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What is the frame used in the standard frames?
c Explanation: The frame is a mechanical structure required to house a stator of given outside diameter. The frame also includes housing the bearings, end covers, terminal box and maximum length
c
See lessExplanation: The frame is a mechanical structure required to house a stator of given
outside diameter. The frame also includes housing the bearings, end covers, terminal
box and maximum length
How many factors are present in the relation between rating and dimension of rotating machines?
c Explanation: There are 8 factors present in the relation between rating and dimension of rotating machines. They are symbols, main dimensions, total loadings, specific loadings, output equation, factors affecting size of rotating machine, choice of specific magnetic loading, choice of specific eleRead more
c
See lessExplanation: There are 8 factors present in the relation between rating and dimension of
rotating machines. They are symbols, main dimensions, total loadings, specific loadings,
output equation, factors affecting size of rotating machine, choice of specific magnetic
loading, choice of specific electric loading.
How should the air gaps be present in the magnetic circuit according to length and cross section?
d Explanation: The air gaps should be present in the magnetic circuit in the low length. The air gap should have maximum cross section to reduce the reluctance.
d
See lessExplanation: The air gaps should be present in the magnetic circuit in the low length.
The air gap should have maximum cross section to reduce the reluctance.
What are the factors which are considered when the optimal solution involves iterations wherein the values of variables are changed?
d Explanation: The optimal solution involves iteration wherein the values of variables are changed. This is done to satisfy both the performance and cost constraints.
d
See lessExplanation: The optimal solution involves iteration wherein the values of variables are
changed. This is done to satisfy both the performance and cost constraints.
What is the range of the saturation factor in the single phase induction motor?
c Explanation: The minimum value of the saturation factor in the single phase induction motor is 1.1. The maximum value of the saturation factor in the single phase induction motor is 1.35.
c
See lessExplanation: The minimum value of the saturation factor in the single phase induction
motor is 1.1. The maximum value of the saturation factor in the single phase induction
motor is 1.35.
.What is the relation of the stator slot leakage factor with the skew leakage reactance?
: a Explanation: Skew leakage reactance is one of the parameters used in the leakage reactance calculation. The skew leakage reactance is directly proportional to the stator slot leakage reactance
: a
See lessExplanation: Skew leakage reactance is one of the parameters used in the leakage
reactance calculation. The skew leakage reactance is directly proportional to the stator
slot leakage reactance
.What is the relation of the total slot leakage reactance with number of stator slots?
b Explanation: The slot leakage reactance is one of the parameters in the leakage reactance calculation. The slot leakage reactance is indirectly proportional to the number of rotor slots
b
See lessExplanation: The slot leakage reactance is one of the parameters in the leakage
reactance calculation. The slot leakage reactance is indirectly proportional to the number
of rotor slots
What is the range of the ratio of the total cross section of rotor bars to the total stator copper section for main winding for aluminium?
c Explanation: The minimum value of range of the ratio of the total cross section of rotor bars to the total stator copper section for main winding is 1. The maximum value range of the ratio of the total cross section of rotor bars to the total stator copper section for main winding is 1.6.
c
See lessExplanation: The minimum value of range of the ratio of the total cross section of rotor
bars to the total stator copper section for main winding is 1. The maximum value range
of the ratio of the total cross section of rotor bars to the total stator copper section for
main winding is 1.6.
What is the formula for the flux density in stator core?
c Explanation: The maximum flux, length of iron and depth of stator core is calculated. On substitution it provides the flux density in stator core.
c
See lessExplanation: The maximum flux, length of iron and depth of stator core is calculated. On
substitution it provides the flux density in stator core.
What is the formula for the area required for the insulated conductors?
c Explanation: The total number of conductors per slot and the diameter of insulated conductors are calculated. On substitution the area required for the insulated conductors are calculated.
c
See lessExplanation: The total number of conductors per slot and the diameter of insulated
conductors are calculated. On substitution the area required for the insulated conductors
are calculated.