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SYNCHRONOUS MOTORS QUIZ

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

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In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then

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A three phase synchronous motor will have

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

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In a synchronous motor, the rotor copper loss are met by ______

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The rotor copper losses, in a synchronous motor, are met by

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A synchronous machine with low value of short-circuit ratio has

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The percentage slip in case of a synchronous motor is

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A synchronous motor is cheaper than 3-phase induction motor for _____

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Leading power factor synchronous motors cost ______ the unity pf motors.

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