Q.

If the armature current is increased at double its previous value and the time of commutation is halved, then reactance voltage will be 

  • AHalved
  • BRemain the same
  • CDoubled
  • Dbecome four times
Correct Answer : (D)

become four times

Hints :

If the armature current is increased at double its previous value and the time of commutation is halved, then reactance voltage will be become four times.

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