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_____________?

Related Mcqs:

A three-phase synchronous motor will have_____________?

A. no slip-rings B. one slip-ring C. two slip-rings D. three slip-rings...

Slip-rings in a synchronous motor carry____________?

A. direct current B. alternating current C. no current D. all of the above...

The armature current of the synchronous motor has higher values for_____________?

A. high excitation only B. low excitation only C. both A. and (b) D. none of the above...

Slip rings are usually made of__________?

A. carbon or graphite B. brass or steel C. silver or gold D. copper or aluminium...

The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as__________?

A. locked-rotor torque B. synchronous torque C. pull up torque D. reluctance torque...