Question

What is the other name for ultrasonic flaw detector?

(a) Destructive testing

(b) Magnetostrictive testing

(c) Non-destructive testing

(d) Echo testing

I had been asked this question in homework.

Asked question is from Magnetostriction Effect and Magnetostriction Generator in section Ultrasonics & Relativity of Engineering Physics I

Answer 1

The correct choice is (c) Non-destructive testing

The best explanation: Whenever there is a change in medium, then the ultrasonic waves will be reflected. Thus, from the intensity of the reflected echoes, the flaws are detected without destroying the material and hence this method is known as a non-destructive testing method.