Synchronous Motors An over excited synchronous motor is used for Fluctuating loads Low torque loads Variable speed loads Power factor corrections Fluctuating loads Low torque loads Variable speed loads Power factor corrections ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motor always run at Less than synchronous speed More than synchronous speed None of the listed here The synchronous speed Less than synchronous speed More than synchronous speed None of the listed here The synchronous speed 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 Mid way between N and S poles of stator Coincident with statorbpoles 45° (electrical) behind stator poles None of the listed here Mid way between N and S poles of stator Coincident with statorbpoles 45° (electrical) behind stator poles ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current The rotor strengthens the rotating field causing more motor current The rotor by shifting its phase backward causes motor to take more current The increased load has to take more current The back e.m.f. decreases causing an increase in motor current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor with large air gap has A higher synchronizing power which makes the machine less sensitive to load variations A small value of inherent regulation A higher value of stability limit All of the listed here A higher synchronizing power which makes the machine less sensitive to load variations A small value of inherent regulation A higher value of stability limit All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Slip rings in a synchronous motor carry Direct current Alternating current No current All of the listed here Direct current Alternating current No current All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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