Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Synchronising angle Power factor angle Torque angle Angle of retardation Synchronising angle Power factor angle Torque angle Angle of retardation 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 very high speed it continues to run at the same speed it runs at a slower speed the motor stops it runs at a very high speed it continues to run at the same speed it runs at a slower speed the motor stops ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is pulled out of synchronism, the stator current ________ Become zero Is decreased too much Is increased too much Remains unchanged Become zero Is decreased too much Is increased too much Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the synchronous motor, properly synchronised to the supply is running on no load and is having negligible loss then the stator current will be very high the stator current will be very small the stator current will be zero the back e.m.f. will be more than the supply voltage the stator current will be very high the stator current will be very small the stator current will be zero the back e.m.f. will be more than the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ Supply frequency Mechanical load Field excitation None of the listed here Supply frequency Mechanical load Field excitation None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Which of the following motors is non self starting? Squirrel cage induction motor Synchronous motor Wound rotor induction motor Dc series motor Squirrel cage induction motor Synchronous motor Wound rotor induction motor Dc series motor ANSWER DOWNLOAD EXAMIANS APP
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