Synchronous Motors A synchronous motor can operate at Leading power factor Lagging power factor only Lagging, leading and unity power factors Unity power factor only Leading power factor Lagging power factor only Lagging, leading and unity power factors Unity power factor only ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 2 percent 10 percent 4 percent Zero 2 percent 10 percent 4 percent Zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor is used for Power factor corrections Low torque loads Fluctuating loads Variable speed loads Power factor corrections Low torque loads Fluctuating loads Variable speed loads ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The net armature voltage of a synchronous motor is equal to the vector difference of Eh and V arithmetic difference of Eb and V vector sum of Eb and V arithmetic sum of Eb and V vector difference of Eh and V arithmetic difference of Eb and V vector sum of Eb and V arithmetic sum of Eb and V ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Change of D.C. excitation of a synchronous motor changes Applied voltage of the motor Power factor of power drawn by the motor Any of the above Motor speed Applied voltage of the motor Power factor of power drawn by the motor Any of the above Motor speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. None of the listed here Increase Decrease Remain unchanged None of the listed here Increase Decrease Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
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