Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Supply lines Motor input Dc source Armature input Supply lines Motor input Dc source Armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Is increased too much Is decreased too much Become zero Remains unchanged Is increased too much Is decreased too much Become zero Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Motor speed Applied voltage of the motor Any of the above Power factor of power drawn by the motor Motor speed Applied voltage of the motor Any of the above Power factor of power drawn by the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Remain unchanged Increase None of the listed here Decrease Remain unchanged Increase None of the listed here Decrease ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is supplied with unbalanced voltage over-loaded None of these under-loaded supplied with unbalanced voltage over-loaded None of these under-loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When pull-out torque occurs in a synchronous motor, the poles of the rotor are _______ None of the listed here Coincident with statorbpoles Mid way between N and S poles of stator 45° (electrical) behind stator poles None of the listed here Coincident with statorbpoles Mid way between N and S poles of stator 45° (electrical) behind stator poles ANSWER DOWNLOAD EXAMIANS APP
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