Synchronous Motors A synchronous motor can operate at Leading power factor Lagging power factor only Unity power factor only Lagging, leading and unity power factors Leading power factor Lagging power factor only Unity power factor only Lagging, leading and unity power factors ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor is used for Low torque loads Variable speed loads Fluctuating loads Power factor corrections Low torque loads Variable speed loads Fluctuating loads Power factor corrections ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Both the speed and rotor flux Dc excitation only Load on the motor Speed of the rotor Both the speed and rotor flux Dc excitation only Load on the motor Speed of the rotor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Becomes zero Is increased too much Is decreased too much Remains unchanged Becomes zero Is increased too much Is decreased too much Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. None of the listed here Decrease Increase Remain unchanged None of the listed here Decrease Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Invesely proportional to Directly proportional to Directly proportional to square of Independent of Invesely proportional to Directly proportional to Directly proportional to square of Independent of ANSWER DOWNLOAD EXAMIANS APP
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