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 excitation is said to be hundred per cent the motor is said to be fully loaded the torque generated is maximum the excitation is said to be zero per cent the excitation is said to be hundred per cent the motor is said to be fully loaded the torque generated is maximum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The back e.m.f. of a synchronous motor depends on All of these speed load load angle All of these speed load load angle ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If the field of a synchronous motor is underexcited, the power factor will be zero leading unity lagging zero leading unity lagging ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In order to to reverse the direction of a synchronous motor, _______ Change supply frequency None of the listed here Interchange any two stator lines Reduce dc field excitation to zero Change supply frequency None of the listed here Interchange any two stator lines Reduce dc field excitation to zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Power factor of a synchronous motor is unity when None of the listed here The armature current is maximum The armature current is zero The armature current is minimum None of the listed here The armature current is maximum The armature current is zero The armature current is minimum ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a 3-phase synchronous motor, the negative phase sequence exists when the motor is supplied with unbalanced voltage under-loaded over-loaded None of these supplied with unbalanced voltage under-loaded over-loaded None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS