Synchronous Motors If the field circuit of an unloaded salientpole synchronous motor gets suddenly open-circuited, then it runs at a very high speed the motor stops it continues to run at the same speed it runs at a slower speed it runs at a very high speed the motor stops it continues to run at the same speed it runs at a slower speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be unity leading zero lagging unity leading zero lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to square of Invesely proportional to Directly proportional to Independent of Directly proportional to square of Invesely proportional to Directly proportional to Independent of 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
Synchronous Motors The angle between the rotor poles and stator poles, in a synchronous motor, is known as Angle of retardation Synchronising angle Torque angle Power factor angle Angle of retardation Synchronising angle Torque angle Power factor angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor behaves as _____ A capacitor A resistor None of the listed here An inductor A capacitor A resistor None of the listed here An inductor ANSWER DOWNLOAD EXAMIANS APP
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