In an oil-filled transformer, the application of oil is for Warning: Trying to access array offset on false in /home3/indiakep/public_html/wp-content/plugins/dw-question-answer/inc/Template.php on line 8 All Questions › Category: Electrical Machines › In an oil-filled transformer, the application of oil is for 0 Vote Up Vote Down Aman Rana asked 4 years ago a) Cooling b) Insulation c) Both cooling and insulation d) Preventing the accumulation of dust