Question

What is the value of gap voltage maintained in ECG process?

(a) 1 to 10 V

(b) 4 to 40 V

(c) 40 to 400 V

(d) 500 to 5000 V

This question was addressed to me in an internship interview.

This is a very interesting question from ECG-Material Removal Rate in chapter Hybrid Electrochemical Processes of Advanced Machining

Answer 1

Correct answer is (b) 4 to 40 V

Explanation: The value of the gap voltage in ECG process is 4 to 40 V.