Question

Typical roundness error in glass, resulted due to lateral vibrations is between?

(a) 01 –20 μm

(b) 20 – 40 μm

(c) 40 – 140 μm

(d) 150 – 250 μm

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

Asked question is from USM in section Mechanical Processes of Advanced Machining

Answer 1

Right option is (c) 40 – 140 μm

Best explanation: The roundness is between 40 – 140 μm while machining graphite by Ultrasonic Machining.