Answer / apoorv

no u r wrong , oil cools by d process of convection and external radiators. oil extracts the heat so heated oil is vapour which rises above and heat is blowed out

Answer / kalaiarasan

by ejecting the heat from transformer

Answer / arun

actully when xmer works there r two losses iron and copper loss due to these losses core and windings r heated and most of the wdg and core are immersed in the xmer so the oil will heatd this heated oil goes up and the cold one goes down this heated oil gives its heat to the walls of the xmer and from the wall it is given to the surrouding atmosphere like this continuous cooling is done by the oil

how to calclate fault level

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For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?

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Do Phase angle measurement have any application in freq/harmonics measurement? If so how?

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What is Wlak Test in Fire Alarm System????

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What are the main faults of DC generators?

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What should be current in the Primary and secondary side of 1000KVA (11KV Supply)Transformer.?

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hii this is ranjith from hyd... i want to know what type of questions they ask in interview...and hw the interview will go..? what subjects thay ask specially for electrical engg students?

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