Following energized winding of a D.C. machine should not be opened as it would produce high inductive voltage which may be dangerous to personnel and may cause its own insulation failure.
A)Series field
B)Compensating field
C)Inter pole field
D)Shunt field

Question

Quizplus · Accepted Answer

The shunt field winding of a DC machine is connected across the armature and has a high inductance. When it is opened while energized, the sudden interruption of current can cause a high inductive voltage (also known as back EMF) to develop across the winding. This high voltage can be dangerous to personnel and may also cause insulation failure in the winding itself.

Following Energized Winding of a D