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Discussion :: Synchronous Motors

  1. A 3 phase, 400 V, 50 Hz salient pole synchronous motor is fed from an infinite bus and is running at no load. Now if the field current of the motor is reduced to zero
    2. A.
    the motor will stop
    B.
    the motor will run
    C.
    the motor will run at synchronous speed
    D.
    the motor will run at less than synchronous speed

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    Answer : Option C

    Explanation :

    the motor will run at synchronous speed

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