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

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

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

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DGVCL Exam Paper (11-12-2011)
The purpose of interpoles in DC machines is to nullify

The cross-magnetizing effect of armature mmf
Both the cross-magnetizing mmf and the reactance voltage
The demagnetizing effect of armature mmf
The reactance voltage

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