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Natural oil cooling method have some limitations due to which it is adopted for transformers up to a rating of ____________

Natural oil cooling method have some limitations due to which it is adopted for transformers up to a rating of ____________ Correct Answer 3000 kVA

For the transformers n higher kVA ratings can be used with this cooling method. While transformers having capacity beyond 5 MVA, due to some improper limitations forced cooling is used. Natural cooling is based on the important phenomenon seen in fluids that when oil is heated up, moves in upward direction.

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