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

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

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

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

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