Synchronous Motors The duration of sudden short circuit test on synchronous motor is usually about One minute None of the listed here One hour One second One minute None of the listed here One hour One second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Becomes zero Is decreased too much Is increased too much Remains unchanged Becomes zero Is decreased too much Is increased too much Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its power factor may be varied at will its speed is independent of supply frequency its speed may be controlled more easily None of these its power factor may be varied at will its speed is independent of supply frequency its speed may be controlled more easily None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor which loss varies with load ? Bearing friction loss Copper loss Core loss Windage loss Bearing friction loss Copper loss Core loss Windage loss 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 In order to to reverse the direction of a synchronous motor, _______ Interchange any two stator lines None of the listed here Reduce dc field excitation to zero Change supply frequency Interchange any two stator lines None of the listed here Reduce dc field excitation to zero Change supply frequency ANSWER DOWNLOAD EXAMIANS APP
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