What is the duration of sparks that are produced in Electro discharge machining?
(a) 0.001 – 1 µs
(b) 0.1 – 2000 µs
(c) 0.2 – 100 ms
(d) 100 – 2000 ms
This question was posed to me in an interview.
This interesting question is from EDM-Mechanism of Material Removal topic in section Thermal Processes of Advanced Machining