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.Management Sciences
A. the motor stops
B. it runs as a reluctance motor at the same speed
C. it runs as a reluctance motor at a lower speed
D. none of the above
Related Mcqs:
- An over-excited synchronous motor takes__________?
- A. leading current B. lagging current C. both A. and (b) D. none of the above...
- 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__________?
- A. become more B. become less C. remain constant D. none of the above...
- A synchronous motor running with normal excitation adjusts to load increases essentially by increase in______________?
- A. back e.m.f. B. armature current C. power factor D. torque angle...
- The power developed by a synchronous motor will be maximum when the load angle is____________?
- A. zero B. 45° C. 90° D. 120°...
- Which of the following methods is used to start a synchronous motor?
- A. Damper winding B. Star-delta starter C. Damper winding in conjunction with star-delta starter D. Resistance starter in the armature circuit...
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