Synchronous Motors As the load is applied to a synchronous motor, the motor takes more armature current because The rotor by shifting its phase backward causes motor 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 increased load has to take more current The rotor by shifting its phase backward causes motor 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 increased load has to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, Current to field winding Supply phase sequence None of the listed here Polarity of rotor poles Current to field winding Supply phase sequence None of the listed here Polarity of rotor poles ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A rotary converter can also be run as a Synchronous motor Dc compound generator Dc series generator Dc shunt generator Synchronous motor Dc compound generator Dc series generator Dc shunt generator ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motors are generally used in application requiring _______ Frequent stopping Variable speed Infrequent starting Sudden application of heavy loads Frequent stopping Variable speed Infrequent starting Sudden application of heavy loads ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Supply lines Dc source Motor input Armature input Supply lines Dc source Motor input Armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Low excitation only Higher excitation only Both higher and low excitation None of the listed here Low excitation only Higher excitation only Both higher and low excitation None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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