1.

Which of the following takes place if the current density used is relatively high?(a) Smoothing(b) Finishing(c) Oxygen evolution(d) All of the mentionedI have been asked this question during an interview.The doubt is from Electro Polishing-Introduction in portion Chemical Processes of Advanced Machining

Answer» RIGHT option is (C) Oxygen evolution

To EXPLAIN: If the current LEVEL increases beyond the limiting value, PITTING takes place due to gas evolution.


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