DGVCL Exam Paper (11-12-2011)
In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

Universal motor
Synchronous motor
Induction motor
Reluctance motor

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

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

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