DGVCL Exam Paper (11-12-2011)
The advantage of slipring induction motor over the squirrel cage induction motor is

It has a higher efficiency
It can be started with the help of rotor resistances
It is suitable for higher speeds
It's power factor is higher

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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 reduce the magnetic hum of the motor
To increase the distributuion factor
To increase the breadth factor

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