Synchronous Motors If a synchronous motor is operating at a supply frequency of 50 cycles/second, then, rotor revolves at ______ 25 cycles/ second 100 cycles/second None of the listed here 50 cycles/second 25 cycles/ second 100 cycles/second None of the listed here 50 cycles/second ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The duration of sudden short-circuit test on a synchronous motor is usually about one minute None of these one second one hour one minute None of these one second one hour ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The armature current of a synchronous motor will be minimum for ______ power factor. None of the listed here 0.8 lagging Unity 0.8 leading None of the listed here 0.8 lagging Unity 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An over excited synchronous motor behaves as _____ An inductor A resistor A capacitor None of the listed here An inductor A resistor A capacitor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerting torque is produced by induction motor torque in damper winding All of the listed here eddy current and hysteresis torque in pole faces induction motor torque in field winding induction motor torque in damper winding All of the listed here eddy current and hysteresis torque in pole faces induction motor torque in field winding ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor is a ______ motor. None of the listed here Variable speed Variable pf Singly fed None of the listed here Variable speed Variable pf Singly fed ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS