Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ None of the listed here Change supply frequency Reduce dc field excitation to zero Interchange any two stator lines None of the listed here Change supply frequency Reduce dc field excitation to zero Interchange any two stator lines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 100 cycles/second None of the listed here 25 cycles/ second 50 cycles/second 100 cycles/second None of the listed here 25 cycles/ second 50 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 30° electrical 0° electrical 90° electrical 45° electrical 30° electrical 0° electrical 90° electrical 45° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Damper winding in a synchronous motor________ Reduces windage losses Serves to start the motor Improve pf of the motor Increases hunting of the motor Reduces windage losses Serves to start the motor Improve pf of the motor Increases hunting of the motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develop maximum power when load angle is 60° 120° 90° 45° 60° 120° 90° 45° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The capacity of a synchronous capacitor is generally in the range of kVAR VAR None of the listed here MVAR kVAR VAR None of the listed here MVAR ANSWER DOWNLOAD EXAMIANS APP
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