Synchronous Motors The rotor copper losses, in a synchronous motor, are met by armature input c. source supply lines motor input armature input c. source supply lines motor input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Low excitation only Both higher and low excitation Higher excitation only None of the listed here Low excitation only Both higher and low excitation Higher excitation only None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The minimum armature current of the synchronous motor corresponds to operation at zero power factor leading unity power factor 0.707 power factor leading 0.707 power factor lagging zero power factor leading unity power factor 0.707 power factor leading 0.707 power factor lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Mechanical load Supply frequency Field excitation None of the listed here Mechanical load Supply frequency Field excitation None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A three phase synchronous motor will have One slip rings Two slip rings Three slip rings No slip rings One slip rings Two slip rings Three slip rings No slip rings ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While running, a synchronous motor is compelled to run at synchronous speed because of _______ 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 Induced emf in rotor field winding by stator flux Compulsion due to lenz's law Magnetic locking between stator and rotor poles ANSWER DOWNLOAD EXAMIANS APP
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