Q.Pilot-wire protection scheme is most economical and provides high speed relaying for

  • AShort length of lines up to  15 km.
  • BMedium length of lines up to  60 km.
  • CLong length of lines up to  200 km.
  • DAll of the above. 
Correct Answer : (A)

Short length of lines up to  15 km.

Hints :

Pilot-wire protection scheme is most economical and provides high speed relaying for Short length of lines up to  15 km.

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