Q.A Buchholz relay is used for 

  • AProtection of a transformer against all internal faults
  • BProtection of a transformer against external faults
  • CProtection of a transformer against both internal and external faults
  • DProtection of induction motors 
Correct Answer : (A)

Protection of a transformer against all internal faults

Hints :

A Buchholz relay is used for Protection of a transformer against all internal faults.

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