Q.

Sludge formation in transformer oil is due to which one of the following?

  • AIngress of dust particles and moisture in the oil
  • BAppearance of small fragments of paper, varnish, cotton and other organic materials in the oil
  • CChemical reaction of transformer oil with the insulating materials
  • DOxidation of transformer oil
Correct Answer : (D)

Oxidation of transformer oil

Hints :

Sludge formation in transformer oil is due to Oxidation of transformer oil.

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