Synchronous Motors A synchronous machine with low value of short-circuit ratio has good speed regulation good voltage regulation lower stability limit high stability limit good speed regulation good voltage regulation lower stability limit high stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Field excitation Mechanical load Supply frequency None of the listed here Field excitation Mechanical load Supply frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ None of the listed here 30 36 16 None of the listed here 30 36 16 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ None of the listed here Pony motor Variable frequency source Damper winding None of the listed here Pony motor Variable frequency source Damper winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be used as a synchronous capacitor when it is Over excited Under loaded Over loaded Under excited Over excited Under loaded Over loaded Under excited ANSWER DOWNLOAD EXAMIANS APP
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