Q.The good effect of corona on overhead lines is to 

  • AIncrease the line carrying capacity due to conducting ionised air envelope around the conductor.
  • BIncrease the power factor due to corona loss.
  • CReduce the radio interference from the conductor.
  • DReduce the steepness of surge fronts.
Correct Answer : (D)

Reduce the steepness of surge fronts.

Hints :

The good effect of corona on overhead lines is to Reduce the steepness of surge fronts.

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