Q.

Zero-sequence impedance of the transmission line is

  • AEqual to the positive-sequence impedance of the line.
  • BAbout 2.5-3 times the positive – sequence impedance of the line.
  • CLess than positive – sequence impedance of the line.
  • DNone of the above.
Correct Answer : (B)

About 2.5-3 times the positive – sequence impedance of the line.

Hints :

Zero-sequence impedance of the transmission line is about 2.5-3 times the positive – sequence impedance of the line.

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