A. high excitation only
B. low excitation only
C. both high and low excitation
D. none of the above
A. augments it directly
B. directly opposes it
C. cross-magnetises it
D. none of the above
A. directly proportional to the square of the applied voltage
B. directly proportional to applied voltage
C. inversely proportional to applied voltage
D. none of the above
A. stator supply is relieved of responsibility of producing magnetic field
B. mechanical load on the motor can be adjusted
C. synchronous motor runs at synchronous speed
D. synchronous motor has large air gap
A. armature current and power factor
B. terminal voltage and load factor
C. power factor and field current
D. field current and armature current
A. alternator type machines
B. induction type machines
C. salient pole type machines
D. smooth cylindrical type machines
A. direct current
B. alternating current
C. no current
D. all of the above