Question

What are the surface roughness values obtained while machining spherical surfaces using Electro discharge machining?

(a) <0.1 µm

(b) <0.3 µm

(c) <0.5 µm

(d) <0.7 µm

I had been asked this question in my homework.

The above asked question is from EDM-Applications in section Thermal Processes of Advanced Machining

Answer 1

Correct choice is (a) <0.1 µm

The best I can explain: The surface roughness values obtained while machining of spherical surfaces are <0.1 µm in Electro discharge machining.