Question

What is the maximum frequency accepted for the spark gap converter, used in current production of high frequency induction furnace?

(a) 70,000 cycles/second

(b) 75,000 cycles/second

(c) 80,000 cycles/second

(d) 85,000 cycles/second

This question was addressed to me in an internship interview.

This key question is from Induction Furnace in section Metal Furnace and Practice of Casting-Forming-Welding II

Answer 1

Correct answer is (c) 80,000 cycles/second

To explain: None.