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 excitation is said to be zero per cent the torque generated is maximum the motor is said to be fully loaded the excitation is said to be hundred per cent the excitation is said to be zero per cent the torque generated is maximum the motor is said to be fully loaded the excitation is said to be hundred per cent ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor is generally ______ times its full-load torque. 5 to 10 0.5 6 to 9 1.25 to 3.5 5 to 10 0.5 6 to 9 1.25 to 3.5 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always Positive Zero 1% 0.5% Positive Zero 1% 0.5% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor is used for Power factor corrections Low torque loads Variable speed loads Fluctuating loads Power factor corrections Low torque loads Variable speed loads Fluctuating loads ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Motor input Armature input Supply lines Dc source Motor input Armature input Supply lines Dc source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque when under loaded only at synchronous speed below or above synchronous speed while over-excited when under loaded only at synchronous speed below or above synchronous speed while over-excited ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS