If excitation of a synchronous motor running with a constant load is decreased fromits normal value, ignoring effects of armature reaction, it leads to

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

increase in both armature current and power factor angle

increase in both armature current and power factor which is lagging

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

If excitation of a synchronous motor running with a constant load is d

1.	If excitation of a synchronous motor running with a constant load is decreased fromits normal value, ignoring effects of armature reaction, it leads to
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.
Answer» B. increase in back e.m.f. but decrease in armature current