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An air-cooled roof is used in the electric arc furnaces for making the steel metal.

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An air-cooled roof is used in the electric arc furnaces for making the steel metal.

(a) True

(b) False

I had been asked this question in an interview for job.

This is a very interesting question from Electric Furnace topic in portion Metal Furnace and Practice of Casting-Forming-Welding II

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The correct option is (b) False

Easiest explanation: The electric arc furnaces are widely used for making steel metal, it basically consists of a water cooled roof which shapes like a section of a sphere. These furnaces also include graphite electrodes which normally enter into the furnace through the roof which can be refractory lined or water cooled.

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