While starting a salient pole synchronous motor by induction motor action and connecting field discharge resistance across field, starting and accelerating torque is produced by_____________?

A. eddy current and hysteresis torque in pole faces

B. induction motor torque in field winding

C. reHetance motor torque due to saliency of the rotor

D. induction motor torque in damper winding

E. all of the above methods
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