Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Over loaded Over excited Under excited Under loaded Over loaded Over excited Under excited Under loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current ANSWER DOWNLOAD EXAMIANS APP
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 back e.m.f. of a synchronous motor depends on load angle speed load All of these load angle speed load All of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the forced vibrations will be maximum when driving A reciprocating air compressor A centrifugal pump Any of the listed here A centrifugal blower A reciprocating air compressor A centrifugal pump Any of the listed here A centrifugal blower ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.5 leading 0.8 leading Unity 0.8 lagging 0.5 leading 0.8 leading Unity 0.8 lagging ANSWER DOWNLOAD EXAMIANS APP
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