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What are the magnitude of voltages used in Electro discharge machining?(a) 1 to 20 V(b) 20 to 120 V(c) 120 to 220 V(d) 220 to 320 VThis question was posed to me during an internship interview.My doubt is from EDM-Mechanism of Material Removal topic in portion Thermal Processes of Advanced Machining

Answer»

Right choice is (b) 20 to 120 V

To ELABORATE: In EDM, the MAGNITUDE of voltages range between 20 and 120 V.



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