Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Load on the motor Dc excitation only Both the speed and rotor flux Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux Speed of the rotor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The standard full-load power factor ratings for synchronous motors are zero or 0.8 leading unity or zero unity or 0.8 lagging unity or 0.8 leading zero or 0.8 leading unity or zero unity or 0.8 lagging unity or 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The percentage slip in case of a synchronous motor is 0.01 0.005 1 zero 0.01 0.005 1 zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one minute None of these one second one hour one minute None of these one second one hour ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque pull-up torque pull-out torque None of these pull-in torque pull-up torque pull-out torque None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A three phase synchronous motor will have Two slip rings No slip rings Three slip rings One slip rings Two slip rings No slip rings Three slip rings One slip rings ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS