The maximum speed variation in a 3-phase synchronous motor is

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• A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will
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• In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be
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• In case one phase of a three-phase synchronous motor is short-circuited the motor will
• A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased
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