DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

To reduce the locking tendency of the rotor
To increase the breadth factor
To increase the distributuion factor
To reduce the magnetic hum of the motor

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DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

The force increases when the distance between the conductors is increased
There is a repelling force between the conductors
There is an attracting force between the conductors
The force increases when the distance between the conductors is decreased

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DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Reduce winding losses
Eliminate hunting and provide adequate starting torque
Eliminate losses on account of fair friction
Reduce bearing friction

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