Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its power factor may be varied at will None of these its speed may be controlled more easily its speed is independent of supply frequency its power factor may be varied at will None of these its speed may be controlled more easily its speed is independent of supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor runs at synchronous speed, the voltage induced in the damper winding is _____ minimum Maximum Zero None of the listed here minimum Maximum Zero None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motors are generally used in application requiring _______ Variable speed Infrequent starting Frequent stopping Sudden application of heavy loads Variable speed Infrequent starting Frequent stopping Sudden application of heavy loads ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The mechanical power developed by a synchronous motor is ______ stator voltage. Directly proportional to square of Directly proportional to Invesely proportional to Independent of Directly proportional to square of Directly proportional to Invesely proportional to Independent of ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Interchange any two stator lines Change supply frequency None of the listed here Reduce dc field excitation to zero Interchange any two stator lines Change supply frequency None of the listed here Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of the synchronous motor has higher values for Higher excitation only Low excitation only Both higher and low excitation None of the listed here Higher excitation only Low excitation only Both higher and low excitation None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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