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.Management Sciences
A. zero
B. 45°
C. 90°
D. 120°
Related Mcqs:
- A synchronous motor working at leading power factor can be used as____________?
- A. voltage booster B. phase advancer C. noise generator D. mechanical synchronizer...
- The duration of sudden snort-circuit test on a synchronous motor is usually about_____________?
- A. one hour B. one minute C. one second D. none of the above...
- In which of the following motors the stator and rotor magnetic field rotate at the same speed?
- A. Universal motor B. Synchronous motor C. Induction motor D. Reluctance motor...
- Slip rings are usually made of__________?
- A. carbon or graphite B. brass or steel C. silver or gold D. copper or aluminium...
- If excitation of a synchronous motor running with a constant load is decreased from its normal value, ignoring effects of armature reaction, it leads to____________?
- A. increase in both armature current and power factor angle B. increase in back e.m.f. but decrease in armature current C. increase in both armature current and power factor which is lagging D. increase in torque angle but decrease in back e.m.f....
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