DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Cost of the machine
Amount of copper in the winding
Size of the machine
Harmonics in the generated emf

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

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