Synchronous Motors Damper winding in a synchronous motor________ Increases hunting of the motor Improve pf of the motor Serves to start the motor Reduces windage losses Increases hunting of the motor Improve pf of the motor Serves to start the motor Reduces windage losses ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is independent of _________. Applied stator voltage Speed Field excitation Torque angle Applied stator voltage Speed Field excitation Torque angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerting torque is produced by induction motor torque in damper winding eddy current and hysteresis torque in pole faces All of the listed here induction motor torque in field winding induction motor torque in damper winding eddy current and hysteresis torque in pole faces All of the listed here induction motor torque in field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Load on the motor Speed of the rotor Dc excitation only Both the speed and rotor flux Load on the motor Speed of the rotor Dc excitation only Both the speed and rotor flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor is used for Fluctuating loads Low torque loads Variable speed loads Power factor corrections Fluctuating loads Low torque loads Variable speed loads Power factor corrections ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Remains unchanged Is decreased too much Become zero Is increased too much Remains unchanged Is decreased too much Become zero Is increased too much ANSWER DOWNLOAD EXAMIANS APP
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