Synchronous Motors – Page 7 – HI MCQ!

ln a synchronous motor, the damping winding is generally used to?

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

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

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While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerating torque is produced by?

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A synchronous motor working at leading power factor can be used as?

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Change of D.C. excitation of a synchronous motor changes?

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The mechanical displacement of the rotor with respect to the stator. in polyphase multipolar synchronous motors running at full load, is of the order of?

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Synchroning power of a synchronous machine is?

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Due to which of the following reasons a synchronous motor fails to pull into synchronism after applying D.C. field current?

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The percentage slip in case of a synchronous motor is?

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