Synchronous Motors An over excited synchronous motor is used for Power factor corrections Variable speed loads Low torque loads Fluctuating loads Power factor corrections Variable speed loads Low torque loads Fluctuating loads ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, None of the listed here Polarity of rotor poles Current to field winding Supply phase sequence None of the listed here Polarity of rotor poles Current to field winding Supply phase sequence ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ Pony motor Damper winding Variable frequency source None of the listed here Pony motor Damper winding Variable frequency source None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The rotor strengthens the rotating field causing more motor current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current The rotor strengthens the rotating field causing more motor current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current The rotor by shifting its phase backward causes motor to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor working at leading power factor can be used as Mechanical synchronizer Voltage booster Phase advancer Noise generator Mechanical synchronizer Voltage booster Phase advancer Noise generator ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then the torque generated is maximum the excitation is said to be hundred per cent the excitation is said to be zero per cent the motor is said to be fully loaded the torque generated is maximum the excitation is said to be hundred per cent the excitation is said to be zero per cent the motor is said to be fully loaded ANSWER DOWNLOAD EXAMIANS APP
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