An electric furnace producing heat by means of an electric arc struck
between each of three electrodes and the charge is called __________
furnace.
(A) Resistance
(B) Arc
(C) Low frequency induction
(D) None of these
between each of three electrodes and the charge is called __________
furnace.
(A) Resistance
(B) Arc
(C) Low frequency induction
(D) None of these