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

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

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

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DGVCL Exam Paper (11-12-2011)
A Mho relay is a

Voltage restrained directional relay
Directional restrained over current relay
Directional restrained over voltage relay
Voltage controlled over current relay

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