Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 100 cycles/second None of the listed here 25 cycles/ second 50 cycles/second 100 cycles/second None of the listed here 25 cycles/ second 50 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Decrease Increase None of the listed here Remain unchanged Decrease Increase None of the listed here Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor Decreases as the load decreases None of the listed here Increases as the load increases Always remains constant Decreases as the load decreases None of the listed here Increases as the load increases Always remains constant ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Torque angle Power factor angle Synchronising angle Angle of retardation Torque angle Power factor angle Synchronising angle Angle of retardation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can be made self starting by providing Damper winding on stator Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here Damper winding on stator Damper winding on rotor poles Damper winding on stator as well as rotor poles None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero None of the listed here Change supply frequency Interchange any two stator lines Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS