A low frequency induction furnace works on what frequency current?
(a) 40 cycles/second
(b) 50 cycles/second
(c) 60 cycles/second
(d) 70 cycles/second
This question was addressed to me by my school teacher while I was bunking the class.
I'm obligated to ask this question of Induction Furnace topic in portion Metal Furnace and Practice of Casting-Forming-Welding II