Q.In a dc machine the armature mmf is 

  • AStationary with respect to the field poles but rotating with respect to the armature 
  • BRotating with respect to field poles as well as armature 
  • CRotating with respect to field poles
  • DStationary with respect to armature
Correct Answer : (A)

Stationary with respect to the field poles but rotating with respect to the armature 

Hints :

In a dc machine the armature mmf is Stationary with respect to the field poles but rotating with respect to the armature.

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