2051Electrical EngineeringMedium
If excitation of a synchronous motor running with a constant load is decreased from its normal value, ignoring effects of armature reaction, it leads to________?
Aincrease in both armature current and power factor which is lagging
Bincrease in back e.m.f. but decrease in armature current
Cincrease in both armature current and power factor angle
Dincrease in torque angle but decrease in back e.m.f.
Correct answer
C. increase in both armature current and power factor angle
Explanation
The correct answer is increase in both armature current and power factor angle.