Synchronous Motors A synchronous motor runs at only one speed because it ______ None of the listed here Has no losses Is a doubly fed machine Has a damper winding None of the listed here Has no losses Is a doubly fed machine Has a damper winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For the same active power consumed, the stator current of a synchronous motor is ______ that of a 3 phase induction motor. More than The same as None of the listed here Less than More than The same as None of the listed here Less than ANSWER DOWNLOAD EXAMIANS APP
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 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 The rotor strengthens the rotating field causing more motor current ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value short circuit ratio has Good speed regulation High stability limit Good voltage regulation Lower stability limit Good speed regulation High stability limit Good voltage regulation Lower stability limit ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it runs at a slower speed it continues to run at the same speed it runs at a very high speed the motor stops it runs at a slower speed it continues to run at the same speed it runs at a very high speed the motor stops ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The magnitude of field flux in a 3-phase synchronous motor Varies with speed Varies with the load Varies with power factor Remains constant at all loads Varies with speed Varies with the load Varies with power factor Remains constant at all loads ANSWER DOWNLOAD EXAMIANS APP
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