Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Increase Remain unchanged Decrease None of the listed here Increase Remain unchanged Decrease None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be zero leading lagging unity zero leading lagging unity ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque when under loaded only at synchronous speed below or above synchronous speed while over-excited when under loaded only at synchronous speed below or above synchronous speed while over-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ None of the listed here 50 cycles/second 25 cycles/ second 100 cycles/second None of the listed here 50 cycles/second 25 cycles/ second 100 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with power factor Remains constant at all loads Varies with the load Varies with speed Varies with power factor Remains constant at all loads Varies with the load Varies with speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back e.m.f. of a synchronous motor depends on All of these load load angle speed All of these load load angle speed ANSWER DOWNLOAD EXAMIANS APP
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