The chemical used in breather is_______________?
Correct answer: D. silica gel
- A. asbestos fiber
- B. silica sand
- C. sodium chloride
- D. silica gel
Explanation
Silica gel absorbs moisture from the air entering the transformer conservator, preventing the transformer oil and insulation from becoming damp. Asbestos fiber and silica sand do not provide this required moisture-absorbing action.
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