Question

Energy losses are minimum and optimized in the electric arc furnaces during melting metals.

(a) True

(b) False

I had been asked this question in an international level competition.

My enquiry is from Electric Furnace topic in section Metal Furnace and Practice of Casting-Forming-Welding II

Answer 1

Correct answer is (b) False

To explain I would say: Energy losses from the surfaces are large due to the large surface area to volume ratio of the electric furnaces that results in abundant energy losses during the operation of melting metals. These losses also arise through the refractory walls and roof due to the large surface area of the furnace.