | Droplet Deposition Manufacturing |
| B. | Fused-Deposition Modeling |
| C. | Selective Laser Sintering |
| D. | Stereolithography |
| Answer» C. Selective Laser Sintering | |
| 345. | Which of the following RP technologies uses molten material as the starting material? |
| A. | Three-Dimensional Printing |
| B. | Fused-Deposition Modeling |
| C. | Stereolithography |
| D. | Selective Laser Sintering |
| Answer» C. Stereolithography | |
| 346. | Which one of the following RP technologies uses solid sheet stock as the starting material? |
| A. | Droplet deposition manufacturing |
| B. | Fused-deposition modeling |
| C. | Laminated-Object Manufacturing |
| D. | Selective Laser Sintering |
| Answer» C. Laminated-Object Manufacturing | |
| 347. | Which of the following are examples of appropriate applications of additive manufacturing in the actual production of parts and products? |
| A. | Castings made in small quantities |
| B. | Plastic parts in small batch sizes |
| C. | Mass-produced metal parts |
| D. | Special textile products |
| Answer» B. Plastic parts in small batch sizes | |
| 348. | Which of the following are problems with the current rapid prototyping and additive manufacturing technologies? |
| A. | Limited material variety |
| B. | Inability to convert a solid part into layers |
| C. | Poor machinability of the starting material |
| D. | The inability of the designer to design the part |
| Answer» A. Limited material variety | |
| 349. | Of all of the current material addition rapid prototyping technologies, which one is the most widely used? |
| A. | Ballistic particle manufacturing |
| B. | Selective laser sintering |
| C. | Solid ground curing |
| D. | Stereolithography |
| Answer» D. Stereolithography | |
| 351. | Which one of the following is not a direct rapid tooling method? |
| A. | LOM Composite |
| B. | Direct AIM (ACES Injection Molding) |
| C. | Sand Molding |
| D. | Injection molding |
| Answer» D. Injection molding | |
| 352. | In the process of Selective Laser Sintering, raw material used is in the form of ______ |
| A. | machining wax |
| B. | foam core |
| C. | powder |
| D. | rubber |
| Answer» C. powder | |
| 353. | In Selective Laser Sintering, laser light is also being used. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 354. | Explicit support structures are not required in Selective Laser Sintering (SLS). |
| A. | True |
| B. | False |
| Answer» A. True | |
| 355. | Which of the following process is suitable for making injection molding tools? |
| A. | SL |
| B. | SLS |
| C. | EBM |
| D. | FDM |
| Answer» B. SLS | |
| 356. | Which one of the following is not Extrusion-Based RP Systems? |
| A. | Fused Deposition Modelling (FDM) |
| B. | 3D Printing |
| C. | Sheet Lamination (Laminated Object Manufacturing (LOM)) |
| D. | Electron Beam melting (EBM) |
| Answer» D. Electron Beam melting (EBM) | |
| 357. | Which of the following is the firststep of the rapid prototyping process? |
| A. | 3D Modeling |
| B. | Data Conversion |
| C. | Building |
| D. | Postprocessing |
| Answer» A. 3D Modeling | |
| 358. | Which of the following is the last step of the rapid prototyping process? |
| A. | 3D Modeling |
| B. | Data Conversion |
| C. | Building |
| D. | Postprocessing |
| Answer» D. Postprocessing | |
| 359. | In STL files Euler’s rule for solids can be written as |
| A. | No. of faces – No. of edges + No. of vertices = 3 x No. of bodies |
| B. | No. of faces – No. of edges + No. of vertices = No. of bodies |
| C. | No. of faces – No. of edges + No. of vertices = 2 x No. of bodies |
| D. | No. of faces – No. of edges + No. of vertices = 4 x No. of bodies |
| Answer» C. No. of faces – No. of edges + No. of vertices = 2 x No. of bodies | |
| 360. | Which of the following is a stage of Product Life Cycle? |
| A. | Introduction stage |
| B. | Growth stage |
| C. | Mature stage |
| D. | All of the above |
| Answer» D. All of the above | |
| 361. | In “Product Life Cycle” a stage represents rapid growth of product sale known as_____. |
| A. | Saturation stage |
| B. | Mature stage |
| C. | Growth stage |
| D. | Introduction stage |
| Answer» C. Growth stage | |
| 362. | In “Product Life Cycle” a stage represents a new and previously unknown product for buyers known as_____. |
| A. | Mature stage |
| B. | Introduction stage |
| C. | Decline stage |
| D. | None of the above |
| Answer» B. Introduction stage | |
| 363. | In “Product Life Cycle” a stage in which buyers move on to other products and sales drop is known as_____. |
| A. | Growth stage |
| B. | Introduction stage |
| C. | Mature stage |
| D. | Decline stage |
| Answer» D. Decline stage | |
| 364. | In “Product Life Cycle” in _______ stage market becomes saturated |
| A. | Mature stage |
| B. | Growth stage |
| C. | Decline stage |
| D. | Introduction stage |
| Answer» A. Mature stage | |
| 365. | The technology life cycle concerned with the time and cost of developing the technology |
| A. | True |
| B. | False |
| Answer» A. True | |
| 366. | The time duration of useful life of any product is known as a product’s life cycle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 367. | The technology is defined as the sophistication of a plant ,any equipment or any machine etc |
| A. | True |
| B. | False |
| Answer» B. False | |
Chapter: Robotics and Automation
| 368. | ____ is a manufacturing philosophy in which different parts are manufactured in a small batch or group based on similarities |
| A. | Production technology |
| B. | Group technology |
| C. | Flexible manufacturing system |
| D. | None of the above |
| Answer» B. Group technology | |
| 369. | Which layout is mostly used for batch type of production? |
| A. | Product layout |
| B. | Process layout |
| C. | In line layout |
| D. | None of the above |
| Answer» B. Process layout | |
| 370. | In which layout manufacturing is done according to machine arrangement |
| A. | GT layout |
| B. | Product layout |
| C. | Process layout |
| D. | Hybrid layout |
| Answer» C. Process layout | |
| 371. | In which layout manufacturing is done according to product’s characteristics? |
| A. | Process layout |
| B. | GT layout |
| C. | Product layout |
| D. | Both A & B |
| Answer» D. Both A & B | |
| 372. | From the following which is type of coding system? |
| A. | OPITZ coding system |
| B. | KK3 system |
| C. | The MICLASS system |
| D. | All of the above |
| Answer» D. All of the above | |
| 373. | From the following in which coding method supplementary code and form code are used? |
| A. | KK3 system |
| B. | The MICLASS system |
| C. | OPITZ coding system |
| D. | The DICLASS system |
| Answer» C. OPITZ coding system | |
| 374. | ____ is a collection of parts which have similar characteristics |
| A. | Part family |
| B. | Mono family |
| C. | GT family |
| D. | Poly family |
| Answer» A. Part family | |
| 376. | Cellular manufacturing is not a application of thought of group technology. |
| A. | True |
| B. | False |
| C. | D |
| Answer» A. True | |
| 377. | Form which of the following is the objective of cellular manufacturing. |
| A. | Reduced manufacturing lead time |
| B. | Increased in quality |
| C. | Reduced setup time |
| D. | All of the above |
| Answer» D. All of the above | |
| 378. | ____ is a highly automated group of GT machine cell. |
| A. | Flexible manufacturing system |
| B. | Group technology |
| C. | Automated system |
| D. | None of the above |
| Answer» A. Flexible manufacturing system | |
| 379. | From the following which is the main components of Flexible manufacturing system(FMS). |
| A. | Main frame computer |
| B. | Automated guided vehicle |
| C. | Material handling system |
| D. | All of the above |
| Answer» D. All of the above | |
| 380. | From the following what is the full form of AGV? |
| A. | Automatic Guided Vehicle |
| B. | Automated Gas Vehicle |
| C. | Automated Guided Vehicle |
| D. | None of the above |
| Answer» C. Automated Guided Vehicle | |
| 381. | From the following which is the types of Automated Guided Vehicle (AGV). |
| A. | Driver less train |
| B. | Pallet trucks |
| C. | Unit load carriers |
| D. | All of the above |
| Answer» D. All of the above | |
| 382. | From the following which method is used to guide the AGV. |
| A. | Wire guided |
| B. | Paint strip |
| C. | Self guided vehicle |
| D. | All of the above |
| Answer» D. All of the above | |
| 383. | From the following which is not the application of AGV. |
| A. | Truck loading and unloading |
| B. | To change the tool |
| C. | Material transfer |
| D. | Paper roll transfer |
| Answer» B. To change the tool | |
| 384. | From the following which is the benefits of AGV. |
| A. | Reduction in man-hours |
| B. | Useful in hazardous area |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 385. | A combination of equipment and controls which handles, stores and retrieves materials with precision,accuracy and speed under a defined degree of automation is known as ____ |
| A. | Automated storage and retrieval system (AS/RS) |
| B. | Flexible manufacturing system |
| C. | Automated guided vehicle |
| D. | None of the above |
| Answer» A. Automated storage and retrieval system (AS/RS) | |
| 386. | From the following which is the benefits of AS/RS |
| A. | Less product damage |
| B. | Good and easy housekeeping in FMS |
| C. | Reduce labour cost |
| D. | All of the above |
| Answer» D. All of the above | |
| 387. | From the following which is the type of FMS layout |
| A. | In line layout |
| B. | Ladder layout |
| C. | Both A &B |
| D. | None of the above |
| Answer» C. Both A &B | |
| 388. | What is the full form of AS/RS in FMS? |
| A. | Automated storage and recovery system |
| B. | Automatic storage and rotary system |
| C. | Automated storage and retrieval system |
| D. | Automated storage and regenerative system |
| Answer» C. Automated storage and retrieval system | |
| 389. | From the following in which FMS layout machine tools are kept along a straight line. |
| A. | Loop layout |
| B. | In line layout |
| C. | Ladder layout |
| D. | Open field layout |
| Answer» B. In line layout | |
| 390. | From the following in which FMS layout workstations are arranged in a loop |
| A. | Ladder layout |
| B. | In line layout |
| C. | Loop layout |
| D. | None of the above |
| Answer» C. Loop layout | |
| 391. | From the following in which FMS layout workstations are arranged in a loop with rungs |
| A. | Ladder layout |
| B. | Open field layout |
| C. | Loop layout |
| D. | None of the above |
| Answer» A. Ladder layout | |
| 392. | From the following which FMS layout is combination of many loop and ladder layout |
| A. | Ladder layout |
| B. | Open field layout |
| C. | Loop layout |
| D. | None of the above |
| Answer» B. Open field layout | |
| 393. | From the following in which FMS layout robots are used as material handling system |
| A. | Ladder layout |
| B. | Open field layout |
| C. | Loop layout |
| D. | Robot centered layout |
| Answer» D. Robot centered layout | |
| 394. | If the production is done according to change in various product design easily then such manufacturing system is called as flexible system. |
| A. | True. |
| B. | False. |
| Answer» B. False. | |
| 395. | From which of the following is not the main element of Flexible manufacturing system |
| A. | Work handling system |
| B. | Material handling system |
| C. | Tool handling system |
| D. | Main frame computer |
| Answer» A. Work handling system | |
| 396. | From the following which is the function of material handling system used in FMS |
| A. | Handling of parts with different variety |
| B. | Independent movement of part between stations |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. Independent movement of part between stations | |
| 397. | ____ is an independent and self-operated vehicle which moves on defined guide ways |
| A. | Automated Guarded Vehicles |
| B. | Automated Storage and Retrieval System |
| C. | Automated Guided Vehicles |
| D. | Automated Driving Vehicles |
| Answer» C. Automated Guided Vehicles | |
| 398. | From the following which material handling equipment is used in ladder layout of FMS |
| A. | Conveyor systems |
| B. | AGVS |
| C. | Both A & B |
| D. | None of the above |
| Answer» C. Both A & B | |
| 399. | From the following which material handling equipment is used in Robot centered layout of FMS |
| A. | Industrial Robot |
| B. | Conveyor systems |
| C. | Rail guided vehicle system |
| D. | None of the above |
| Answer» A. Industrial Robot | |
| 401. | _____ is area of engineering and science which understand the different principles, structure and programming of robot |
| A. | Mechatronics |
| B. | Robotics |
| C. | Aeronautics |
| D. | None of the above |
| Answer» B. Robotics | |
| 402. | ____ is also known as work volume of robot |
| A. | Work envelope |
| B. | Speed of movement |
| C. | Load carrying capacity |
| D. | Precision of movement |
| Answer» A. Work envelope | |
| 403. | The speed at which robot is capable of manipulating its end effector is known as the____. |
| A. | Velocity of robot |
| B. | Maximum reach |
| C. | Speed of movement |
| D. | Load carrying capacity |
| Answer» C. Speed of movement | |
| 404. | The capacity of robot to carry load is known as_____. |
| A. | Load carrying capacity |
| B. | Work envelope |
| C. | Maximum reach |
| D. | None of the above |
| Answer» A. Load carrying capacity | |
| 405. | ____ is a collection of mechanical linkage connected by joints |
| A. | End effector |
| B. | Gripper |
| C. | Sensor |
| D. | Manipulator |
| Answer» D. Manipulator | |
| 406. | Sensors are the transducers that are used to____. |
| A. | Measure physical quantity |
| B. | Hold the objects |
| C. | Fix the objects |
| D. | None of the above |
| Answer» A. Measure physical quantity | |
| 407. | From which of the following is the geometrical configuration of robot |
| A. | Cylindrical configuration |
| B. | Polar configuration |
| C. | Both A& B |
| D. | None of the above |
| Answer» C. Both A& B | |
| 408. | ____ grippers are used to pick up light weight materials such as paper,cloth etc |
| A. | Mechanical grippers |
| B. | Adhesive grippers |
| C. | Vacuum cup grippers |
| D. | Magnetic grippers |
| Answer» B. Adhesive grippers | |
| 409. | ____ grippers are used to transfer ferrous material |
| A. | Magnetic grippers |
| B. | Mechanical grippers |
| C. | Adhesive grippers |
| D. | Vacuum cup grippers |
| Answer» A. Magnetic grippers | |
| 410. | The technology is defined as the sophistication of a plant ,any equipment or any machine etc |
| A. | True |
| B. | False |
| C. | D |
| Answer» B. False | |
| 411. | Sensors which are come in contact with some surface to measured desired physical variable are known as____ |
| A. | Non-contact sensors |
| B. | Proximity sensors |
| C. | Contact sensors |
| D. | None of the above |
| Answer» C. Contact sensors | |
| 412. | From which of the following is known as contact sensor. |
| A. | Tactile sensor |
| B. | Proximity sensor |
| C. | Visual sensor |
| D. | Range detector |
| Answer» A. Tactile sensor | |
| 413. | From which of the following is known as non-contact sensor |
| A. | Force sensor |
| B. | Tactile sensor |
| C. | Proximity sensor |
| D. | None of the above |
| Answer» C. Proximity sensor | |
| 414. | From which of the following is robot programming language |
| A. | VAL |
| B. | AML |
| C. | ABD |
| D. | Both A & B |
| Answer» D. Both A & B | |
| 415. | ____ sensors are used to indicate presence or absence of hot objects |
| A. | Vision sensors |
| B. | Infrared sensors |
| C. | Photo-metric sensors |
| D. | Range detectors |
| Answer» B. Infrared sensors | |
| 416. | ____ sensors are used to identify objects for pick and place purpose |
| A. | Range detectors |
| B. | Infrared sensors |
| C. | Vision sensors |
| D. | Photo-metric sensors |
| Answer» C. Vision sensors | |
| 417. | Up and down motion along an axis known as ____ in robotics |
| A. | Pitch |
| B. | Roll |
| C. | Yaw |
| D. | None of the above |
| Answer» A. Pitch | |
| 418. | Circular motion along an axis is known as ____ in robotics. |
| A. | Pitch |
| B. | Roll |
| C. | Yaw |
| D. | None of the above |
| Answer» B. Roll | |
| 419. | The operating range or reach capability of robot is known as ____ in robotics |
| A. | Roll |
| B. | Pitch |
| C. | Yaw |
| D. | Speed of movement |
| Answer» C. Yaw | |
| 420. | From which of the following is robot programming method |
| A. | Manual method |
| B. | Lead through method |
| C. | Walk through method |
| D. | All of the above |
| Answer» D. All of the above | |
| 421. | Which type of motion is possible in Cartesian coordinate robots? |
| A. | 3 linear motion |
| B. | 2 linear and 1 rotational motion |
| C. | 3 rotational motion |
| D. | 1 linear and 1 rotational motion |
| Answer» A. 3 linear motion | |
| 422. | Which type of motion is possible in cylindrical coordinate robots? |
| A. | 3 rotational motion |
| B. | 3 linear and 1 rotational motion |
| C. | 2 linear and 1 rotational motion |
| D. | 3 linear motion |
| Answer» C. 2 linear and 1 rotational motion | |
| 423. | Which type of motion is possible in polar coordinate robots? |
| A. | 2 linear and 1 rotational motion |
| B. | 3 linear motion |
| C. | 3 rotational motion |
| D. | 2 rotational and 1 linear motion |
| Answer» D. 2 rotational and 1 linear motion | |
| 424. | Which type of motion is possible in jointed arm robots |
| A. | 3 linear and 1 rotational motion |
| B. | 3 rotational motion |
| C. | 3 linear motion |
| D. | 2 linear and 1 rotational motion |
| Answer» B. 3 rotational motion | |
| 426. | From the following which type of work envelope is made in jointed arm robot | |
| A. | Rectangular work envelope | |
| B. | Cylindrical work envelope | |
| C. | Spherical or hemispherical work envelope | |
| D. | C | |
| Answer» B. Cylindrical work envelope | ||
| 427. | ____ is the bridge between design and manufacturing |
| A. | Production planning |
| B. | Process Planning |
| C. | Product design |
| D. | None of the above |
| Answer» B. Process Planning | |
| 428. | From which of the following is the type of computer aided process planning |
| A. | Variant process planning |
| B. | Generative process planning |
| C. | Both A &B |
| D. | None of the above |
| Answer» C. Both A &B | |
| 429. | From the following which is not the type of protocol used in CIM? |
| A. | Open standard interconnection – OSI |
| B. | Manufacturing Automation Protocol – MAP |
| C. | Technical and Industrial Protocol – TIP |
| D. | None of the above |
| Answer» C. Technical and Industrial Protocol – TIP | |
| 430. | ____ is defined as the set of technologies that can construct physical solid models from CAD data |
| A. | Rapid Production |
| B. | Rapid prototyping |
| C. | Lean Manufacturing |
| D. | Artificial intelligence |
| Answer» B. Rapid prototyping | |
| 431. | From which of the following is benefit of computer integrated manufacturing(CIM). |
| A. | Reduced lead time |
| B. | Increased production time |
| C. | Reduced productivity |
| D. | All of the above |
| Answer» A. Reduced lead time | |
| 432. | Cellular manufacturing is also known as_______ |
| A. | Manufacturing Technology |
| B. | Production Technology |
| C. | Group Technology |
| D. | None of the above |
| Answer» C. Group Technology | |
| 433. | In a simple and visual method of Cell design, the priorities in classifying may be in the order |
| A. | Rotational or non rotational – Material – Size – Shape |
| B. | Material – Rotational or non rotational – Size – Shape |
| C. | Size – Rotational or non rotational – Material – Shape |
| D. | Shape – Rotational or non rotational – Material – Size |
| Answer» A. Rotational or non rotational – Material – Size – Shape | |
| 434. | In Opitz system, 2nd digit indicates |
| A. | Type and Shape |
| B. | External shape and external shape elements |
| C. | External plane surface finishing |
| D. | Auxiliary hole and gear teeth |
| Answer» B. External shape and external shape elements | |
| 435. | In cell formation using production flow analysis, the following process will be left out of the analysis |
| A. | Grinding |
| B. | Milling |
| C. | Drilling |
| D. | Gear cutting |
| Answer» D. Gear cutting | |
| 436. | Which of the following technique of grouping does not consider the design and shape aspect? |
| A. | A simple and visual method of cell design |
| B. | Family formation by classification and codification |
| C. | Cell formation using Production Flow Analysis |
| D. | All of the above |
| Answer» C. Cell formation using Production Flow Analysis | |
| 437. | The following is basically a material flow simplification technique |
| A. | A simple and visual method of cell design |
| B. | Family formation by classification and codification |
| C. | Cell formation using Production Flow Analysis |
| D. | All of the above |
| Answer» C. Cell formation using Production Flow Analysis | |
| 438. | Which layout is mostly used for the batch type of production? |
| A. | Product layout |
| B. | Process layout |
| C. | In line layout |
| D. | None of the above |
| Answer» B. Process layout | |
| 439. | From the following in which type of GT code chain-type structure is used? |
| A. | Poly code |
| B. | Hybrid code |
| C. | Mono code |
| D. | None of the above |
| Answer» A. Poly code | |
| 440. | From the following in which type of GT code tree-type structure is used? |
| A. | Poly code |
| B. | Hybrid code |
| C. | Mono code |
| D. | None of the above |
| Answer» C. Mono code | |
| 441. | Which system uses computers at lower-level strategies |
| A. | Variant CAPP |
| B. | Generative CAPP |
| C. | Hybrid CAPP |
| D. | All of the above |
| Answer» A. Variant CAPP | |
| 442. | Which system uses computers at higher level strategies |
| A. | Variant CAPP |
| B. | Generative CAPP |
| C. | Hybrid CAPP |
| D. | All of the above |
| Answer» B. Generative CAPP | |
| 443. | If all the processing equipment and machines are arranged according to the sequence of operations of a product the layout is known as |
| A. | Product layout |
| B. | Process layout |
| C. | Fixed-position layout |
| D. | GT layout |
| Answer» A. Product layout | |
| 444. | The following type of layout is preferred to manufacture a standard product in large quantity |
| A. | Product layout |
| B. | Process layout |
| C. | Fixed-position layout |
| D. | GT layout |
| Answer» A. Product layout | |
| 445. | The following type of layout is preferred for low volume production of non-standard products |
| A. | Product layout |
| B. | Process layout |
| C. | Fixed-position layout |
| D. | GT layout |
| Answer» B. Process layout | |
| 446. | In ship manufacturing, the type of layout preferred is |
| A. | Product layout |
| B. | Process layout |
| C. | Fixed-position layout |
| D. | GT layout |
| Answer» C. Fixed-position layout | |
| 447. | Which of the following is not the method of part family formation |
| A. | Visual inspection method |
| B. | Automatic product sorting |
| C. | Parts classification & coding |
| D. | Production flow analysis |
| Answer» B. Automatic product sorting | |
| 448. | Choose the right sequence for Production Flow Analysis |
| A. | PFA Chart – Data Collection – Sortation of process plans |
| B. | Data collection – PFA chart – Sortation of process plans |
| C. | Sortation of process plans – Data collection – PFA chart |
| D. | Data collection – Sortation of process plans – PFA chart |
| Answer» D. Data collection – Sortation of process plans – PFA chart | |
| 449. | Chain type coding structure is also known as________ |
| A. | Poly code |
| B. | Mono code |
| C. | Hybrid code |
| D. | Miscellaneous code |
| Answer» A. Poly code | |
| 451. | The middle four digits of the Opitz classification system are ______ |
| A. | Form code |
| B. | Secondary code |
| C. | Supplementary code |
| D. | Stationary code |
| Answer» C. Supplementary code | |
| 452. | The last four digits of the Opitz classification system are ______ |
| A. | Form code |
| B. | Secondary code |
| C. | Supplementary code |
| D. | Stationary code |
| Answer» B. Secondary code | |
| 453. | Form code of the Opitz system is for_________ |
| A. | Design attributes |
| B. | Manufacturing attributes |
| C. | Production operation type & sequence |
| D. | Maintenance flow |
| Answer» A. Design attributes | |
| 454. | Supplementary code of the Opitz system is for_________ |
| A. | Design attributes |
| B. | Manufacturing attributes |
| C. | Production operation type & sequence |
| D. | Maintenance flow |
| Answer» B. Manufacturing attributes | |
| 455. | Secondary code of the Opitz system is for_________ |
| A. | Design attributes |
| B. | Manufacturing attributes |
| C. | Production operation type & sequence |
| D. | Maintenance flow |
| Answer» C. Production operation type & sequence | |
| 456. | Digit 1 in Opitz system is for_________ |
| A. | Part class |
| B. | Main shape |
| C. | Rotational machining |
| D. | Plane surface machining |
| Answer» A. Part class | |
| 457. | Digit 2 in Opitz system is for_________ |
| A. | Part class |
| B. | Main shape |
| C. | Rotational machining |
| D. | Plane surface machining |
| Answer» B. Main shape | |
| 458. | Digit 3 in Opitz system is for_________ |
| A. | Part class |
| B. | Main shape |
| C. | Rotational machining |
| D. | Plane surface machining |
| Answer» C. Rotational machining | |
| 459. | Digit 4 in Opitz system is for_________ |
| A. | Part class |
| B. | Main shape |
| C. | Rotational machining |
| D. | Plane surface machining |
| Answer» D. Plane surface machining | |
| 460. | Digit 5 in Opitz system is for_________ |
| A. | Part class |
| B. | Main shape |
| C. | Additional holes, teeth and forming |
| D. | Plane surface machining |
| Answer» C. Additional holes, teeth and forming | |
| 461. | Use computers for storage and retrieval of the data for the process plans are? |
| A. | Lower-level strategies |
| B. | Intermediate strategies |
| C. | Higher-level strategies |
| D. | Morden-level strategies |
| Answer» A. Lower-level strategies | |
| 462. | A use computer to automatically generate process plans is? |
| A. | Lower-level strategies |
| B. | Intermediate strategies |
| C. | Higher-level strategies |
| D. | Morden-level strategies |
| Answer» C. Higher-level strategies | |
| 463. | Which automation is suited for high production quantities |
| A. | Flexible |
| B. | Programmable |
| C. | Fixed |
| D. | All of above |
| Answer» C. Fixed | |
| 464. | Which manufacturing system is best suited for batch production |
| A. | Flexible |
| B. | Programmable |
| C. | Fixed |
| D. | All of above |
| Answer» B. Programmable | |
| 465. | ——–is a manufacturing system in which sequence of operation is fixed by equipment configuration |
| A. | Flexible |
| B. | Programmable |
| C. | Fixed |
| D. | All of above |
| Answer» C. Fixed | |
| 466. | A company is producing 15000 mobiles annually. Determine production scale of company |
| A. | Low Production |
| B. | Medium Production |
| C. | High Production |
| D. | None |
| Answer» C. High Production | |
| 467. | Which one of the following statements is TRUE? |
| A. | Teach pendant is used for lead-through teaching. |
| B. | Teach pendant is used for manual teaching. |
| C. | Teach pendant is used for off-line teaching of robots. |
| D. | Teach pendant is not used in robot teaching. |
| Answer» B. Teach pendant is used for manual teaching. | |
1.
Which coordinate system is a device-dependent coordinate system?
A.
World Coordinate System
B.
Model Coordinate System
C.
User Coordinate System
D.
Screen Coordinate System
Answer» D. Screen Coordinate System
2.
Which of the following is the default coordinate system?
A.
User Coordinate System
B.
World Coordinate System
C.
Screen Coordinate System
D.
None of the above
Answer» B. World Coordinate System
3.
When every entity of a geometric model remains parallel to its initial position, the transformation is called as
A.
User Coordinate System
B.
World Coordinate System
C.
Screen Coordinate System
D.
None of the above
Answer» B. World Coordinate System
4.
In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved?
A.
User Coordinate System
B.
World Coordinate System
C.
Screen Coordinate System
D.
None of the above
Answer» B. World Coordinate System
5.
The matrix representation for translation in homogeneous coordinates is
A.
User Coordinate System
B.
World Coordinate System
C.
Screen Coordinate System
D.
None of the above
Answer» B. World Coordinate System
6.
The matrix representation for scaling in homogeneous coordinates is
A.
P’=S*P
B.
P’=R*P
C.
P’=dx+dy
D.
P’=S*S
Answer» A. P’=S*P
7.
The two-dimensional rotation equation in the matrix form is
A.
P’=T+P
B.
P’=S*P
C.
P’=R*P
D.
P’=dx+dy
Answer» C. P’=R*P
8.
What is the use of homogeneous coordinates and matrix representation?
A.
To treat all 3 transformations in a consistent way
B.
To scale
C.
To rotate
D.
To shear the object
Answer» A. To treat all 3 transformations in a consistent way
9.
If point are expressed in homogeneous coordinates then the pair of (x, y) is represented as
A.
(x’, y’, z’)
B.
(x, y, z)
C.
(x’, y’, w’)
D.
(x’, y’, w)
Answer» D. (x’, y’, w)
10.
For 2D transformation the value of third coordinate i.e. w (or h) =?
A.
1
B.
0
C.
-1
D.
Any value
Answer» A. 1
11.
We can combine the multiplicative and translational terms for 2D into a single matrix representation by expanding
A.
2 x 2 matrix into 4×4 matrix
B.
2 x 2 matrix into 3 x 3
C.
3 x 3 matrix into 2 x 2
D.
Only c
Answer» B. 2 x 2 matrix into 3 x 3
12.
The general homogeneous coordinate representation can also be written as
A.
(h.x, h.y, h.z)
B.
(h.x, h.y, h)
C.
(x, y, h.z)
D.
(x,y,z)
Answer» B. (h.x, h.y, h)
13.
In homogeneous coordinates value of ‘h’ is consider as 1 & it is called…..
A.
Magnitude Vector
B.
Unit Vector
C.
Non-Zero Vector
D.
Non-Zero Scalar Factor
Answer» D. Non-Zero Scalar Factor
14.
Which co-ordinates allow common vector operations such as translation, rotation, scaling and perspective projection to be represented as a matrix by which the vector is multiplied?
A.
vector co-ordinates
B.
3D co-ordinates
C.
affine co-ordinates
D.
homogenous co-ordinates
Answer» D. homogenous co-ordinates
15.
In Coordinates, a points in n-dimensional space is represent by (n+1) coordinates.
A.
Scaling
B.
Homogeneous
C.
Inverse transformation
D.
3D Transformation
Answer» B. Homogeneous
16.
A translation is applied to an object by D
A.
Repositioning it along with straight line path
B.
Repositioning it along with circular path
C.
Only b
D.
All of the mentioned
Answer» A. Repositioning it along with straight line path
17.
We translate a two-dimensional point by adding
A.
Translation distances
B.
Translation difference
C.
X and Y
D.
Only a
Answer» D. Only a
18.
The translation distances (dx, dy) is called as
A.
Translation vector
B.
Shift vector
C.
Both a and b
D.
Neither a nor b
Answer» C. Both a and b
19.
In 2D-translation, a point (x, y) can move to the new position (x’, y’) by using the equation
A.
x’=x+dx and y’=y+dx
B.
x’=x+dx and y’=y+dy
C.
X’=x+dy and Y’=y+dx
D.
X’=x-dx and y’=y-dy
Answer» B. x’=x+dx and y’=y+dy
20.
The two-dimensional translation equation in the matrix form is
A.
P’=P+T
B.
P’=P-T
C.
P’=P*T
D.
P’=P
Answer» A. P’=P+T
21.
——-is a rigid body transformation that moves objects without deformation.
A.
Rotation
B.
Scaling
C.
Translation
D.
All of the mentioned
Answer» C. Translation
22.
A straight line segment is translated by applying the transformation equation
A.
P’=P+T
B.
Dx and Dy
C.
P’=P+P
D.
Only c
Answer» A. P’=P+T
23.
Polygons are translated by adding to the coordinate position of each vertex and the current attribute setting.
A.
Straight line path
B.
Translation vector
C.
Differences
D.
Only b
Answer» D. Only b
24.
To change the position of a circle or ellipse we translate
A.
Center coordinates
B.
Center coordinates and redraw the figure in new location
C.
Outline coordinates
D.
All of the mentioned
Answer» B. Center coordinates and redraw the figure in new location
25.
The basic geometric transformations are
A.
Translation
B.
Rotation
C.
Scaling
D.
All of the mentioned
Answer» D. All of the mentioned
26.
A two dimensional rotation is applied to an object by
A.
Repositioning it along with straight line path
B.
Repositioning it along with circular path
C.
Only b
D.
Any of the mentioned
Answer» C. Only b
27.
To generate a rotation , we must specify
A.
Rotation angle θ
B.
Distances dx and dy
C.
Rotation distance
D.
All of the mentioned
Answer» A. Rotation angle θ
28.
The rotation axis that is perpendicular to the xy plane and passes through the pivot point is known as
A.
Rotation
B.
Translation
C.
Scaling
D.
Shearing
Answer» A. Rotation
29.
Positive values for the rotation angle θ defines
A.
Counter clockwise rotations about the end points
B.
Counter clockwise translation about the pivot point
C.
Counter clockwise rotations about the pivot point
D.
Negative direction
Answer» C. Counter clockwise rotations about the pivot point
30.
The original coordinates of the point in polar coordinates are
A.
X’=r cos (Ф +ϴ) and Y’=r cos (Ф +ϴ)
B.
X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
C.
X’=r cos (Ф -ϴ) and Y’=r cos (Ф -ϴ)
D.
X’=r cos (Ф +ϴ) and Y’=r sin (Ф -ϴ)
Answer» B. X’=r cos (Ф +ϴ) and Y’=r sin (Ф +ϴ)
31.
From the following, which one will require 4 matrices to multiply to get the final position?
A.
Rotation about the origin
B.
Rotation about an arbitrary Point
C.
Rotation about an arbitrary line
D.
Scaling about the origin
Answer» B. Rotation about an arbitrary Point
32.
Rotation is simply———object w.r.t origin or centre point.
A.
Turn
B.
Shift
C.
Compression
D.
Drag element
Answer» A. Turn
33.
A line AB with end point A (2,3) & B (7,8) is to be rotated about origin by 300 in clockwise direction. Determine the coordinates of end points S of rotated line.
A.
(3.232, 2.598)
B.
(5.232, 3.598)
C.
(3.232, 1.298)
D.
(3.232, 1.598)
Answer» D. (3.232, 1.598)
34.
An ellipse can also be rotated about its center coordinates by rotating
A.
End points
B.
Major and minor axes
C.
Only a
D.
None
Answer» B. Major and minor axes
35.
The transformation that is used to alter the size of an object is
A.
Scaling
B.
Rotation
C.
Translation
D.
Reflection
Answer» A. Scaling
36.
Scaling of a polygon is done by computing
A.
The product of (x, y) of each vertex
B.
(x, y) of end points
C.
Center coordinates
D.
Only a
Answer» D. Only a
37.
We control the location of a scaled object by choosing the position is known as…………………………….
A.
Pivot point
B.
Fixed point
C.
Differential scaling
D.
Uniform scaling
Answer» B. Fixed point
38.
If the scaling factors values sx and sy are assigned to the same value then………
A.
Uniform rotation is produced
B.
Uniform scaling is produced
C.
Scaling cannot be done
D.
Scaling can be done or cannot be done
Answer» B. Uniform scaling is produced
39.
If the scaling factors values Sx and Sy are assigned to unequal values then
A.
Uniform rotation is produced
B.
Uniform scaling is produced
C.
Differential scaling is produced
D.
Scaling cannot be done
Answer» C. Differential scaling is produced
40.
The objects transformed using the equation P’=S*P should be
A.
Scaled
B.
Repositioned
C.
Both a and b
D.
Neither a nor b
Answer» C. Both a and b
41.
If the scaling factors values Sx and Sy < 1 then
A.
It reduces the size of object
B.
It increases the size of object
C.
It stunts the shape of an object
D.
None
Answer» A. It reduces the size of object
42.
If the value of Sx=1 and Sy=1 then
A.
Reduce the size of object
B.
Distort the picture
C.
Produce an enlargement
D.
No change in the size of an object
Answer» D. No change in the size of an object
43.
The polygons are scaled by applying the following transformation.
A.
X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy)
B.
X’=x * Sx + Xf(1+Sx) & Y’=y * Sy + Yf(1+Sy
C.
X’=x * Sx + Xf(1-Sx) & Y’=y * Sy – Yf(1-Sy)
D.
X’=x * Sx * Xf(1-Sx) & Y’=y * Sy * Yf(1-Sy)
Answer» A. X’=x * Sx + Xf(1-Sx) & Y’=y * Sy + Yf(1-Sy)
44.
Reflection is a special case of rotation.
A.
True
B.
False
Answer» B. False
45.
If two pure reflections about a line passing through the origin are applied successively the result is
A.
Pure rotation
B.
Quarter rotation
C.
Half rotation
D.
True reflection
Answer» A. Pure rotation
46.
What is the determinant of the pure reflection matrix?
A.
1
B.
0
C.
-1
D.
2
Answer» C. -1
47.
Which of the following is NOT true? Image formed by reflection through a plane mirror is
A.
of same size
B.
same orientation
C.
is at same distance from the mirror
D.
virtual
Answer» B. same orientation
48.
Which of the following represents shearing?
A.
(x, y) → (x+shx, y+shy)
B.
(x, y) → (ax, by)
C.
(x, y) → (x cos(θ)+y sin(θ), -x sin(θ)+y cos(θ))
D.
(x, y) → (x+shy, y+shx)
Answer» D. (x, y) → (x+shy, y+shx)
49.
If a ‘3 x 3’ matrix shears in X direction, how many elements of it are ‘1’?
A.
2
B.
3
C.
6
D.
5
Answer» B. 3
50.
If a ‘3 x 3’ matrix shears in Y direction, how many elements of it are ‘0’?
A.
2
B.
3
C.
6
D.
5
Answer» D. 5
51.
Shearing is also termed as
A.
Selecting
B.
Sorting
C.
Scaling
D.
Skewing
Answer» D. Skewing
52.
Shearing and reflection are types of translation.
A.
True
B.
False
Answer» B. False
53.
Which of this is compulsory for 2D reflection?
A.
Reflection plane.
B.
Origin
C.
Reflection axis
D.
Co-ordinate axis.
Answer» C. Reflection axis
54.
Two successive translations are
A.
Multiplicative
B.
Inverse
C.
Subtractive
D.
Additive
Answer» D. Additive
55.
Two successive translations are commutative.
A.
True
B.
False
Answer» A. True
56.
General pivot point rotation can be expressed as
A.
T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ)
B.
T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)
C.
T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)
D.
T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)
Answer» B. T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)
57.
Which of the following is NOT correct (A, B and C are matrices)
A.
A∙B = B∙A
B.
A∙B∙C = (A∙B) ∙C = A∙ (B∙C)
C.
C(A+B) = C∙A + C∙B
D.
1 A = A 1
Answer» A. A∙B = B∙A
58.
Reflection about the line y=0, the axis, is accomplished with the transformation matrix with how many elements as ‘0’?
A.
8
B.
9
C.
4
D.
6
Answer» D. 6
59.
Which transformation distorts the shape of an object such that the transformed shape appears as if the object were composed of internal layers that had been caused to slide over each other?
A.
Rotation
B.
Scaling up
C.
Scaling down
D.
Shearing
Answer» D. Shearing
60.
Transpose of a column matrix is
A.
Zero matrix
B.
Identity matrix
C.
Row matrix
D.
Diagonal matrix
Answer» C. Row matrix
61.
Reversing the order in which a sequence of transformations is performed may affect the transformed position of an object.
A.
True
B.
False
Answer» A. True
62.
How many minimum numbers of zeros are there in ‘3 x 3’ triangular matrix?
A.
4
B.
3
C.
5
D.
6
Answer» B. 3
63.
The object space or the space in which the application model is defined is called
A.
World co-ordinate system
B.
Screen co-ordinate system
C.
World window
D.
Interface window
Answer» A. World co-ordinate system
64.
What is the name of the space in which the image is displayed?
A.
World co-ordinate system
B.
Screen co-ordinate system
C.
World window
D.
Interface window
Answer» B. Screen co-ordinate system
65.
What is the rectangle in the world defining the region that is to be displayed?
A.
World co-ordinate system
B.
Screen co-ordinate system
C.
World window
D.
Interface window
Answer» C. World window
66.
The window opened on the raster graphics screen in which the image will be displayed is called
A.
World co-ordinate system
B.
Screen co-ordinate system
C.
World window
D.
Interface window
Answer» D. Interface window
67.
The process of mapping a world window in World Coordinates to the Viewport is called Viewing transformation.
A.
True
B.
False
Answer» A. True
68.
Panning is a technique in which users can change the size of the area to be viewed in order to see more detail or less detail.
A.
True
B.
False
Answer» B. False
69.
Drawing of number of copies of the same image in rows and columns across the interface window so that they cover the entire window is called
A.
Roaming
B.
Panning
C.
Zooming
D.
Tiling
Answer» D. Tiling
70.
By changing the dimensions of the viewport, the and of the objects being displayed can be manipulated.
A.
Number of pixels and image quality
B.
X co-ordinate and Y co-ordinate
C.
Size and proportions
D.
All of these
Answer» C. Size and proportions
71.
Co-ordinates are ranging according to the screen resolution.
A.
True
B.
False
Answer» A. True
72.
Any convenient co-ordinate system or Cartesian co-ordinates which can be used to define the picture is called
A.
spherical co-ordinates
B.
vector co-ordinates
C.
viewport co-ordinates
D.
world co-ordinates
Answer» D. world co-ordinates
73.
The transformation of perspective projection must include, where d is the distance between the center of projection to the projection plane.
A.
D
B.
1/d
C.
-d
D.
-1/d
Answer» D. -1/d
74.
An area on a display device to which a window is mapped is called a………….
A.
Window
B.
Viewpoint
C.
Pixel
D.
None of the above
Answer» B. Viewpoint
75.
A Pixel is
A.
a computer program that draws picture
B.
A picture stored in secondary memory
C.
The smallest resolvable part of a picture
D.
All of the above
Answer» C. The smallest resolvable part of a picture
76.
A system that automates the drafting process with interactive computer graphics is called
A.
Computer Aided Engineering (CAE)
B.
Computer Aided Design (CAD)
C.
Computer Aided Manufacturing (CAM)
D.
Computer Aided Instruction (CAI)
Answer» B. Computer Aided Design (CAD)
77.
In which type of projection, actual dimensions and angles of objects and therefore shapes cannot be preserved?
A.
Orthographic
B.
Isometric
C.
Perspective
D.
None of the above
Answer» C. Perspective
78.
Coordinate of □ABCD is WCS are: lowermost corner A(2,2) & diagonal corner are C(8,6). W.r.t MCS. The coordinates of origin of WCS system are (5,4). If the axes of WCS are at 600 in CCW w.r.t. the axes of MCS. Find new vertices of point A in MCS.
A.
(4.268, 6.732)
B.
(5.268, 6.732)
C.
(4.268, 4.732)
D.
(6.268, 4.732)
Answer» A. (4.268, 6.732)
79.
A line AB with end points A (2, 1) & B (7, 6) is to be moved by 3 units in x-direction & 4 units in y-direction. Calculate new coordinates of points B.
A.
(10, 2)
B.
(2, 10)
C.
(10, 10)
D.
(10, 5)
Answer» C. (10, 10)
Chapter: Geometric Modeling
80.
QFor generating Coons patch we require
A.
A set of grid points on surface
B.
A set of control points
C.
Four bounding curves defining surface
D.
Two bounding curves and a set of grid control points
Answer» C. Four bounding curves defining surface
81.
In a 2-D CAD package, clockwise circular arc of radius, 5, specified from P1 (15,10) to P2 (10,15)will have its center at
A.
(10, 10)
B.
(15, 10)
C.
(15, 15)
D.
(10, 15)
Answer» A. (10, 10)
82.
In the following geometric modelling techniques which are not three-dimensional modelling?
A.
Wireframe modelling
B.
Drafting
C.
Surface modelling
D.
solid modelling
Answer» B. Drafting
83.
In the following three-dimensional modelling techniques. Which do not require much computer time and memory?
A.
Surface modelling
B.
Solid modelling
C.
Wireframe modelling
D.
All of the above
Answer» C. Wireframe modelling
84.
In the following geometric modelling techniques. which cannot be used for finite element analysis:
A.
Wireframe modelling
B.
Surface modelling
C.
Solid modeling
D.
none of the above
Answer» D. none of the above
85.
In the following geometric primitives. which is not a solid entity of CSG modelling:
A.
Box
B.
Cone
C.
Cylinder
D.
Circle
Answer» D. Circle
86.
Which of the following is not an analytical entity?
A.
Line
B.
Circle
C.
Spline
D.
Parabola
Answer» C. Spline
87.
Which of the following is not a synthetic entity?
A.
Hyperbola
B.
Bezier curve
C.
B-spline curve
D.
Cubic spline curve
Answer» A. Hyperbola
88.
Which one of the following does not belong to the family of conics?
A.
Parabola
B.
Ellipse
C.
Hyperbola
D.
Line
Answer» D. Line
89.
The number of tangents required to describe cubic splines is
A.
2
B.
1
C.
3
D.
4
Answer» B. 1
90.
The shape of Bezier curve is controlled by
A.
Control points
B.
Knots
C.
End points
D.
All the above
Answer» A. Control points
91.
The curve that follows a convex hull property is:
A.
Cubic spline
B.
B-spline
C.
Bezier curve
D.
Both (b) and (c)
Answer» B. B-spline
92.
The degree of the Bezier curve with n control points is
A.
n + 1
B.
n – 1
C.
n
D.
2n
Answer» A. n + 1
93.
The degree of the B-spline with varying knot vectors
A.
Increases with knot vectors
B.
Decreases with knot vectors
C.
Remains constant
D.
none of the above
Answer» A. Increases with knot vectors
94.
The number of non-coincidental points required to define the simplest surface are
A.
4
B.
3
C.
2
D.
5
Answer» B. 3
95.
The tensor product technique constraints surfaces by two curves.
A.
2
B.
1
C.
3
D.
4
Answer» B. 1
96.
In the bezier curve, the curve is always to first and last segments of the polygon
A.
normal
B.
parallel
C.
tangent
D.
none of the above
Answer» C. tangent
97.
The unit vector in the direction of the line is defined as .
A.
tangent vector+length of the line
B.
tangent vector-length of the line
C.
tangent vector/length of the line
D.
length of the line/tangent vector
Answer» C. tangent vector/length of the line
98.
From the following, which is an axisymmetric surface?
A.
Plane Surface
B.
Ruled Surface
C.
Surface of Revolution
D.
All of the above
Answer» C. Surface of Revolution
99.
curves allow local control of the curve
A.
Analytical
B.
Hermite cubic spline
C.
Beizer
D.
B-Spline
Answer» D. B-Spline
100.
To determine the coefficients of the equation – two end-points and the two tangent vectors. This statement is true for which of the following
A.
B-spline curve
B.
Hermite Cubic Spline Curve
C.
Beizer curve
D.
none of the above
Answer» B. Hermite Cubic Spline Curve
101.
In synthetic curves, second-order continuity yields
A.
a position continuous curve
B.
a slope continuous curve
C.
a curvature continuous curve
D.
none of the above
Answer» C. a curvature continuous curve
102.
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to
A.
the major diameter
B.
the minor diameter
C.
semi major diameter
D.
semi-minor diameter
Answer» A. the major diameter
103.
When a smooth curve is approximated through the data points, then the curve is known as
A.
interpolant curve
B.
approximation curve
C.
pitch curve
D.
data curve
Answer» B. approximation curve
104.
In Beizer Curve, the curve follows
A.
the control points
B.
the shape of the defining polygon
C.
the defining points
D.
none of the above
Answer» B. the shape of the defining polygon
105.
In Beizer Curve, the flexibility of the shape would increase with
A.
decrease in the number of vertices
B.
increase in the number of vertices
C.
decrease in control points
D.
none of the above
Answer» B. increase in the number of vertices
106.
The number of control points can be added or subtracted in .
A.
Bezier curve
B.
B-spline curve
C.
Cubic spline curve
D.
all of the above
Answer» B. B-spline curve
107.
The degree of the curve is independent of the number of control points in .
A.
Hermite cubic spline curve
B.
Bezier curve
C.
B-spline curve
D.
Hyperbola
Answer» C. B-spline curve
108.
The is used to create a surface using curves that form closed boundaries.
A.
ruled Surface
B.
plane Surface
C.
coons patch
D.
surface of Revolution
Answer» C. coons patch
109.
B-rep and C-Rep are the methods of
A.
solid modeling
B.
surface modeling
C.
wireframe modeling
D.
2D modeling
Answer» A. solid modeling
110.
Which kind of model can store information about geometry
A.
Solid model
B.
Surface model
C.
Wireframe model
D.
none of the above
Answer» A. Solid model
111.
From the following, which method is also called as the Building Block Approach?
A.
Cellular Decomposition
B.
Spatial Occupancy Enumeration
C.
Generalized Sweeps
D.
Constructive Solid Geometry
Answer» D. Constructive Solid Geometry
112.
Structuring and combining the primitives of the solid model in the graphics database, is achieved by the use of…..
A.
FEA
B.
transformations
C.
boolean operations
D.
none of the above
Answer» C. boolean operations
113.
The data representation of CSG objects is represented by
A.
a binary tree
B.
a boolean operation
C.
a primitive
D.
none of the above
Answer» A. a binary tree
114.
is an extension of the wireframe model with additional face information added.
A.
CSG
B.
B-rep
C.
Loft
D.
none of the above
Answer» B. B-rep
115.
For 3D modeling of automobile body styling, which of the following is a preferred technique?
A.
Constructive Solid Geometry
B.
Pure Primitive Instancing
C.
Boundary Representation
D.
Spatial Occupancy Enumeration
Answer» C. Boundary Representation
116.
Which of the following uses a number of two-dimensional profiles for generating a three-dimensional object?
A.
Tweaking
B.
Lofting
C.
Filleting
D.
none of the above
Answer» B. Lofting
117.
To create a hollow part, which of the following command would be most efficient?
A.
Extrude
B.
Sweep
C.
Shell
D.
Revolve
Answer» C. Shell
118.
The curve is defined as the locus of a point moving with _ degree of freedom
A.
0
B.
1
C.
2
D.
3
Answer» B. 1
119.
Write parametric equation of line having end points P1(3,5,8) and P2 (6,4,3).
A.
[3 5 8]+u[3 -1 -5]
B.
[3 5 8]+u[3 1 5]
C.
[3 8 5]+u[3 -1 -5]
D.
[3 5 8]+u[-3 1 5]
Answer» A. [3 5 8]+u[3 -1 -5]
120.
Find the tangent vector of line having end points P1(3,5,8) and P2 (6,4,3)
A.
3i+j-5k
B.
3i-j-5k
C.
3i-j+5k
D.
-3i-j-5k
Answer» B. 3i-j-5k
121.
Find coordinates of points on line having end points P1(3,5,8) and P2 (6,4,3) at u=0.25
A.
[3.75 4.25 6.25]
B.
[3.25 4.25 6.25]
C.
[3.75 4.75 6.75]
D.
[4.25 3.75 6.25]
Answer» C. [3.75 4.75 6.75]
122.
Two lines are parallel when
A.
P1 X P2=0
B.
P1 . P2=0
C.
P1 = P2
D.
P1+ P2=0
Answer» A. P1 X P2=0
123.
Two lines L1 and L2 having Parametric equations are P1=[3 4 7]+u[2 2 -6] and P2=[1 5 -2]+u[1 4 2]. Tangent vector for line L1
A.
2i+2j-6k
B.
2i+2j+6k
C.
2i-2j-6k
D.
6-2j-2k
Answer» A. 2i+2j-6k
124.
For Q 45, Tangent vector for line L2
A.
i+4j-k
B.
2i+4j+k
C.
i-4j-2k
D.
i+4j+2k
Answer» D. i+4j+2k
125.
For Q 45, Lines are perpendicular?
A.
True
B.
False
C.
D
Answer» B. False
126.
Parametric equation for circle
A.
X=x+Rcosu; Y=y+Rsinu; Z=z
B.
X=Rcosu; Y=Rsinu; Z=z
C.
X=x+Rsinu; Y=y+Rcosu; Z=z
D.
X=Rsinu; Y=y+Rcosu; Z=z
Answer» A. X=x+Rcosu; Y=y+Rsinu; Z=z
127.
Center point of circle
A.
[x1+x2]/2; [y1+y2]/2; [z1+z2]/2
B.
[x1-x2]/2; [y1-y2]/2; [z1-z2]/2
C.
[x1-x2]; [y1-y2]; [z1-z2]
D.
[x2-x1]; [y2-y1]; [z2-z1]
Answer» A. [x1+x2]/2; [y1+y2]/2; [z1+z2]/2
128.
A circle is represented by center point [5,5] and radius 6 units. Find the parametric equation of circle and determine the various points on circle in first quadrant if increment in angle by 45o
A.
9.24,9.24
B.
9.42,9.42
C.
9,9
D.
11,5
Answer» A. 9.24,9.24
129.
A circle is passing through two end points A[6,4] and B[10,10]. Find center point of circle
A.
7,8
B.
8,8
C.
8,7
D.
7,7
Answer» C. 8,7
130.
For Q 51, find radius of circle
A.
3
B.
3.6
C.
4
D.
3.5
Answer» B. 3.6
131.
For Q 51, find coordinates of point on circle at u=0
A.
11.6, 7
B.
7, 11
C.
11, 7
D.
11.5, 7.5
Answer» A. 11.6, 7
132.
Find parametric equation for X-coordinates of hermite cubic spline curve having end points P0[4,4]; P1[8,5]
A.
-5u3+8u2+u+1
B.
5u3+8u2+u+1
C.
8u3-5u2-u+1
D.
8u3+5u2+u+1
Answer» A. -5u3+8u2+u+1
133.
Find parametric equation for Y-coordinates of Hermite cubic spline curve having end points P0[4,4]; P1[8,5]
A.
2u3-3u2+2u+4
B.
3u3-2u2-2u-4
C.
2u3-3u2-2u-4
D.
2u3+3u2+2u+4
Answer» A. 2u3-3u2+2u+4
134.
C0 continuity refers to
A.
Common tangent
B.
Common curvature
C.
Common point
D.
Common normal
Answer» C. Common point
135.
C‘ continuity refers to
A.
Common tangent
B.
Common curvature
C.
Common point
D.
Common normal
Answer» B. Common curvature
136.
C” continuity refers to
A.
Common tangent
B.
Common curvature
C.
Common point
D.
Common normal
Answer» A. Common tangent
137.
Which of the following is not a method to describe a curve mathematically?
A.
Explicit form
B.
Laplace form
C.
Implicit form
D.
Parametric form
Answer» B. Laplace form
138.
When the curve passes through all the data points, then the curve is known as
A.
approximation curve
B.
pitch curve
C.
data curve
D.
interpolant curve
Answer» D. interpolant curve
139.
When a smooth curve is approximated through the data points, then the curve is known as
A.
approximation curve
B.
pitch curve
C.
data curve
D.
interpolant curve
Answer» A. approximation curve
140.
Synthetic curve pass through defined data points and thus can be represented by
A.
polynomial equations
B.
exponential equations
C.
partial differential equations
D.
differential equations
Answer» A. polynomial equations
141.
Mathematically, the ellipse is a curve generated by a point moving in space such that at any position the sum of its distances from two fixed points (foci) is constant and equal to
A.
the major diameter
B.
the minor diameter
C.
semi major diameter
D.
semi-minor diameter
Answer» A. the major diameter
142.
The parabola is defined mathematically as a curve generated by a point that moves such that its distance from the focus is always__________the distance to the directrix
A.
larger than
B.
smaller than
C.
equal to
D.
none of the above
Answer» C. equal to
143.
In synthetic curves, zero-order continuity yields
A.
a position continuous curve
B.
a slope continuous curve
C.
a curvature continuous curve
D.
none of the above
Answer» A. a position continuous curve
144.
In synthetic curves, first-order continuity yields
A.
a position continuous curve
B.
a slope continuous curve
C.
a curvature continuous curve
D.
none of the above
Answer» B. a slope continuous curve
145.
The B-spline curve has a
A.
first-order continuity
B.
second-order continuity
C.
zero-order continuity
D.
none of the above
Answer» B. second-order continuity
146.
To determine the coefficients of the equation – two end-points and the two tangent vectors. This statement is true for which of the following?
A.
B-spline curve
B.
Hermite Cubic Spline Curve
C.
Beizer curve
D.
none of the above
Answer» B. Hermite Cubic Spline Curve
147.
The Bezier curve is smoother than the Hermite cubic spline because it has _________ order derivatives.
A.
lower
B.
higher
C.
lower and higher both
D.
none of the above
Answer» B. higher
148.
In the bezier curve, the curve is always________to first and last segments of the polygon
A.
normal
B.
parallel
C.
tangent
D.
none of the above
Answer» C. tangent
149.
________curves allow local control of the curve.
A.
Analytical
B.
Hermite cubic spline
C.
Beizer
D.
B-Spline
Answer» D. B-Spline
150.
In Beizer Curve, the curve follows __________
A.
the control points
B.
the shape of the defining polygon
C.
the defining points
D.
none of the above
Answer» B. the shape of the defining polygon
151.
In Beizer Curve, the flexibility of the shape would increase with _______ of the polygon.
A.
decrease in the number of vertices
B.
increase in the number of vertices
C.
decrease in control points
D.
none of the above
Answer» B. increase in the number of vertices
152.
The degree of the curve is independent of the number of control points in _____
A.
Hermite cubic spline curve
B.
Bezier curve
C.
B-spline curve
D.
Hyperbola
Answer» C. B-spline curve
153.
In modeling of a tabulated cylinder, the plane of the curve is _______
A.
along the curve
B.
normal to the curve
C.
along the axis of the cylinder
D.
perpendicular to the axis of the cylinder
Answer» D. perpendicular to the axis of the cylinder
154.
The ___________ is used to create a surface using curves that form closed boundaries
A.
ruled Surface
B.
plane Surface
C.
coons patch
D.
surface of Revolution
Answer» C. coons patch
155.
________ command gives an array of object in 3D modeling
A.
Extrude
B.
Revolve
C.
Pattern
D.
All of the above
Answer» C. Pattern
156.
To create a hollow part, which of the following command would be most efficient
A.
Extrude
B.
Sweep
C.
Shell
D.
Revolve
Answer» C. Shell
157.
A cylinder can be created by drawing a rectangular shape using the ________ tool.
A.
revolve
B.
sweep
C.
extrude
D.
all of the above
Answer» A. revolve
158.
For 3D modeling of automobile body styling, which of the following is a preferred technique
A.
Constructive Solid Geometry
B.
Pure Primitive Instancing
C.
Boundary Representation
D.
Spatial Occupancy Enumeration
Answer» C. Boundary Representation
Chapter: FEA
159.
What is the full form of FEA
A.
Fracture Element Analysis
B.
Finite Element Analysis
C.
Future Electronic Analysis
D.
None of the above
Answer» B. Finite Element Analysis
160.
From the following, which type of element is not two dimensional?
A.
Tetrahedron
B.
Quadrilateral
C.
Parallelogram
D.
Rectangle
Answer» A. Tetrahedron
161.
For truss analysis, which type of elements is used?
A.
Triangle
B.
Parallelogram
C.
Rectangle
D.
Bar
Answer» D. Bar
162.
To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that are called
A.
static elements
B.
dynamic elements
C.
infinite elements
D.
finite elements
Answer» D. finite elements
163.
The art of subdividing the structure into a convenient number of smaller elements is known as
A.
discretization
B.
assemblage
C.
continuum
D.
traction
Answer» A. discretization
164.
The sum of the shape function is equal to
A.
0
B.
0.5
C.
1
D.
2
Answer» C. 1
165.
A triangular plane stress element has how many degrees of freedom?
A.
3
B.
4
C.
5
D.
6
Answer» D. 6
166.
Number of displacement polynomials used for an element depends on .
A.
nature of element
B.
type of an element
C.
degrees of freedom
D.
nodes
Answer» C. degrees of freedom
167.
On gathering stiffness and loads, the system of equations is given by
A.
KQ=F
B.
KQ≠F
C.
K=QF
D.
K≠QF
Answer» A. KQ=F
168.
The finite element method is mostly used in the field of
A.
structural mechanics
B.
classical mechanics
C.
applied mechanics
D.
engineering mechanics
Answer» D. engineering mechanics
169.
In FEA, the sub domains are called as .
A.
particles
B.
molecules
C.
elements
D.
none
Answer» C. elements
170.
The numbers of node for 1 D element are
A.
1
B.
2
C.
3
D.
0
Answer» B. 2
171.
Finite element analysis deals with .
A.
approximate numerical solution
B.
non-boundary value problems
C.
Laplace equations
D.
All of the above
Answer» A. approximate numerical solution
172.
Stiffness matrix depends on
A.
material
B.
geometry
C.
both material and geometry
D.
none of the above
Answer» C. both material and geometry
173.
Example of 2-D Element is .
A.
bar
B.
triangle
C.
hexahedron
D.
tetrahedron
Answer» B. triangle
174.
For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed is having an order of
A.
2*2
B.
3*3
C.
4*4
D.
6*6
Answer» B. 3*3
175.
To find the nodal displacements in all parts of the element, are used.
A.
shape function
B.
node function
C.
element function
D.
coordinate function
Answer» A. shape function
176.
The nature of loading at various locations and other surfaces conditions called
A.
friction
B.
traction
C.
boundary condition
D.
surfacing
Answer» C. boundary condition
177.
The truss element can resist only
A.
surface force
B.
axial force
C.
point load
D.
none of the above
Answer» B. axial force
178.
The truss element can deform only in the
A.
vertical direction
B.
horizontal direction
C.
inclined direction
D.
axial direction
Answer» D. axial direction
179.
Example for one – Dimensional element is .
A.
triangular element
B.
brick element
C.
truss element
D.
axisymmetric element
Answer» C. truss element
180.
The determinant of an element stiffness matrix is always
A.
3
B.
2
C.
1
D.
0
Answer» D. 0
181.
How many nodes are there in a 3-D brick element?
A.
3
B.
6
C.
8
D.
9
Answer» C. 8
182.
From below, choose the condition for the axisymmetric element.
A.
Symmetric about axis
B.
Boundary conditions are symmetric about an axis
C.
Loading conditions are symmetric about an axis
D.
All the above
Answer» D. All the above
183.
Axis-Symmetric element is Element
A.
1D
B.
2D
C.
3D
D.
4D
Answer» B. 2D
184.
is/are the phase/s of finite element method
A.
Pre-processing
B.
Solution
C.
Post Processing
D.
None
Answer» C. Post Processing
185.
The minimum number of dimensions are required to define the position of a point in space is .
A.
3
B.
4
C.
1
D.
2
Answer» A. 3
186.
The finite element methods can be applied in ———areas.
A.
thermal
B.
soil and rock mechanics
C.
vibration
D.
all of the above
Answer» D. all of the above
187.
If the structure is more complex in order to simplify the model, we need to subdivide the structure into substructures. These substructures are termed as .
A.
elements
B.
modules
C.
links
D.
models
Answer» B. modules
188.
Which of the following is not a method for calculation of the stiffness matrix?
A.
The minimum potential energy principle
B.
Galerkin’s principle
C.
Weighted residual method
D.
Inverse matrix method
Answer» D. Inverse matrix method
189.
is defined as the ratio of the largest dimension of the element to the smallest dimension.
A.
Element depth ratio
B.
Mode shape ratio
C.
Aspect ratio
D.
None of the above
Answer» C. Aspect ratio
190.
are used to express the geometry or shape of the element
A.
Mode shapes
B.
Shape functions
C.
Natural curves
D.
None of the above
Answer» B. Shape functions
191.
When a thin plate is subjected to loading in its own plane only, the condition is called _
A.
plane stress
B.
plane strain
C.
zero stress
D.
zero strain
Answer» A. plane stress
192.
The characteristic of the shape function is
A.
the shape function has a unit value at one nodal point and zero value at the other nodes
B.
the sum of the shape function is equal to one
C.
both a & b
D.
None of the above
Answer» C. both a & b
193.
The points in the entire structure are defined using the coordinates system is known as
A.
local coordinates system
B.
natural coordinates system
C.
global coordinate system
D.
none of the above
Answer» C. global coordinate system
194.
The applications of the Finite Element Method in two-dimensional analyses are .
A.
stretching of plates
B.
gravity of dams
C.
axisymmetric shells
D.
all of the above
Answer» C. axisymmetric shells
195.
If the body is in a state of equilibrium then the energy is minimum. This statement is considered in .
A.
inverse matrix method
B.
weighted residual method
C.
Galerkin’s principle
D.
the minimum potential energy principle
Answer» D. the minimum potential energy principle
196.
Which of the following is true for the stiffness matrix (K)?
A.
K is a banded matrix
B.
K is un-symmetric
C.
K is an un-banded matrix
D.
none of the above
Answer» A. K is a banded matrix
197.
The actual thickness of plane strain element is .
A.
very large
B.
very small
C.
assumed by software
D.
any of the above
Answer» A. very large
198.
Which of the following is not an FEA package?
A.
ANSYS
B.
Nastran
C.
Abaqus
D.
AutoCAD
Answer» D. AutoCAD
199.
Which of the following module of FEA is used to determine natural frequency?
A.
Static analysis
B.
Thermal analysis
C.
Modal analysis
D.
All of the above
Answer» C. Modal analysis
200.
For thermal analysis, the field variable is
A.
stress
B.
strain
C.
displacement
D.
Temperature
Answer» D. Temperature
201.
In FEA of a fluid mechanics problem, we need to find .
A.
stress distribution
B.
heat flux distribution
C.
pressure distribution
D.
all of the above
Answer» C. pressure distribution
202.
Crack propagation problems come under category.
A.
steady-state problems
B.
eigenvalue problems
C.
transient problems
D.
any of the above
Answer» C. transient problems
203.
In penalty approach, rigid support is considered as a spring having stiffness.
A.
zero
B.
very small
C.
very large
D.
infinite
Answer» D. infinite
204.
How many nodes are there in a tetrahedron element?
A.
3
B.
4
C.
5
D.
6
Answer» B. 4
205.
How many nodes are there in a hexahedron element?
A.
4
B.
6
C.
8
D.
10
Answer» C. 8
206.
How many nodes are there in a tetrahedron with curved sides element?
A.
6
B.
8
C.
10
D.
12
Answer» C. 10
207.
If the size of the elements is small, the final solution is expected to be accurate.
A.
more
B.
less
C.
depends on other factors
D.
can’t say
Answer» A. more
208.
In truss analysis, the reactions can be found by using the equation .
A.
R=KQ+F
B.
R=KQ-F
C.
R=K+QF
D.
R=K-QF
Answer» B. R=KQ-F
Chapter: CAM
209.
CAD/CAM is the relationship between
A.
science and engineering
B.
manufacturing and marketing
C.
design and manufacturing
D.
design and marketing
Answer» C. design and manufacturing
210.
Which two disciplines are tied by a common database?
A.
documentation and geometric modeling
B.
CAD and CAM
C.
drafting and documentation
D.
none of the mentioned
Answer» B. CAD and CAM
211.
The term that is used for geometric modelling like solid modelling, wire frame modelling and drafting is known as
A.
software package
B.
operating system
C.
application software
D.
none of the mentioned
Answer» A. software package
212.
The software that is used to control the computer’s work flow, organize its data and perform housekeeping functions is known as
A.
operating software
B.
graphics software
C.
application software
D.
programming software
Answer» A. operating software
213.
During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 the type of tool motion will be
A.
circular Interpolation – clockwise
B.
circular Interpolation – counter clockwise
C.
linear Interpolation
D.
rapid feed
Answer» A. circular Interpolation – clockwise
214.
n an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) along a circular path with centre at (5, 2). Before starting the operation, the tool is at (5, 4). The G and N codes for this motion are
A.
N010 GO3 X7.0 Y2.0 I5.0 J2.0
B.
N010 GO2 X7.0 Y2.0 I5.0 J2.0
C.
N010 GO1 X7.0 Y2.0 I5.0 J2.0
D.
N010 GOO X7.0 Y2.0 I5.0 J2.0
Answer» B. N010 GO2 X7.0 Y2.0 I5.0 J2.0
215.
The tool of an NC machine has to move along a circular arc from (5, 5) to (10, 10) while performing an operation. The centre of the arc is at (10, 5). Which one of the following NC tool path command performs the above mentioned operation?
A.
N010 GO2 X10 Y10 X5 Y5 R5
B.
N010 GO3 X10 Y10 X5 Y5 R5
C.
N010 GO1 X5 Y5 X10 Y10 R5
D.
N010 GO2 X5 Y5 X10 Y10 R5
Answer» A. N010 GO2 X10 Y10 X5 Y5 R5
216.
Match the following: NC code Definition P. M05 1. Absolute coordinate system Q. G01 2. Dwell R. G04 3. Spindle stop S. G09 4. Linear interpolation
A.
P-2, Q-3, R-4, S-1
B.
P-3, Q-4, R-1, S-2
C.
P-3, Q-4, R-2, S-1
D.
P-4, Q-3, R-2, S-1
Answer» C. P-3, Q-4, R-2, S-1
217.
In a CNC program block, N02 GO2 G91 X40 Z40……, GO2 and G91 refer to
A.
circular interpolation in counter clockwise direction and incremental dimension
B.
circular interpolation in counter clockwise direction and absolute dimension
C.
circular interpolation in clockwise direction and incremental dimension
D.
circular interpolation in clockwise direction and absolute dimension
Answer» C. circular interpolation in clockwise direction and incremental dimension
218.
Numerical control
A.
applies only to milling machines
B.
is a method for producing exact number of parts per hour
C.
is a method for controlling by means of set of instructions
D.
None of the mentioned
Answer» C. is a method for controlling by means of set of instructions
219.
Computer will perform the data processing functions in
A.
NC
B.
CNC
C.
DNC
D.
None of the mentioned
Answer» B. CNC
220.
Control loop unit of M.C.U is always
A.
a hardware unit
B.
a software unit
C.
a control unit
D.
none of the mentioned
Answer» A. a hardware unit
221.
The repeatability of NC machine depends on
A.
control loop errors
B.
mechanical errors
C.
electrical errors
D.
none of the mentioned
Answer» B. mechanical errors
222.
Rotation about Z-axis is called………….
A.
a-axis
B.
b-axis
C.
c-axis
D.
none of the mentioned
Answer» C. c-axis
223.
Rotation of spindle is designated by one of the following axis:
A.
a-axis
B.
b-axis
C.
c-axis
D.
none of the mentioned
Answer» D. none of the mentioned
224.
he linking of computer with a communication system is called………..
A.
networking
B.
pairing
C.
interlocking
D.
assembling
Answer» A. networking
225.
The process of putting data into a storage location is called
A.
reading
B.
writing
C.
controlling
D.
hand shaking
Answer» B. writing
226.
The process of copying data from a memory location is called
A.
reading
B.
writing
C.
controlling
D.
hand shaking
Answer» A. reading
227.
CNC machining centres do not include operations like
A.
milling
B.
boring
C.
welding
D.
tapping
Answer» C. welding
228.
Feed is measured in units of
A.
length/revolution
B.
degree/revolution
C.
length
D.
velocity
Answer» A. length/revolution
229.
he depth that the tool is plunged into the surface is called as
A.
feed
B.
depth of cut
C.
depth of tool
D.
working depth
Answer» B. depth of cut
230.
In CNC systems multiple microprocessors and programmable logic controllers work
A.
in parallel
B.
in series
C.
one after the other
D.
for 80% of the total machining time
Answer» A. in parallel
231.
Which of the following is not the advantage of CNC machines?
A.
Higher flexibility
B.
Improved quality
C.
Reduced scrap rate
D.
Improved strength of the components
Answer» D. Improved strength of the components
232.
In how many ways CNC machine tool systems can be classified?
A.
2
B.
3
C.
4
D.
5
Answer» B. 3
233.
Point-to-point systems are used for
A.
reaming
B.
parting
C.
grooving
D.
facing
Answer» A. reaming
234.
In part programming, interpolation is used for obtaining trajectory.
A.
helicoidal
B.
pentagonal
C.
triangular
D.
zig-zag
Answer» A. helicoidal
235.
For CNC machining skilled part programmers are needed.
A.
True
B.
False
Answer» A. True
236.
An absolute NC system is one in which all position coordinates are referred to one fixed origin called the zero point.
A.
True
B.
False
Answer» A. True
237.
In , the coordinates are mentioned in the program with respect to one reference point
A.
Incremental System
B.
Absolute System
C.
Datum System
D.
Screen Coordinates System
Answer» B. Absolute System
238.
……… is a group of words or coded instruction for the NC/CNC system to execute a particular movement.
A.
Sequence
B.
Address
C.
Code
D.
Block
Answer» D. Block
239.
Each coded instruction in a set of instructions is called as……
A.
Words
B.
Alphabet
C.
Numbers
D.
Format
Answer» A. Words
240.
In , the coordinates are mentioned in the program with respect to one Previous point.
A.
Incremental System
B.
Absolute System
C.
Datum System
D.
Screen Coordinates System
Answer» A. Incremental System
241.
G00 Preparatory code is used for
A.
Rapid Travel Execution
B.
Rapid Travel Positioning
C.
Rapid Travel sequencing
D.
Rapid clockwise interpolation
Answer» B. Rapid Travel Positioning
242.
In a CNC program block, N05 GO1 G91 G33 X20 Z-40……, G33 refer to
A.
Peck Drilling
B.
Counter Boring
C.
Thread Cutting
D.
Grooving
Answer» C. Thread Cutting
243.
In CNC Program M03 is refer to……
A.
Spindle ON in Clockwise rotation
B.
Spindle ON in Counter Clockwise rotation
C.
Spindle OFF in Clockwise rotation
D.
Spindle OFF in Counter Clockwise rotation
Answer» A. Spindle ON in Clockwise rotation
244.
In CNC Program M98 is refer to……
A.
CANCEL Subroutine
B.
Call Sub-Program
C.
Call Subroutine
D.
CANCEL Sub-Program
Answer» B. Call Sub-Program
245.
In a CNC program block, N05 GO1 G91 G33 X20 Z-40 K5……, K refer to
A.
Depth of cut
B.
Pitch
C.
Multiple Threading Cycle
D.
Feed
Answer» B. Pitch
246.
A CNC Lathe is usually a machine tool with Z axes is…..
A.
Line Joining origin and vertical movement
B.
Line perpendicular to Y axis
C.
Both A & B
D.
Line Joining Chuck centre & tail stock centre
Answer» D. Line Joining Chuck centre & tail stock centre
247.
B rotational axis is rotation about Axis.
A.
X
B.
Y
C.
Z
D.
C
Answer» A. X
248.
Secondary Linear Axes U,V & W are ……… to X,Y & Z-axis.
A.
Perpendicular
B.
Parallel
C.
Rotational
D.
All of the above
Answer» B. Parallel
249.
……… are also called as parametric subroutines
A.
Micro
B.
Macro
C.
Sub Macro
D.
Sub Micro
Answer» B. Macro
250.
In the lathe it is the peripheral speed of the work piece cutting speed of tool is expressed in m/min, V is
A.
= 𝜋𝐷𝑁/1000
B.
= 𝜋𝐷/1000
C.
= 𝐷𝑁/1000
D.
=𝜋𝐷𝑁/10
Answer» A. = 𝜋𝐷𝑁/1000
251.
Incremental dimension in circular interpolation in X-axis is denoted by
A.
J
B.
I
C.
K
D.
None of the above
Answer» B. I
252.
Repetitive CNC machine operations conveniently performing and execute with one command instead of programming of series of individual move called …..
A.
Common Cycle
B.
Incremental Programming
C.
Canned Cycle
D.
None of the above
Answer» C. Canned Cycle
253.
In CNC programming …….. is commonly used canned cycle for Stock removal cycle
A.
G71
B.
G72
C.
G73
D.
G74
Answer» D. G74
254.
……… is the origin of the coordinate system which is defined by manufacturer they cannot be changed
A.
Blocking Point
B.
machine Zero Point
C.
Start Point
D.
Program Zero point
Answer» B. machine Zero Point
255.
To indicate the position of the workpiece ly & easily machine zero pint should be displaced to another point on the workpiece called…
A.
Workpiece zero Point
B.
machine Zero Point
C.
Start Point
D.
Program Zero point
Answer» A. Workpiece zero Point
256.
XY Plane Selection in CNC machining is done by…..
A.
G16
B.
G17
C.
G18
D.
G19
Answer» B. G17
257.
The distance of a given tool tip from the surface of workpiece is known as…..
A.
Tool length
B.
Tool length offset H
C.
Cutter radius
D.
Compensation
Answer» B. Tool length offset H
258.
In CNC machining tool radius compensation turning the left mode ON programming contour done by
A.
G40
B.
G41
C.
G42
D.
G43
Answer» B. G41
259.
Maximum spindle speed limitation code in CNC Machine
A.
G90
B.
G91
C.
G92
D.
G93
Answer» C. G92
260.
Which of the following code is used to return to a reference point?
A.
G23
B.
G28
C.
G14
D.
G19
Answer» B. G28
261.
The following code will produce dwell for a specified time…
A.
G18
B.
G65
C.
G45
D.
G04
Answer» D. G04
262.
Which of the following code will give point to point movement?
A.
G00
B.
G01
C.
G56
D.
G94
Answer» A. G00
263.
Which rule implement for axes Nomenclature?
A.
Left-hand rule
B.
Right-Hand Rule
C.
Thumb Rule
D.
None of the above
Answer» B. Right-Hand Rule
264.
Automatic tool change in CNC Machine code
A.
M05
B.
M06
C.
M07
D.
M09
Answer» B. M06
265.
Full form of MCU is…………
A.
Machine computer unit
B.
Machine control universal
C.
Machine control unit
D.
None of the above
Answer» C. Machine control unit
266.
The machine tool, in which calculation and setting of the operating conditions like depth of cut, feed, speed are done during the machining by the control system itself, is called
A.
Computer Numerical Control System
B.
Direct Numerical Control System
C.
Machining Center System
D.
Adaptive Control System
Answer» D. Adaptive Control System
267.
In which machine we get feedback?
A.
Lathe machine
B.
NC machine
C.
CNC machine
D.
Milling machine
Answer» C. CNC machine
268.
Which machine’s spindle is used to horizontal work?
A.
UMC
B.
VMC
C.
HMC
D.
DNC
Answer» C. HMC
269.
What is the full form of ATC?
A.
Automatic tool changer
B.
Arranged tool changer
C.
Automatic tool controller
D.
Arranged tool controller
Answer» A. Automatic tool changer
270.
In which system we get feedback?
A.
Open-loop system
B.
Machine control system
C.
Closed-loop system
D.
None of the above
Answer» C. Closed-loop system
271.
How many maximum tools can ATC hold?
A.
60
B.
80
C.
90
D.
100
Answer» B. 80
272.
In the CNC machine which device used to hold the workpiece?
A.
Automatic pallet changer
B.
Automatic work part positioner
C.
A & B both
D.
None of the above
Answer» C. A & B both
273.
In a CAD package, mirror image of a 2D point P (5, 10) is to be obtained about a line which passes through the origin and makes an angle of 45° counterclockwise with the X-axis. The coordinates of the transformed point will be
A.
(7.5, 5)
B.
(10, 5)
C.
(7.5, -5)
D.
(10, -5)
Answer» B. (10, 5)
274.
NC contouring is an example of
A.
Continuous path positioning
B.
Point-to-point positioning
C.
Absolute positioning
D.
Incremental positioning
Answer» A. Continuous path positioning
275.
With reference to NC machines, which of the following statements is wrong
A.
Both closed-loop and open-loop control systems are used
B.
Paper tapes, floppy tapes and cassettes are used for data storage
C.
Digitizers may be used as interactive input devices
D.
Post processor is an item of hardware
Answer» C. Digitizers may be used as interactive input devices
276.
In finish machining of an island on a casting with CNC milling machine, an end mill with 10 mm diameter is employed. The corner points of the island are represented by (0, 0), (0, 30), (50, 30) and (50, 0). By applying cutter radius right compensation, the trajectory of the cutter will be
A.
(-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5)
B.
(0,-5), (55,-5), (55, 35), (-5, 35), (-5,-5)
C.
(5, 5), (5, 25), (45, 25), (45, 5), (5, 5)
D.
(5, 5), (45, 5), (45, 25), (5, 25), (5, 5)
Answer» A. (-5, 0), (-5, 35), (55, 35), (55,-5), (-5,-5)
277.
The lost motion in CNC machine tool is on account of
A.
Backlash in gearing
B.
Wind-up of drive shafts
C.
Deflection of machine tool members
D.
All the above
Answer» A. Backlash in gearing
Chapter: Advanced Manufacturing Method
278.
From following, the alternative name for RP is ________
A.
Additive Manufacturing
B.
Layer Manufacturing
C.
Direct CAD Manufacturing
D.
All of the above
Answer» D. All of the above
279.
Input of RP data is ______
A.
CAM data
B.
CAPP data
C.
CAD data
D.
All of the above
Answer» C. CAD data
280.
In the ___________ process, one starts with a single block of solid material larger than the final size of the desired object and material is removed until the desired shape is reached.
A.
Subtractive process
B.
Additive process
C.
Formative process
D.
All of above
Answer» A. Subtractive process
281.
__________ is one where mechanical forces or restricting forms are applied on a material so as to form it into the desired shape
A.
Subtractive process
B.
Additive process
C.
Formative process
D.
All of above
Answer» C. Formative process
282.
Which of the following is not subtractive process?
A.
Milling
B.
Stereo-lithography
C.
Sawing
D.
EDM
Answer» B. Stereo-lithography
283.
Which of the following process is not formative process?
A.
Bending
B.
Plastic injection molding
C.
Selective Laser Sintering
D.
Forging
Answer» C. Selective Laser Sintering
284.
Choose the correct sequence to generate prototype
A.
3D CAD data – CAD solid model – STL file – RP prototype
B.
CAD solid model – 3D CAD data – RP prototype – STL file
C.
STL file – 3D CAD data – CAD solid model – RP prototype
D.
3D CAD data – STL file – CAD solid model – RP prototype
Answer» A. 3D CAD data – CAD solid model – STL file – RP prototype
285.
Which of the following can not be the input of CAD solid model?
A.
Physical mockup
B.
2D surface data
C.
Tooling
D.
3D CAD data
Answer» C. Tooling
286.
Full form of STL is _____
A.
Straight-lithography
B.
Streto-lithography
C.
Stereo-lithography
D.
Straight-lipsography
Answer» C. Stereo-lithography
287.
For rapid prototyping 3D CAD model should be converted into______file
A.
SGC
B.
SLA
C.
STL
D.
SLS
Answer» C. STL
288.
Process of converting STL file model in to layers is called________in RP
A.
chopping
B.
slicing
C.
cutting
D.
trimming
Answer» B. slicing
289.
Support structures are required for ______
A.
thin portions
B.
thick portions
C.
overhanging portions
D.
all of the above
Answer» C. overhanging portions
290.
The STL files translate the part geometry from a CAD system to________
A.
CNC machine
B.
VMC machine
C.
RP machine
D.
CAPP machine
Answer» C. RP machine
291.
Slicing a part is easier in ______
A.
B-rep method
B.
STL method
C.
CSG method
D.
PRT method
Answer» B. STL method
292.
STL file converts curved surfaces into_______
A.
Polygons
B.
Lines
C.
Surfaces
D.
None of the above
Answer» A. Polygons
293.
Which of the following is not Liquid-based RP system?
A.
Stereolithography Apparatus (SLA)
B.
Laminated Object Manufacturing (LOM)
C.
Solid Ground Curing (SGC)
D.
Solid Object Ultraviolet-Laser Printer (SOUP
Answer» B. Laminated Object Manufacturing (LOM)
294.
Full form of FDM is_______
A.
Fixed Development Modelling
B.
Fusion Development Modelling
C.
Fused Deposition Modelling
D.
Focused Deposition Modelling
Answer» C. Fused Deposition Modelling
295.
Full form of MJM is______
A.
Multi Joint Modelling
B.
Multi Jet Modelling
C.
Muted Jet Modelling
D.
Mitred Jet Modelling
Answer» B. Multi Jet Modelling
296.
Which of the following is not Solid-based RP system?
A.
Laminated Object Manufacturing (LOM)
B.
Paper Lamination Technology (PLT)
C.
Electron Beam Melting (EBM)
D.
Fused Deposition Modeling (FDM)
Answer» C. Electron Beam Melting (EBM)
297.
Laminated Object Manufacturing (LOM) is developed by_______
A.
Stratasys
B.
CAM-LEM
C.
Kira Corporation
D.
Cubic Technologies
Answer» D. Cubic Technologies
298.
Which of the following is not Powder-Based RP system?
A.
Selective Laser Sintering (SLS)
B.
Solid Object Ultraviolet-Laser Printer (SOUP)
C.
Electron Beam Melting (EBM)
D.
Direct Metal Deposition (DMD)
Answer» B. Solid Object Ultraviolet-Laser Printer (SOUP)
299.
Which of the following RP system is not developed by 3D systems?
A.
Selective Laser Sintering (SLS)
B.
Multi-Jet Modeling System (MJM)
C.
Paper Lamination Technology (PLT)
D.
Stereolithography Apparatus (SLA)
Answer» C. Paper Lamination Technology (PLT)
300.
Which of the following is used as base material in Stereolithography (SLA) process?
A.
Thermoplastics , Metals powders
B.
Thermoplastics , Eutectic metals.
C.
Titanium alloys
D.
Photopolymer
Answer» D. Photopolymer
301.
Which of the following is used as base material in Electron Beam Melting (EBM) process?
A.
Titanium alloys
B.
Photopolymer
C.
Various materials
D.
Paper
Answer» A. Titanium alloys
302.
Which of the following is used as base material in Selective laser sintering (SLS)?
A.
Photopolymer
B.
Thermoplastics, Metal powders
C.
Titanium alloys
D.
Various materials
Answer» B. Thermoplastics, Metal powders
303.
Which of the following advantage does not possess by the rapid prototyping process over the traditional prototyping process?
A.
It consumes less time
B.
Gives better quality
C.
Reduces product launch time
D.
It’s cheaper
Answer» D. It’s cheaper
304.
STL file format is represented by interaction of ______
A.
lines and hexagons
B.
lines and rectangles
C.
lines and triangles
D.
lines and circles
Answer» C. lines and triangles
305.
Which material possess the maximum strength?
A.
ABS
B.
PLA
C.
Nylon
D.
INF
Answer» C. Nylon
306.
Which material can be efficiently used as a support material?
A.
ABS
B.
PLA
C.
Nylon
D.
INF
Answer» D. INF
307.
Which material gives finest surface finish in RP?
A.
ABS
B.
PLA
C.
Nylon
D.
INF
Answer» B. PLA
308.
Which materials possess highest melting temperature?
A.
ABS
B.
PLA
C.
Nylon
D.
INF
Answer» C. Nylon
309.
Which file format cannot be converted into STL file format?
A.
.prt
B.
.sld
C.
.dwg
D.
.stp
Answer» C. .dwg
310.
STL files contains ______
A.
mass properties of the model
B.
geometrical data
C.
drawing data
D.
all of the above
Answer» B. geometrical data
311.
In STL files when chord length decrease then accuracy _______
A.
increase
B.
decrease
C.
may increase or may decrease
D.
remains constant
Answer» A. increase
312.
Which of the following is least important in design during rapid prototyping?
A.
Machine size
B.
Tolerance
C.
Material
D.
CAD software
Answer» B. Tolerance
313.
Drilling, milling and threading are examples of which kind of processes?
A.
Additive manufacturing
B.
Subtractive manufacturing
C.
Formative manufacturing
D.
None of the above
Answer» B. Subtractive manufacturing
314.
Which of the following is not an example of additive manufacturing?
A.
Fused-deposition-modeling
B.
Electron beam machining
C.
SLS
D.
Injection molding
Answer» D. Injection molding
315.
In 4D printing, which one is the fourth dimension?
A.
Time
B.
Material
C.
Sound
D.
Light
Answer» A. Time
316.
Which of the following is not a data interfacing format?
A.
STL
B.
SLC
C.
LEAF
D.
RP
Answer» D. RP
317.
Which of the following is a data interfacing format?
A.
HP/GL
B.
ACER
C.
ASUS
D.
IBM
Answer» A. HP/GL
318.
STL consists of an unordered list of _______ facets representing the outside skin of an object.
A.
linear
B.
triangular
C.
square
D.
hexagonal
Answer» B. triangular
319.
STL file consists of which of the following format?
A.
ASCII
B.
Binary
C.
Both A & B
D.
Neither A nor B
Answer» C. Both A & B
320.
STL files plague several problems as they contain no _______ data
A.
geographical
B.
analytical
C.
topological
D.
all of the above
Answer» C. topological
321.
In laminated object manufacturing (LOM), which of the following cutting strategy is preferable?
A.
Directional scanning
B.
Zigzag tool paths
C.
Contouring and spiral paths
D.
Boundary cutting tool paths
Answer» D. Boundary cutting tool paths
322.
A tessellated model is said to be valid if there are ________
A.
no missing facets
B.
no degenerate facets
C.
no overlapping facets
D.
all of the above
Answer» D. all of the above
323.
Among the following, which one is the last step in Data Processing for Rapid Prototyping?
A.
Model slicing
B.
Part orientation
C.
Tool path generation
D.
Support generation
Answer» C. Tool path generation
324.
Among the following, which one is the earliest step in Data Processing for Rapid Prototyping?
A.
Model slicing
B.
Part orientation
C.
Tool path generation
D.
Support generation
Answer» B. Part orientation
325.
What type of inner structure makes the smoothest model in RP?
A.
Higher resolution
B.
Larger polygons
C.
Lower resolution
D.
None of the above
Answer» A. Higher resolution
326.
What type of inner structure can be used to reduce the printing time of the model in RP?
A.
Higher resolution
B.
Smaller polygons
C.
Lower resolution
D.
None of the above
Answer» C. Lower resolution
327.
Which of the following is an optional section of IGES format?
A.
Start section
B.
Global section
C.
Terminate section
D.
Flag section
Answer» D. Flag section
328.
Which one is NOT related to rapid prototyping definition?
A.
Layer by layer
B.
Physical model
C.
From 3D CAD data
D.
Production line
Answer» D. Production line
329.
Which one of the processes is NOT using a laser?
A.
FDM
B.
SLA
C.
SLS
D.
LOM
Answer» A. FDM
330.
Which of the following is the process in the RP cycle?
A.
Post-processing
B.
Transfer to machine
C.
Pre-processing
D.
All of the above
Answer» D. All of the above
331.
Which of the following is one of the design process steps?
A.
Build
B.
Concept
C.
Pre-processing
D.
Transfer to machine
Answer» B. Concept
332.
What is the format for the prototyping machine file?
A.
.prt
B.
.slt
C.
.stl
D.
.iges
Answer» C. .stl
333.
Which CAD software cannot be used to create data for the prototyping machine?
A.
CREO
B.
CATIA
C.
NX Unigraphics
D.
Adobe Illustrator
Answer» D. Adobe Illustrator
334.
Which one of the process is subtractive prototyping?
A.
5 axis CNC Milling
B.
Fused Deposition Modeling
C.
Multi-Jet Modeling
D.
Stereolithography Apparatus
Answer» A. 5 axis CNC Milling
335.
From the following, in which process, the input material is in solid form?
A.
SLA
B.
SLS
C.
FDM
D.
MJM
Answer» C. FDM
336.
Which of the process, the input material is in liquid form?
A.
LOM
B.
SLS
C.
FDM
D.
MJM
Answer» D. MJM
337.
Which of the process, the input material is in powder form?
A.
LOM
B.
SLS
C.
FDM
D.
MJM
Answer» B. SLS
338.
Which material is NOT available for LOM process?
A.
Paper
B.
Plastic
C.
Metal
D.
Glass
Answer» D. Glass
339.
Which of the process is using the extrusion concept?
A.
SLA
B.
SLS
C.
FDM
D.
MJM
Answer» C. FDM
340.
Which of the following is the process of the pre-processing stage?
A.
Remove support
B.
Checking 3D CAD data
C.
De-powdering loose material
D.
Dip in a binder to strengthen the part
Answer» B. Checking 3D CAD data
341.
A computer model of a part design on a CAD system is called which of the following?
A.
Computer Prototype
B.
Geometric Prototype
C.
Solid Prototype
D.
Virtual Prototype
Answer» D. Virtual Prototype
342.
Machining is never used for rapid prototyping because it takes too long.
A.
True
B.
False
Answer» B. False
343.
In the context of rapid prototyping and additive manufacturing, tessellation refers to the process of slicing the CAD model of the part into layers.
A.
Droplet Deposition Manufacturing
B.
Used-Deposition Modeling
C.
Laminated-Object Manufacturing
D.
Stereolithography
Answer» D. Stereolithography
344.
Which of the following RP technologies uses powders as the starting material?
A.
Droplet Deposition Manufacturing
B.
Fused-Deposition Modeling
C.
Selective Laser Sintering
D.
Stereolithography
Answer» C. Selective Laser Sintering
345.
Which of the following RP technologies uses molten material as the starting material?
A.
Three-Dimensional Printing
B.
Fused-Deposition Modeling
C.
Stereolithography
D.
Selective Laser Sintering
Answer» C. Stereolithography
346.
Which one of the following RP technologies uses solid sheet stock as the starting material?
A.
Droplet deposition manufacturing
B.
Fused-deposition modeling
C.
Laminated-Object Manufacturing
D.
Selective Laser Sintering
Answer» C. Laminated-Object Manufacturing
347.
Which of the following are examples of appropriate applications of additive manufacturing in the actual production of parts and products?
A.
Castings made in small quantities
B.
Plastic parts in small batch sizes
C.
Mass-produced metal parts
D.
Special textile products
Answer» B. Plastic parts in small batch sizes
348.
Which of the following are problems with the current rapid prototyping and additive manufacturing technologies?
A.
Limited material variety
B.
Inability to convert a solid part into layers
C.
Poor machinability of the starting material
D.
The inability of the designer to design the part
Answer» A. Limited material variety
349.
Of all of the current material addition rapid prototyping technologies, which one is the most widely used?
A.
Ballistic particle manufacturing
B.
Selective laser sintering
C.
Solid ground curing
D.
Stereolithography
Answer» D. Stereolithography
350.
Which one of the following is not a rapid indirect tooling method?
A.
Vacuum Casting
B.
Investment Casting
C.
Laser-Engineered Net Shaping
D.
Injection molding
Answer» C. Laser-Engineered Net Shaping
351.
Which one of the following is not a direct rapid tooling method?
A.
LOM Composite
B.
Direct AIM (ACES Injection Molding)
C.
Sand Molding
D.
Injection molding
Answer» D. Injection molding
352.
In the process of Selective Laser Sintering, raw material used is in the form of ______
A.
machining wax
B.
foam core
C.
powder
D.
rubber
Answer» C. powder
353.
In Selective Laser Sintering, laser light is also being used.
A.
True
B.
False
Answer» A. True
354.
Explicit support structures are not required in Selective Laser Sintering (SLS).
A.
True
B.
False
Answer» A. True
355.
Which of the following process is suitable for making injection molding tools?
A.
SL
B.
SLS
C.
EBM
D.
FDM
Answer» B. SLS
356.
Which one of the following is not Extrusion-Based RP Systems?
A.
Fused Deposition Modelling (FDM)
B.
3D Printing
C.
Sheet Lamination (Laminated Object Manufacturing (LOM))
D.
Electron Beam melting (EBM)
Answer» D. Electron Beam melting (EBM)
357.
Which of the following is the firststep of the rapid prototyping process?
A.
3D Modeling
B.
Data Conversion
C.
Building
D.
Postprocessing
Answer» A. 3D Modeling
358.
Which of the following is the last step of the rapid prototyping process?
A.
3D Modeling
B.
Data Conversion
C.
Building
D.
Postprocessing
Answer» D. Postprocessing
359.
In STL files Euler’s rule for solids can be written as
A.
No. of faces – No. of edges + No. of vertices = 3 x No. of bodies
B.
No. of faces – No. of edges + No. of vertices = No. of bodies
C.
No. of faces – No. of edges + No. of vertices = 2 x No. of bodies
D.
No. of faces – No. of edges + No. of vertices = 4 x No. of bodies
Answer» C. No. of faces – No. of edges + No. of vertices = 2 x No. of bodies
360.
Which of the following is a stage of Product Life Cycle?
A.
Introduction stage
B.
Growth stage
C.
Mature stage
D.
All of the above
Answer» D. All of the above
361.
In “Product Life Cycle” a stage represents rapid growth of product sale known as_____.
A.
Saturation stage
B.
Mature stage
C.
Growth stage
D.
Introduction stage
Answer» C. Growth stage
362.
In “Product Life Cycle” a stage represents a new and previously unknown product for buyers known as_____.
A.
Mature stage
B.
Introduction stage
C.
Decline stage
D.
None of the above
Answer» B. Introduction stage
363.
In “Product Life Cycle” a stage in which buyers move on to other products and sales drop is known as_____.
A.
Growth stage
B.
Introduction stage
C.
Mature stage
D.
Decline stage
Answer» D. Decline stage
364.
In “Product Life Cycle” in _______ stage market becomes saturated
A.
Mature stage
B.
Growth stage
C.
Decline stage
D.
Introduction stage
Answer» A. Mature stage
365.
The technology life cycle concerned with the time and cost of developing the technology
A.
True
B.
False
Answer» A. True
366.
The time duration of useful life of any product is known as a product’s life cycle.
A.
True
B.
False
Answer» B. False
367.
The technology is defined as the sophistication of a plant ,any equipment or any machine etc
A.
True
B.
False
Answer» B. False
Chapter: Robotics and Automation
368.
____ is a manufacturing philosophy in which different parts are manufactured in a small batch or group based on similarities
A.
Production technology
B.
Group technology
C.
Flexible manufacturing system
D.
None of the above
Answer» B. Group technology
369.
Which layout is mostly used for batch type of production?
A.
Product layout
B.
Process layout
C.
In line layout
D.
None of the above
Answer» B. Process layout
370.
In which layout manufacturing is done according to machine arrangement
A.
GT layout
B.
Product layout
C.
Process layout
D.
Hybrid layout
Answer» C. Process layout
371.
In which layout manufacturing is done according to product’s characteristics?
A.
Process layout
B.
GT layout
C.
Product layout
D.
Both A & B
Answer» D. Both A & B
372.
From the following which is type of coding system?
A.
OPITZ coding system
B.
KK3 system
C.
The MICLASS system
D.
All of the above
Answer» D. All of the above
373.
From the following in which coding method supplementary code and form code are used?
A.
KK3 system
B.
The MICLASS system
C.
OPITZ coding system
D.
The DICLASS system
Answer» C. OPITZ coding system
374.
____ is a collection of parts which have similar characteristics
A.
Part family
B.
Mono family
C.
GT family
D.
Poly family
Answer» A. Part family
375.
From the following which is the step of machine cell design?
A.
Divide parts into part families
B.
Select type of machine cell
C.
Prepare a composite part
D.
All of the above
Answer» D. All of the above
376.
Cellular manufacturing is not a application of thought of group technology.
A.
True
B.
False
C.
D
Answer» A. True
377.
Form which of the following is the objective of cellular manufacturing.
A.
Reduced manufacturing lead time
B.
Increased in quality
C.
Reduced setup time
D.
All of the above
Answer» D. All of the above
378.
____ is a highly automated group of GT machine cell.
A.
Flexible manufacturing system
B.
Group technology
C.
Automated system
D.
None of the above
Answer» A. Flexible manufacturing system
379.
From the following which is the main components of Flexible manufacturing system(FMS).
A.
Main frame computer
B.
Automated guided vehicle
C.
Material handling system
D.
All of the above
Answer» D. All of the above
380.
From the following what is the full form of AGV?
A.
Automatic Guided Vehicle
B.
Automated Gas Vehicle
C.
Automated Guided Vehicle
D.
None of the above
Answer» C. Automated Guided Vehicle
381.
From the following which is the types of Automated Guided Vehicle (AGV).
A.
Driver less train
B.
Pallet trucks
C.
Unit load carriers
D.
All of the above
Answer» D. All of the above
382.
From the following which method is used to guide the AGV.
A.
Wire guided
B.
Paint strip
C.
Self guided vehicle
D.
All of the above
Answer» D. All of the above
383.
From the following which is not the application of AGV.
A.
Truck loading and unloading
B.
To change the tool
C.
Material transfer
D.
Paper roll transfer
Answer» B. To change the tool
384.
From the following which is the benefits of AGV.
A.
Reduction in man-hours
B.
Useful in hazardous area
C.
Both A & B
D.
None of the above
Answer» C. Both A & B
385.
A combination of equipment and controls which handles, stores and retrieves materials with precision,accuracy and speed under a defined degree of automation is known as ____
A.
Automated storage and retrieval system (AS/RS)
B.
Flexible manufacturing system
C.
Automated guided vehicle
D.
None of the above
Answer» A. Automated storage and retrieval system (AS/RS)
386.
From the following which is the benefits of AS/RS
A.
Less product damage
B.
Good and easy housekeeping in FMS
C.
Reduce labour cost
D.
All of the above
Answer» D. All of the above
387.
From the following which is the type of FMS layout
A.
In line layout
B.
Ladder layout
C.
Both A &B
D.
None of the above
Answer» C. Both A &B
388.
What is the full form of AS/RS in FMS?
A.
Automated storage and recovery system
B.
Automatic storage and rotary system
C.
Automated storage and retrieval system
D.
Automated storage and regenerative system
Answer» C. Automated storage and retrieval system
389.
From the following in which FMS layout machine tools are kept along a straight line.
A.
Loop layout
B.
In line layout
C.
Ladder layout
D.
Open field layout
Answer» B. In line layout
390.
From the following in which FMS layout workstations are arranged in a loop
A.
Ladder layout
B.
In line layout
C.
Loop layout
D.
None of the above
Answer» C. Loop layout
391.
From the following in which FMS layout workstations are arranged in a loop with rungs
A.
Ladder layout
B.
Open field layout
C.
Loop layout
D.
None of the above
Answer» A. Ladder layout
392.
From the following which FMS layout is combination of many loop and ladder layout
A.
Ladder layout
B.
Open field layout
C.
Loop layout
D.
None of the above
Answer» B. Open field layout
393.
From the following in which FMS layout robots are used as material handling system
A.
Ladder layout
B.
Open field layout
C.
Loop layout
D.
Robot centered layout
Answer» D. Robot centered layout
394.
If the production is done according to change in various product design easily then such manufacturing system is called as flexible system.
A.
True.
B.
False.
Answer» B. False.
395.
From which of the following is not the main element of Flexible manufacturing system
A.
Work handling system
B.
Material handling system
C.
Tool handling system
D.
Main frame computer
Answer» A. Work handling system
396.
From the following which is the function of material handling system used in FMS
A.
Handling of parts with different variety
B.
Independent movement of part between stations
C.
Both A & B
D.
None of the above
Answer» B. Independent movement of part between stations
397.
____ is an independent and self-operated vehicle which moves on defined guide ways
A.
Automated Guarded Vehicles
B.
Automated Storage and Retrieval System
C.
Automated Guided Vehicles
D.
Automated Driving Vehicles
Answer» C. Automated Guided Vehicles
398.
From the following which material handling equipment is used in ladder layout of FMS
A.
Conveyor systems
B.
AGVS
C.
Both A & B
D.
None of the above
Answer» C. Both A & B
399.
From the following which material handling equipment is used in Robot centered layout of FMS
A.
Industrial Robot
B.
Conveyor systems
C.
Rail guided vehicle system
D.
None of the above
Answer» A. Industrial Robot
400.
____ is a general purpose, programmable machine possessing certain human like characteristics
A.
Robot
B.
Manipulator
C.
Gripper
D.
None of the above
Answer» A. Robot
401.
_____ is area of engineering and science which understand the different principles, structure and programming of robot
A.
Mechatronics
B.
Robotics
C.
Aeronautics
D.
None of the above
Answer» B. Robotics
402.
____ is also known as work volume of robot
A.
Work envelope
B.
Speed of movement
C.
Load carrying capacity
D.
Precision of movement
Answer» A. Work envelope
403.
The speed at which robot is capable of manipulating its end effector is known as the____.
A.
Velocity of robot
B.
Maximum reach
C.
Speed of movement
D.
Load carrying capacity
Answer» C. Speed of movement
404.
The capacity of robot to carry load is known as_____.
A.
Load carrying capacity
B.
Work envelope
C.
Maximum reach
D.
None of the above
Answer» A. Load carrying capacity
405.
____ is a collection of mechanical linkage connected by joints
A.
End effector
B.
Gripper
C.
Sensor
D.
Manipulator
Answer» D. Manipulator
406.
Sensors are the transducers that are used to____.
A.
Measure physical quantity
B.
Hold the objects
C.
Fix the objects
D.
None of the above
Answer» A. Measure physical quantity
407.
From which of the following is the geometrical configuration of robot
A.
Cylindrical configuration
B.
Polar configuration
C.
Both A& B
D.
None of the above
Answer» C. Both A& B
408.
____ grippers are used to pick up light weight materials such as paper,cloth etc
A.
Mechanical grippers
B.
Adhesive grippers
C.
Vacuum cup grippers
D.
Magnetic grippers
Answer» B. Adhesive grippers
409.
____ grippers are used to transfer ferrous material
A.
Magnetic grippers
B.
Mechanical grippers
C.
Adhesive grippers
D.
Vacuum cup grippers
Answer» A. Magnetic grippers
410.
The technology is defined as the sophistication of a plant ,any equipment or any machine etc
A.
True
B.
False
C.
D
Answer» B. False
411.
Sensors which are come in contact with some surface to measured desired physical variable are known as____
A.
Non-contact sensors
B.
Proximity sensors
C.
Contact sensors
D.
None of the above
Answer» C. Contact sensors
412.
From which of the following is known as contact sensor.
A.
Tactile sensor
B.
Proximity sensor
C.
Visual sensor
D.
Range detector
Answer» A. Tactile sensor
413.
From which of the following is known as non-contact sensor
A.
Force sensor
B.
Tactile sensor
C.
Proximity sensor
D.
None of the above
Answer» C. Proximity sensor
414.
From which of the following is robot programming language
A.
VAL
B.
AML
C.
ABD
D.
Both A & B
Answer» D. Both A & B
415.
____ sensors are used to indicate presence or absence of hot objects
A.
Vision sensors
B.
Infrared sensors
C.
Photo-metric sensors
D.
Range detectors
Answer» B. Infrared sensors
416.
____ sensors are used to identify objects for pick and place purpose
A.
Range detectors
B.
Infrared sensors
C.
Vision sensors
D.
Photo-metric sensors
Answer» C. Vision sensors
417.
Up and down motion along an axis known as ____ in robotics
A.
Pitch
B.
Roll
C.
Yaw
D.
None of the above
Answer» A. Pitch
418.
Circular motion along an axis is known as ____ in robotics.
A.
Pitch
B.
Roll
C.
Yaw
D.
None of the above
Answer» B. Roll
419.
The operating range or reach capability of robot is known as ____ in robotics
A.
Roll
B.
Pitch
C.
Yaw
D.
Speed of movement
Answer» C. Yaw
420.
From which of the following is robot programming method
A.
Manual method
B.
Lead through method
C.
Walk through method
D.
All of the above
Answer» D. All of the above
421.
Which type of motion is possible in Cartesian coordinate robots?
A.
3 linear motion
B.
2 linear and 1 rotational motion
C.
3 rotational motion
D.
1 linear and 1 rotational motion
Answer» A. 3 linear motion
422.
Which type of motion is possible in cylindrical coordinate robots?
A.
3 rotational motion
B.
3 linear and 1 rotational motion
C.
2 linear and 1 rotational motion
D.
3 linear motion
Answer» C. 2 linear and 1 rotational motion
423.
Which type of motion is possible in polar coordinate robots?
A.
2 linear and 1 rotational motion
B.
3 linear motion
C.
3 rotational motion
D.
2 rotational and 1 linear motion
Answer» D. 2 rotational and 1 linear motion
424.
Which type of motion is possible in jointed arm robots
A.
3 linear and 1 rotational motion
B.
3 rotational motion
C.
3 linear motion
D.
2 linear and 1 rotational motion
Answer» B. 3 rotational motion
425.
From the following which type of work envelope is made in Cartesian coordinate robot.
A.
Square work envelope
B.
Spherical work envelope
C.
Cylindrical work envelope
D.
Rectangular work envelope
Answer» D. Rectangular work envelope
426.
From the following which type of work envelope is made in jointed arm robot
A.
Rectangular work envelope
B.
Cylindrical work envelope
C.
Spherical or hemispherical work envelope
D.
C
Answer» B. Cylindrical work envelope
427.
____ is the bridge between design and manufacturing
A.
Production planning
B.
Process Planning
C.
Product design
D.
None of the above
Answer» B. Process Planning
428.
From which of the following is the type of computer aided process planning
A.
Variant process planning
B.
Generative process planning
C.
Both A &B
D.
None of the above
Answer» C. Both A &B
429.
From the following which is not the type of protocol used in CIM?
A.
Open standard interconnection – OSI
B.
Manufacturing Automation Protocol – MAP
C.
Technical and Industrial Protocol – TIP
D.
None of the above
Answer» C. Technical and Industrial Protocol – TIP
430.
____ is defined as the set of technologies that can construct physical solid models from CAD data
A.
Rapid Production
B.
Rapid prototyping
C.
Lean Manufacturing
D.
Artificial intelligence
Answer» B. Rapid prototyping
431.
From which of the following is benefit of computer integrated manufacturing(CIM).
A.
Reduced lead time
B.
Increased production time
C.
Reduced productivity
D.
All of the above
Answer» A. Reduced lead time
432.
Cellular manufacturing is also known as_______
A.
Manufacturing Technology
B.
Production Technology
C.
Group Technology
D.
None of the above
Answer» C. Group Technology
433.
In a simple and visual method of Cell design, the priorities in classifying may be in the order
A.
Rotational or non rotational – Material – Size – Shape
B.
Material – Rotational or non rotational – Size – Shape
C.
Size – Rotational or non rotational – Material – Shape
D.
Shape – Rotational or non rotational – Material – Size
Answer» A. Rotational or non rotational – Material – Size – Shape
434.
In Opitz system, 2nd digit indicates
A.
Type and Shape
B.
External shape and external shape elements
C.
External plane surface finishing
D.
Auxiliary hole and gear teeth
Answer» B. External shape and external shape elements
435.
In cell formation using production flow analysis, the following process will be left out of the analysis
A.
Grinding
B.
Milling
C.
Drilling
D.
Gear cutting
Answer» D. Gear cutting
436.
Which of the following technique of grouping does not consider the design and shape aspect?
A.
A simple and visual method of cell design
B.
Family formation by classification and codification
C.
Cell formation using Production Flow Analysis
D.
All of the above
Answer» C. Cell formation using Production Flow Analysis
437.
The following is basically a material flow simplification technique
A.
A simple and visual method of cell design
B.
Family formation by classification and codification
C.
Cell formation using Production Flow Analysis
D.
All of the above
Answer» C. Cell formation using Production Flow Analysis
438.
Which layout is mostly used for the batch type of production?
A.
Product layout
B.
Process layout
C.
In line layout
D.
None of the above
Answer» B. Process layout
439.
From the following in which type of GT code chain-type structure is used?
A.
Poly code
B.
Hybrid code
C.
Mono code
D.
None of the above
Answer» A. Poly code
440.
From the following in which type of GT code tree-type structure is used?
A.
Poly code
B.
Hybrid code
C.
Mono code
D.
None of the above
Answer» C. Mono code
441.
Which system uses computers at lower-level strategies
A.
Variant CAPP
B.
Generative CAPP
C.
Hybrid CAPP
D.
All of the above
Answer» A. Variant CAPP
442.
Which system uses computers at higher level strategies
A.
Variant CAPP
B.
Generative CAPP
C.
Hybrid CAPP
D.
All of the above
Answer» B. Generative CAPP
443.
If all the processing equipment and machines are arranged according to the sequence of operations of a product the layout is known as
A.
Product layout
B.
Process layout
C.
Fixed-position layout
D.
GT layout
Answer» A. Product layout
444.
The following type of layout is preferred to manufacture a standard product in large quantity
A.
Product layout
B.
Process layout
C.
Fixed-position layout
D.
GT layout
Answer» A. Product layout
445.
The following type of layout is preferred for low volume production of non-standard products
A.
Product layout
B.
Process layout
C.
Fixed-position layout
D.
GT layout
Answer» B. Process layout
446.
In ship manufacturing, the type of layout preferred is
A.
Product layout
B.
Process layout
C.
Fixed-position layout
D.
GT layout
Answer» C. Fixed-position layout
447.
Which of the following is not the method of part family formation
A.
Visual inspection method
B.
Automatic product sorting
C.
Parts classification & coding
D.
Production flow analysis
Answer» B. Automatic product sorting
448.
Choose the right sequence for Production Flow Analysis
A.
PFA Chart – Data Collection – Sortation of process plans
B.
Data collection – PFA chart – Sortation of process plans
C.
Sortation of process plans – Data collection – PFA chart
D.
Data collection – Sortation of process plans – PFA chart
Answer» D. Data collection – Sortation of process plans – PFA chart
449.
Chain type coding structure is also known as________
A.
Poly code
B.
Mono code
C.
Hybrid code
D.
Miscellaneous code
Answer» A. Poly code
450.
The first five digits of the Opitz classification system are ______
A.
Form code
B.
Secondary code
C.
Supplementary code
D.
Stationary code
Answer» A. Form code
451.
The middle four digits of the Opitz classification system are ______
A.
Form code
B.
Secondary code
C.
Supplementary code
D.
Stationary code
Answer» C. Supplementary code
452.
The last four digits of the Opitz classification system are ______
A.
Form code
B.
Secondary code
C.
Supplementary code
D.
Stationary code
Answer» B. Secondary code
453.
Form code of the Opitz system is for_________
A.
Design attributes
B.
Manufacturing attributes
C.
Production operation type & sequence
D.
Maintenance flow
Answer» A. Design attributes
454.
Supplementary code of the Opitz system is for_________
A.
Design attributes
B.
Manufacturing attributes
C.
Production operation type & sequence
D.
Maintenance flow
Answer» B. Manufacturing attributes
455.
Secondary code of the Opitz system is for_________
A.
Design attributes
B.
Manufacturing attributes
C.
Production operation type & sequence
D.
Maintenance flow
Answer» C. Production operation type & sequence
456.
Digit 1 in Opitz system is for_________
A.
Part class
B.
Main shape
C.
Rotational machining
D.
Plane surface machining
Answer» A. Part class
457.
Digit 2 in Opitz system is for_________
A.
Part class
B.
Main shape
C.
Rotational machining
D.
Plane surface machining
Answer» B. Main shape
458.
Digit 3 in Opitz system is for_________
A.
Part class
B.
Main shape
C.
Rotational machining
D.
Plane surface machining
Answer» C. Rotational machining
459.
Digit 4 in Opitz system is for_________
A.
Part class
B.
Main shape
C.
Rotational machining
D.
Plane surface machining
Answer» D. Plane surface machining
460.
Digit 5 in Opitz system is for_________
A.
Part class
B.
Main shape
C.
Additional holes, teeth and forming
D.
Plane surface machining
Answer» C. Additional holes, teeth and forming
461.
Use computers for storage and retrieval of the data for the process plans are?
A.
Lower-level strategies
B.
Intermediate strategies
C.
Higher-level strategies
D.
Morden-level strategies
Answer» A. Lower-level strategies
462.
A use computer to automatically generate process plans is?
A.
Lower-level strategies
B.
Intermediate strategies
C.
Higher-level strategies
D.
Morden-level strategies
Answer» C. Higher-level strategies
463.
Which automation is suited for high production quantities
A.
Flexible
B.
Programmable
C.
Fixed
D.
All of above
Answer» C. Fixed
464.
Which manufacturing system is best suited for batch production
A.
Flexible
B.
Programmable
C.
Fixed
D.
All of above
Answer» B. Programmable
465.
——–is a manufacturing system in which sequence of operation is fixed by equipment configuration
A.
Flexible
B.
Programmable
C.
Fixed
D.
All of above
Answer» C. Fixed
466.
A company is producing 15000 mobiles annually. Determine production scale of company
A.
Low Production
B.
Medium Production
C.
High Production
D.
None
Answer» C. High Production
467.
Which one of the following statements is TRUE?
A.
Teach pendant is used for lead-through teaching.
B.
Teach pendant is used for manual teaching.
C.
Teach pendant is used for off-line teaching of robots.
D.
Teach pendant is not used in robot teaching.
Answer» B. Teach pendant is used for manual teaching.
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