Synchronous Motors When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______ None of the listed here Coincident with statorbpoles 45° (electrical) behind stator poles Mid way between N and S poles of stator None of the listed here Coincident with statorbpoles 45° (electrical) behind stator poles Mid way between N and S poles of stator ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then the motor stops it runs at a very high speed it runs at a slower speed it continues to run at the same speed the motor stops it runs at a very high speed it runs at a slower speed it continues to run at the same speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor of a synchronous motor is better than that of induction motor because synchronous motor has large air gap synchronous motor runs at synchronous speed mechanical load on the motor can be adjusted stator supply is relieved of responsibility of producing magnetic field synchronous motor has large air gap synchronous motor runs at synchronous speed mechanical load on the motor can be adjusted stator supply is relieved of responsibility of producing magnetic field ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 120° 45° 90° 60° 120° 45° 90° 60° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Variable frequency Variable load Variable supply frequency Windage friction Variable frequency Variable load Variable supply frequency Windage friction ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor behaves as _____ A resistor None of the listed here An inductor A capacitor A resistor None of the listed here An inductor A capacitor ANSWER DOWNLOAD EXAMIANS APP
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