Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as None of these pull-up torque pull-out torque pull-in torque None of these pull-up torque pull-out torque pull-in torque ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor can develop synchronous torque while over-excited 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 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The power factor of a synchronous motor is better than that of induction motor because synchronous motor runs at synchronous speed synchronous motor has large air gap stator supply is relieved of responsibility of producing magnetic field mechanical load on the motor can be adjusted synchronous motor runs at synchronous speed synchronous motor has large air gap stator supply is relieved of responsibility of producing magnetic field mechanical load on the motor can be adjusted ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Damper winding in a synchronous motor________ Serves to start the motor Increases hunting of the motor Improve pf of the motor Reduces windage losses Serves to start the motor Increases hunting of the motor Improve pf of the motor Reduces windage losses ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to Directly proportional to square of Independent of Invesely proportional to Directly proportional to Directly proportional to square of Independent of Invesely proportional to ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 0° electrical 30° electrical 90° electrical 45° electrical 0° electrical 30° electrical 90° electrical 45° electrical ANSWER DOWNLOAD EXAMIANS APP
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