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

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

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

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DGVCL Exam Paper (11-12-2011)
Hysteresis in an instrument means

The change in the same reading when the input is first increased and then decreased
The inaccuracy due to change in temperature
The reliability of the instrument
The repeatability of the instrument

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