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. induction motor torque in field winding
B. induction motor torque in damper winding
C. eddy current and hysteresis’ torque in pole faces
D. reluctance motor torque due to saliency of the rotor
E. all of the above methods
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