Synchronous Motors In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then the excitation is said to be hundred per cent the excitation is said to be zero per cent the torque generated is maximum the motor is said to be fully loaded the excitation is said to be hundred per cent the excitation is said to be zero per cent the torque generated is maximum the motor is said to be fully loaded ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be zero unity leading lagging zero unity leading lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor runs at only one speed because it ______ None of the listed here Is a doubly fed machine Has no losses Has a damper winding None of the listed here Is a doubly fed machine Has no losses Has a damper winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous capacitor is an over excited motor running at ________ Half full load None of the listed here Full load No load Half full load None of the listed here Full load No load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 99 to 99.5% 75 to 80% 60 to 70% 85 to 95% 99 to 99.5% 75 to 80% 60 to 70% 85 to 95% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a practical synchronous motor will occur when the torque angle is about _____ 0° 45° 75° 30° 0° 45° 75° 30° ANSWER DOWNLOAD EXAMIANS APP
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