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
Reluctance motor
Induction motor

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DGVCL Exam Paper (11-12-2011)
The advantage of slipring induction motor over the squirrel cage induction motor is

It's power factor is higher
It is suitable for higher speeds
It has a higher efficiency
It can be started with the help of rotor resistances

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