Synchronous Motors – Page 4 – HI MCQ!

Under which of the following conditions hunting of synchronous motor is likely to occur?

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ln a synchronous motor which loss varies with load?

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ln a synchronous motor which loss varies with load?

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A synchronous motor will always stop when?

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A synchronous motor will always stop when?

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When the stator windings are connected in such a fashion that the number of poles are made half, the speed of the rotor of a synchronous motor?

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The armature current of the synchronous motor has higher values for?

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When the voltage applied to a synchronous motor is increased, which of the following will reduce?

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In which of the following motors the stator and rotor magnetic field rotate at the same speed?

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If in a synchronous motor, driving mechanical load and drawing current at lagging power factor from constant voltage supply, its field excitation is increased, then its power factor?

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