Question

Square crucible furnaces are more efficient than the round crucible furnaces.

(a) True

(b) False

I have been asked this question during a job interview.

I need to ask this question from Crucible Furnaces in section Metal Furnace and Practice of Casting-Forming-Welding II

Answer 1

Correct option is (b) False

For explanation: Round crucible furnaces are generally more efficient than the square crucible furnaces because there is uniformity of thermal load in the round furnaces. These furnaces are sized according to the number of crucible used in the furnace. And the burner port is normally placed below the bottom of the crucible which basically depends on the type of metal melting.