Question

What are range of diameter values obtained by drilling using EDM?

(a) 0.01 to 0.05 mm

(b) 0.1 to 0.5 mm

(c) 1 to 5 mm

(d) 10 to 15 mm

I have been asked this question by my school principal while I was bunking the class.

Enquiry is from EDM-Applications in portion Thermal Processes of Advanced Machining

Answer 1

Correct choice is (b) 0.1 to 0.5 mm

To explain I would say: Diameter values while drilled using Electro discharge machining, ranges from 0.10 to 0.50 mm.