Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 10 percent 2 percent Zero 4 percent 10 percent 2 percent Zero 4 percent ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is independent of _________. Speed Field excitation Applied stator voltage Torque angle Speed Field excitation Applied stator voltage Torque angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by using brakes changing the load changing the supply voltage changing frequency using brakes changing the load changing the supply voltage changing frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Angle of retardation Power factor angle Torque angle Synchronising angle Angle of retardation Power factor angle Torque angle Synchronising angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Becomes zero Is decreased too much Remains unchanged Is increased too much Becomes zero Is decreased too much Remains unchanged Is increased too much 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 excitation is said to be zero per cent the torque generated is maximum the excitation is said to be hundred per cent the motor is said to be fully loaded the excitation is said to be zero per cent the torque generated is maximum the excitation is said to be hundred per cent the motor is said to be fully loaded ANSWER DOWNLOAD EXAMIANS APP
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