Question

What are pulse duration values used for laser drilling?

(a) 0.01 to 0.25 ms

(b) 0.1 to 2.5 ms

(c) 1 to 25 ms

(d) 10 to 250 ms

I got this question in an interview for internship.

This interesting question is from LBM-Applications in chapter Thermal Processes of Advanced Machining

Answer 1

Correct choice is (b) 0.1 to 2.5 ms

To explain: Value of the duration of the pulse range from 0.1 to 2.5 ms.