Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One second None of the listed here One hour One minute One second None of the listed here One hour One minute ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Windage friction Variable supply frequency Variable load Variable frequency Windage friction Variable supply frequency Variable load Variable frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ 36 None of the listed here 30 16 36 None of the listed here 30 16 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For power factor correction, synchronous motors operate at no-load and under-excited fields normal load with minimum excitation no-load and greatly over-excited fields normal load with zero excitation no-load and under-excited fields normal load with minimum excitation no-load and greatly over-excited fields normal load with zero excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Is increased too much Is decreased too much Becomes zero Remains unchanged Is increased too much Is decreased too much Becomes zero Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The induced e.m.f. in a synchronous motor working on leading power factor will be equal to the supply voltage None of these less than the supply voltage more than the supply voltage equal to the supply voltage None of these less than the supply voltage more than the supply voltage ANSWER DOWNLOAD EXAMIANS APP
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