Question

What is the value of moderate level of pH of electrolyte used?

(a) 1 – 2

(b) 2 – 4

(c) 4 – 10

(d) All of the mentioned

The question was asked by my school teacher while I was bunking the class.

This intriguing question originated from ECM-Process Characteristics topic in chapter Electrochemical Processes of Advanced Machining

Answer 1

Correct choice is (c) 4 – 10

The best I can explain: Moderate level of pH of electrolyte used in ECM range between 4 – 10.