Question

What are the values of voltages used for better surface quality?

(a) 1 – 2 V

(b) 2 – 3 V

(c) 3 – 5 V

(d) 5 – 8 V

The question was posed to me in examination.

This intriguing question originated from ECG-Accuracy, Applications, Advantages and disadvantages topic in division Hybrid Electrochemical Processes of Advanced Machining

Answer 1

Correct answer is (c) 3 – 5 V

Explanation: Voltages ranging between 3 and 5 V can be used for better surface quality in ECG.