Synchronous Motors Mostly, synchronous motors are of Smooth cylindrical type machines Induction type machines Alternator type machines Salient pole type machines Smooth cylindrical type machines Induction type machines Alternator type machines Salient pole type machines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by supply lines armature input motor input c. source supply lines armature input motor input c. source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ 16 None of the listed here 30 36 16 None of the listed here 30 36 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its power factor may be varied at will None of these its speed may be controlled more easily its speed is independent of supply frequency its power factor may be varied at will None of these its speed may be controlled more easily its speed is independent of supply frequency 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 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 In a 3-phase synchronous motor, the negative phase sequence exists when the motor is supplied with unbalanced voltage under-loaded over-loaded None of these supplied with unbalanced voltage under-loaded over-loaded None of these ANSWER DOWNLOAD EXAMIANS APP
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