Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. 0.8 leading Unity None of the listed here 0.8 lagging 0.8 leading Unity None of the listed here 0.8 lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor it the back e.m.f. generated in the armature at noload is approximately equal to the applied voltage, then the excitation is said to be zero per cent the motor is said to be fully loaded the excitation is said to be hundred per cent the torque generated is maximum the excitation is said to be zero per cent the motor is said to be fully loaded the excitation is said to be hundred per cent the torque generated is maximum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor which loss varies with load ? Bearing friction loss Windage loss Copper loss Core loss Bearing friction loss Windage loss Copper loss Core loss ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a unity pf synchronous motor is operated at a leading pf, it results in _______ More than rated rotor current Less than rated horsepower output None of the listed here More than rated horseppwer output More than rated rotor current Less than rated horsepower output None of the listed here More than rated horseppwer output ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Change supply frequency Reduce dc field excitation to zero None of the listed here Interchange any two stator lines Change supply frequency Reduce dc field excitation to zero None of the listed here Interchange any two stator lines ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An under excited synchronous motor behaves as_______ A resistor An inductor None of the listed here A capacitor A resistor An inductor None of the listed here A capacitor ANSWER DOWNLOAD EXAMIANS APP
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