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 induction motor torque in field winding All of the listed here eddy current and hysteresis torque in pole faces induction motor torque in damper winding induction motor torque in field winding All of the listed here eddy current and hysteresis torque in pole faces ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Motor input Dc source Supply lines Armature input Motor input Dc source Supply lines Armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The efficiency of a properly designed synchronous motor will usually fall in range 75 to 80% 99 to 99.5% 85 to 95% 60 to 70% 75 to 80% 99 to 99.5% 85 to 95% 60 to 70% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed of a synchronous motor Decreases as the load decreases Always remains constant Increases as the load increases None of the listed here Decreases as the load decreases Always remains constant Increases as the load increases None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors For power factor correction, synchronous motors operate at no-load and under-excited fields normal load with zero excitation no-load and greatly over-excited fields normal load with minimum excitation no-load and under-excited fields normal load with zero excitation no-load and greatly over-excited fields normal load with minimum excitation ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Windage friction Variable supply frequency Variable load Variable frequency Windage friction Variable supply frequency Variable load Variable frequency ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS