The flash point of transformer oil should be higher than

Related MCQs

• The heat dissipating capability of transformers of ratings higher than 30 kVA in increased by providing which of the following ?
• Aluminium when adopted as a conductor material in ______ transformers, decreases the overall cost of the transformer
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• For large power transformers, self oil cooled type or air blast type which of the following values of current density may be used ?
• A current density of _____ is ilsed for large power transformers with forced circulation of oil or with water cooling coils
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• In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
• In transformers using hot rolled steel, the cross-section of the yoke is made about _____ greater than that of the core
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