DGVCL Exam Paper (11-12-2011)
An over excited synchronous motor draws current at

Lagging power factor
Depends on nature of load
Unity power factor
Leading power factor

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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

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

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