Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Approches half synchronous speed Approches synchronous speed None of the listed here Is at standstill Approches half synchronous speed Approches synchronous speed None of the listed here Is at standstill ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at 0.707 power factor lagging zero power factor leading 0.707 power factor leading unity power factor 0.707 power factor lagging zero power factor leading 0.707 power factor leading unity power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by armature input supply lines motor input c. source armature input supply lines motor input c. source 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 eddy current and hysteresis torque in pole faces induction motor torque in damper winding induction motor torque in field winding All of the listed here eddy current and hysteresis torque in pole faces induction motor torque in damper winding induction motor torque in field winding All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is a ______ motor. Singly fed Variable pf None of the listed here Variable speed Singly fed Variable pf None of the listed here Variable speed ANSWER DOWNLOAD EXAMIANS APP
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 Magnetic locking between stator and rotor poles Damper winding in its pole faces Induced emf in rotor field winding by stator flux Compulsion due to lenz's law Magnetic locking between stator and rotor poles Damper winding in its pole faces ANSWER DOWNLOAD EXAMIANS APP
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