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How many design dimension are present in the design of the small reluctance motor?
Answer: c Explanation: There are 5 design dimensions present in the design of the small reluctance motors. They are the design of the main dimensions, design of stator windings, design of the rotor of the reluctance motor, design of performance parameters, design of losses and efficiency.
Answer: c
See lessExplanation: There are 5 design dimensions present in the design of the small
reluctance motors. They are the design of the main dimensions, design of stator
windings, design of the rotor of the reluctance motor, design of performance parameters, design of losses and efficiency.
What is the range of the ratio of the direct axis reactance to the quadrature axis reactance?
Answer: c Explanation: The minimum value of the ratio of the direct axis reactance to the quadrature axis reactance is 1.6. The maximum value of the ratio of the direct axis reactance to the quadrature axis reactance is 2.2.
Answer: c
See lessExplanation: The minimum value of the ratio of the direct axis reactance to the
quadrature axis reactance is 1.6. The maximum value of the ratio of the direct axis
reactance to the quadrature axis reactance is 2.2.
What is the angle at which the electromagnetic torque is maximum?
Answer: b Explanation: The electromagnetic torque is maximum at the angle of 45°. The range of operation of the reluctance motor lies in the range of 0-45°.
Answer: b
See lessExplanation: The electromagnetic torque is maximum at the angle of 45°. The range of operation of the reluctance motor lies in the range of 0-45°.
What is the power factor in the reluctance motor and the range of efficiency?
Answer: d Explanation: The power factor in the reluctance motor is lagging power factor. The efficiency of the machine is about 55-75%.
Answer: d
See lessExplanation: The power factor in the reluctance motor is lagging power factor. The
efficiency of the machine is about 55-75%.
What is the relation of the input voltage with the magnetic flux?
Answer: c Explanation: The input voltage is given constant, which results in the constant magnetic flux. The magnetic flux is independent of the excitation.
Answer: c
See lessExplanation: The input voltage is given constant, which results in the constant magnetic flux. The magnetic flux is independent of the excitation.
Why is the three phase reluctance motor preferred over single phase reluctance motor?
Answer: a Explanation: The reluctance motor is a small synchronous motor with salient pole rotor. The single phase reluctance motors have the phenomenon of hunting.
Answer: a
See lessExplanation: The reluctance motor is a small synchronous motor with salient pole rotor. The single phase reluctance motors have the phenomenon of hunting.
How is the reluctance motor with respect to a synchronous motor and are the field windings?
Answer: b Explanation: Reluctance motor is nothing but a simple small synchronous motor with salient pole rotor. They are without field windings in which the field flux is produced.
Answer: b
See lessExplanation: Reluctance motor is nothing but a simple small synchronous motor with
salient pole rotor. They are without field windings in which the field flux is produced.
What is the formula of the most economical relation between D and L?
d Explanation: The length and the diameter are the 2 main dimensions of the single phase induction motor. The most economical relation between length and diameter is length = 0.63 * diameter.
d
See lessExplanation: The length and the diameter are the 2 main dimensions of the single phase induction motor. The most economical relation between length and diameter is length = 0.63 * diameter.
What is the range of the motor type constant?
c Explanation: The minimum value of the motor type constants is 1.1. The maximum value of the motor type constants is 1.42.
c
See lessExplanation: The minimum value of the motor type constants is 1.1. The maximum value of the motor type constants is 1.42.
What is the range of the frequency constant?
a Explanation: The minimum value of the frequency constant used in the output equation of P.H Tricky is 0.86. The maximum value of the frequency constant used in the output equation of P.H Tricky is 1.0.
a
See lessExplanation: The minimum value of the frequency constant used in the output equation of P.H Tricky is 0.86. The maximum value of the frequency constant used in the output equation of P.H Tricky is 1.0.