Synchronous Motors MCQ Questions & Answers | Electrical Engineering Page-7 section-1

31.
A synchronous motor is running on a load with normal excitation. Now if the load on the motor is increased

A. power factor as well as armature current will decrease

B. power factor as well as armature current will increase

C. power factor will increase but armature current will decrease

D. power factor will decrease and armature current will increase

A. voltage rating

B. current rating

C. power factor

D. speed

A. d.c. excitation only

B. speed of the motor

C. load on the motor

D. both the speed and rotor flux

A. load on the motor

B. d.c. excitation only

C. both the speed and rotor flux

D. none of the above

A. increase in both armature current and power factor angle

B. increase in back e.m.f. but decrease in armature current

C. increase in both armature current and power factor which is lagging

D. increase in torque angle but decrease in back e.m.f.