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What happens when the current density is low in ECM?

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in Advanced Machining by (962k points)
What happens when the current density is low in ECM?

(a) Pitting occurs

(b) Etching occurs

(c) Pitting & Etching occurs

(d) None of the mentioned

This question was addressed to me during an interview.

Origin of the question is ECM-Process Characteristics topic in chapter Electrochemical Processes of Advanced Machining

1 Answer

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Best answer
The correct option is (c) Pitting & Etching occurs

For explanation: When current density is lower than optimum, then etching and pitting occurs which are undesired.

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