Synchronous Motors The back emf in the stator of a synchronous motor depends on Rotor speed None of the listed here Flux density Rotor excitation Rotor speed None of the listed here Flux density Rotor excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 120° 60° 90° 45° 120° 60° 90° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed Approches half synchronous speed Is at standstill None of the listed here Approches synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Which of the following motors is non self starting? Dc series motor Wound rotor induction motor Squirrel cage induction motor Synchronous motor Dc series motor Wound rotor induction motor Squirrel cage induction motor Synchronous motor 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 back e.m.f. decreases causing an increase in motor current The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current The rotor strengthens the rotating field causing more motor current The back e.m.f. decreases causing an increase in motor current The increased load has to take more current The rotor by shifting its phase backward causes motor to take more current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor cannot be due to variable frequency windage friction variable supply voltage variable load variable frequency windage friction variable supply voltage variable load ANSWER DOWNLOAD EXAMIANS APP
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