Question

9 Why compensating winding is provided in
large DC generators?
A Connect more loads
B Reduce commutation effect
C Neutralize armature reaction effect
D Increase the efficiency of generator​

Answer 1

Answer:

C Neutralize armature reaction effect

Explanation:

When a DC machine is operated at heavy load or operated with a weak main field, the effect of armature reaction flux dominates. Due to this the resultant air gap flux gets heavily distorted. In the interpolar region, the effect of armature reaction is neutralized by the interpole winding but the distortion prevails under the pole face.