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When was the first significant development of ECM occurred?(a) 1920s(b) 1930s(c) 1950s(d) 1960sI had been asked this question in exam.Asked question is from Electro Chemical Machining-Introduction and Principle of electrolysis topic in chapter Electrochemical Processes of Advanced Machining

Answer»

The correct OPTION is (c) 1950S

Easiest explanation: After the first PATENT in 1929, the first development of ECM was DONE in 1950s.



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