Synchronous Motors
Synchronous capacitor is

None of the listed here
An ordinary static capacitor bank
An over excited synchronous motor running without mechanical load
An over excited synchronous motor driving mechanical load

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
induction motor torque in field winding
eddy current and hysteresis torque in pole faces
All of the listed here

ANSWER DOWNLOAD EXAMIANS APP