Synchronous Motors MCQ Questions & Answers | Electrical Engineering

A. maintaining constant excitation

B. running the motor on leading power factors

C. providing damper bars in the rotor pole faces

D. oscillations cannot be damped

A. under-loaded

B. over-loaded

C. under-excited

D. over-excited

A. direct current

B. alternating current

C. no current

D. all of the above

A. leading current

B. lagging current

C. both (A) and (B)

D. none of the above

A. connected to D.C. supply

B. short-circuited by low resistance

C. kept open-circuited

D. none of the above