Synchronous Motors Synchronous motor always run at The synchronous speed Less than synchronous speed More than synchronous speed None of the listed here The synchronous speed Less than synchronous speed More than synchronous speed None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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 pull-in torque pull-out torque pull-up torque None of these pull-in torque pull-out torque pull-up torque None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor of synchronous motor is excited with direct current when the motor _____ None of the listed here Approches synchronous speed Is at standstill Approches half synchronous speed None of the listed here Approches synchronous speed Is at standstill Approches half synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that None of these its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will None of these its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Synchronising angle Torque angle Angle of retardation Power factor angle Synchronising angle Torque angle Angle of retardation Power factor angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it continues to run at the same speed it runs at a slower speed the motor stops it runs at a very high speed it continues to run at the same speed it runs at a slower speed the motor stops it runs at a very high speed ANSWER DOWNLOAD EXAMIANS APP
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