Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its speed is independent of supply frequency None of these its speed may be controlled more easily its power factor may be varied at will its speed is independent of supply frequency None of these its speed may be controlled more easily its power factor may be varied at will ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.8 lagging Unity 0.8 leading 0.5 leading 0.8 lagging Unity 0.8 leading 0.5 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Invesely proportional to Independent of Directly proportional to Directly proportional to square of Invesely proportional to Independent of Directly proportional to Directly proportional to square of ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque while over-excited only at synchronous speed when under loaded below or above synchronous speed while over-excited only at synchronous speed when under loaded below or above synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 45° 120° 60° 90° 45° 120° 60° 90° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 30° electrical 0° electrical 45° electrical 90° electrical 30° electrical 0° electrical 45° electrical 90° electrical ANSWER DOWNLOAD EXAMIANS APP
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