In case of D.C. shunt motors the speed is dependent on back e.m.f. only because
A)back e.m.f. is equal to armature drop
B)armature drop is negligible
C)flux is proportional to armature current
D)flux is practically constant in D:C. shuntmotors

Question

Quizplus · Accepted Answer

In D.C. shunt motors, the field winding is connected in parallel with the armature, and the field current is relatively constant. This means the magnetic flux, which is generated by the field windings, is also constant under normal operating conditions. The speed of a D.C. shunt motor is directly proportional to the back e.m.f. (Electromotive Force) and inversely proportional to the flux. Since the flux is constant, the speed primarily depends on the back e.m.f.

In Case of D