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Using of a mate electrode in Electro discharge machining _____________ the surface roughness of material.

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Using of a mate electrode in Electro discharge machining _____________ the surface roughness of material.

(a) Increases

(b) Decreases

(c) Enhances

(d) None of the mentioned

I got this question by my school principal while I was bunking the class.

Query is from EDM-Surface Integrity topic in division Thermal Processes of Advanced Machining

1 Answer

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Best answer
The correct choice is (b) Decreases

The best I can explain: By using a mate electrode in Electro discharge machining, the surface roughness values are decreased.

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