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Ram Sharma • 193.84K Points
Coach Science 

Q. It is essential that transformer oil should have no traces of moisture. The reason is that

  • (A) Density of oil increases with reduces heat dissipation
  • (B) Moisture will reduce the lubricating property of the oil
  • (C) Moisture will develop rust
  • (D) Moisture will reduce the dielectric strength of the oil and hence insulation is weakened
Correct Answer - Option(D)

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