Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it continues to run at the same speed the motor stops it runs at a very high speed it runs at a slower speed it continues to run at the same speed the motor stops it runs at a very high speed it runs at a slower speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The direction of rotation of a synchronous motor can be reversed by reversing, Current to field winding Polarity of rotor poles None of the listed here Supply phase sequence Current to field winding Polarity of rotor poles None of the listed here Supply phase sequence ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Invesely proportional to Directly proportional to Independent of Directly proportional to square of Invesely proportional to Directly proportional to Independent of Directly proportional to square of ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque only at synchronous speed while over-excited below or above synchronous speed when under loaded only at synchronous speed while over-excited below or above synchronous speed when under loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One minute One hour None of the listed here One second One minute One hour None of the listed here One second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor can be changed by varying _______ None of the listed here Mechanical load Field excitation Supply frequency None of the listed here Mechanical load Field excitation Supply frequency ANSWER DOWNLOAD EXAMIANS APP
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