Q.

Zero-sequence current can flow from a line to transformer bank if the windings are in

  • AGrounded star/delta
  • BDelta/star
  • CStar/grounded star 
  • DDelta/delta 
Correct Answer : (A)

Grounded star/delta

Hints :

Zero-sequence current can flow from a line to transformer bank if the windings are in Grounded star/delta.

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