Saved Bookmarks
| 1. |
9 Why compensating winding is provided inlarge DC generators?A Connect more loadsB Reduce commutation effectC Neutralize armature reaction effectD Increase the efficiency of generator |
|
Answer» Answer: C Neutralize armature reaction EFFECTExplanation: 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. |
|