Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will not start run with excessive vibrations take less than the rated load run at 2/3 of synchronous speed not start run with excessive vibrations take less than the rated load run at 2/3 of synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Remain unchanged Decrease None of the listed here Increase Remain unchanged Decrease None of the listed here Increase ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the forced vibrations will be maximum when driving A reciprocating air compressor Any of the listed here A centrifugal pump A centrifugal blower A reciprocating air compressor Any of the listed here A centrifugal pump A centrifugal blower ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 99 to 99.5% 85 to 95% 75 to 80% 60 to 70% 99 to 99.5% 85 to 95% 75 to 80% 60 to 70% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be started by All of the listed here Provinding damper winding Dc compound motor Pony motor All of the listed here Provinding damper winding Dc compound motor Pony motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor with large air gap has A higher synchronizing power which makes the machine less sensitive to load variations All of the listed here A small value of inherent regulation A higher value of stability limit A higher synchronizing power which makes the machine less sensitive to load variations All of the listed here A small value of inherent regulation A higher value of stability limit ANSWER DOWNLOAD EXAMIANS APP
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