While Starting a Salient Pole Synchronous Motor by Induction Motor

question 2

Multiple Choice

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

• A)induction motor torque in field winding
• B)induction motor torque in damper winding
• C)eddy current and hysteresis torque in pole faces
• D)all of the above methods