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After invention of EDM, surface finish have improved by how much factor?(a) 10(b) 15(c) 20(d) 25I have been asked this question in homework.I'd like to ask this question from Electro Discharge Machining-Introduction in division Thermal Processes of Advanced Machining

Answer» CORRECT choice is (b) 15

For explanation: SURFACE finish have been improved by a FACTOR of 15 after the invention of EDM.


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