Question

What are the voltage values used in the process of ECH?

(a) 0.1 to 1 V

(b) 1 to 5 V

(c) 6 to 30 V

(d) 40 to 80 V

This question was posed to me in a national level competition.

This intriguing question comes from Electrochemical Honning-Introduction topic in section Hybrid Electrochemical Processes of Advanced Machining

Answer 1

Correct option is (c) 6 to 30 V

To explain I would say: The voltage values used in ECH range from 6 to 30 V.