Synchronous Motors

A. Phase to phase winding resistance
B. Stator winding to earthed frame
C. Rotor winding to earthed shaft
D. All of the above

A. increases as the load increases
B. decreases as the load decreases
C. always remains constant
D. none of the above

A. augments it directly
B. directly opposes it
C. cross-magnetises it
D. none of the above

A. become more
B. become less
C. remain constant
D. none of the above

A. applied voltage of the motor
B. power factor of power drawn by the motor
C. motor speed
D. none of the these
E. all of the these

A. zero degree
B. two degrees
C. five degrees
D. ten degrees

A. its power factor may be varied at will
B. its speed is independent of supply frequency
C. its speed may be controlled more easily
D. none of the above

A. synchronizing
B. obtuse
C. torque
D. power factor

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

A. voltage booster
B. phase advancer
C. noise generator
D. mechanical synchronizer