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Match the transformer part with its function.

1. Conservator   2. Breather   3. Buchholz relay

P. Detects gas from an internal fault   Q. Dries the incoming air   R. Allows the oil to expand

  • A.1-Q, 2-R, 3-P
  • B.1-P, 2-Q, 3-R
  • C.1-R, 2-P, 3-Q
  • D.1-R, 2-Q, 3-P

Answer: D

The three work together on the oil system, and each has one clear job. A transformer without a breather would draw moist air straight into its oil, and one without a conservator would need room for expansion inside the tank itself.

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