Synchronous Motors While running, a synchronous motor is compelled to run at synchronous speed because of _______ Induced emf in rotor field winding by stator flux Compulsion due to lenz's law Damper winding in its pole faces Magnetic locking between stator and rotor poles Induced emf in rotor field winding by stator flux Compulsion due to lenz's law Damper winding in its pole faces Magnetic locking between stator and rotor poles ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value short circuit ratio has Lower stability limit High stability limit Good speed regulation Good voltage regulation Lower stability limit High stability limit Good speed regulation Good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ Has a damper winding Has no losses None of the listed here Is a doubly fed machine Has a damper winding Has no losses None of the listed here Is a doubly fed machine ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ Zero None of the listed here minimum Maximum Zero None of the listed here minimum Maximum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 45° 90° 120° 60° 45° 90° 120° 60° 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 36 30 16 None of the listed here 36 30 16 ANSWER DOWNLOAD EXAMIANS APP
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