Synchronous Motors A synchronous motor can be made self starting by providing Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here Damper winding on stator Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here Damper winding on stator ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Interchange any two stator lines Reduce dc field excitation to zero Change supply frequency None of the listed here Interchange any two stator lines Reduce dc field excitation to zero Change supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Low excitation only None of the listed here Higher excitation only Both higher and low excitation Low excitation only None of the listed here Higher excitation only Both higher and low excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor. The same as More than None of the listed here Less than The same as More than None of the listed here Less than ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The back e.m.f. decreases causing an increase in motor current The increased load has to take more current The rotor strengthens the rotating field causing more motor 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 increased load has to take more current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always 1% Zero Positive 0.5% 1% Zero Positive 0.5% ANSWER DOWNLOAD EXAMIANS APP
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