Synchronous Motors – Page 9 – HI MCQ!

A synchronous motor connected to infinite bus-bars has at constant full load, 100% excitation and unity power factor. On changing the excitation only, the armature current will have?

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As the load is applied to a synchronous motor, the motor takes more armature current because?

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The ratio of starting torque to running torque in a synchronous motor is?

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When the excitation of an unloaded salient pole synchronous motor suddenly gets disconnected?

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In a synchronous motor, the maximum power developed depends on all of the following except?

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An important advantage of a synchronous motor over wound round induction motor is that?

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The speed of a synchronous motor?

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The speed regulation of a synchronous motor is always?

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The speed of the synchronous motor?

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Which of the following ‘motors will be used in electric clocks?

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