Synchronous Motors Mcqs

This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “Synchronous Motors”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Synchronous Motors Mcqs comprehensively.

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121.
In case one phase of a three-phase synchronous motor is short-circuited the motor will____________?

Not start

Run at 2/3 of synchronous speed

Run with excessive vibrations

Take less than the rated load

122.
Synchronous motors are generally not self-starting because:

The direction of rotation is not fixed

The direction of instantaneous torque reverses after half cycle

Startes cannot be used on these machines

Starting winding is not provided on the machines

error: You are not allowed to do so.....
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