Question

X-rays are useful in detecting defects in casts up to what thickness?

(a) 60 mm

(b) 61 mm

(c) 62 mm

(d) 63 mm

I have been asked this question during an online exam.

This is a very interesting question from Radiography in division Non Destructive Techniques of Casting-Forming-Welding II

Answer 1

Correct option is (c) 62 mm

To explain I would say: The X-rays are waves of high amount of energy in them and are very useful in the detection of defects in the casts. They need a high amount of voltage supply for this and are able to detect defects up to a thickness of 62mm.