DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Universal motor
Capacitor start motor
Split phase motor
Capacitor start capacitor run 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?

There is an attracting force between the conductors
The force increases when the distance between the conductors is increased
There is a repelling 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 interpoles in DC machines is to nullify

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

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