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 Synchronous capacitor is An ordinary static capacitor bank None of the listed here An over excited synchronous motor running without mechanical load An over excited synchronous motor driving mechanical load An ordinary static capacitor bank None of the listed here An over excited synchronous motor running without mechanical load An over excited synchronous motor driving mechanical load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a practical synchronous motor will occur when the torque angle is about _____ 45° 30° 75° 0° 45° 30° 75° 0° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque when under loaded below or above synchronous speed only at synchronous speed while over-excited when under loaded below or above synchronous speed only at synchronous speed while over-excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 85 to 95% 60 to 70% 75 to 80% 99 to 99.5% 85 to 95% 60 to 70% 75 to 80% 99 to 99.5% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A 50 Hz synchronous motor runs at 200 rpm. The number of salient poles on the rotor are______ 30 16 36 None of the listed here 30 16 36 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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