Question

For what value of machining depths, surface roughness sharply increases with depth of cut?

(a) <100 µm

(b) <200 µm

(c) <300 µm

(d) <400 µm

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

This intriguing question comes from CHM topic in section Chemical Processes of Advanced Machining

Answer 1

The correct choice is (b) <200 µm

Easy explanation: For material depths <200 µm, surface roughness increases with depth of cut.