Synchronous Motors In a synchronous motor, the magnitude of stator back emf depends on _____ Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux Speed of the rotor Load on the motor Dc excitation only Both the speed and rotor flux ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The net armature voltage of a synchronous motor is equal to the arithmetic sum of Eb and V arithmetic difference of Eb and V vector sum of Eb and V vector difference of Eh and V arithmetic sum of Eb and V arithmetic difference of Eb and V vector sum of Eb and V vector difference of Eh and V ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The percentage slip in case of a synchronous motor is 1 zero 0.01 0.005 1 zero 0.01 0.005 ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The pull out torque of a synchronous motor will ______ as the field excitation is increased. Remain unchanged Decrease None of the listed here Increase Remain unchanged Decrease None of the listed here Increase ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The standard full-load power factor ratings for synchronous motors are unity or 0.8 leading unity or zero unity or 0.8 lagging zero or 0.8 leading unity or 0.8 leading unity or zero unity or 0.8 lagging zero or 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 60 to 70% 75 to 80% 85 to 95% 99 to 99.5% 60 to 70% 75 to 80% 85 to 95% 99 to 99.5% ANSWER DOWNLOAD EXAMIANS APP
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