DGVCL Exam Paper (11-12-2011)
Rated making capacity of a ciruit breaker is equal to

Rated symmetrical breaking capacity
2.55 X rated symmetrical breaking capacity
1.11 X rated symmetrical breaking capacity
√2 X rated symmetrical breaking capacity

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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 is suitable for higher speeds
It has a higher efficiency
It's power factor is higher

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DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Reduce bearing friction
Eliminate hunting and provide adequate starting torque
Eliminate losses on account of fair friction
Reduce winding losses

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

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

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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?

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
There is an attracting force between the conductors

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