Question

Visual inspection is more economical than the other methods of non-destructive testing.

(a) True

(b) False

The question was asked in quiz.

My doubt is from Inspection and Testing topic in section Inspection Testing in Foundries of Casting-Forming-Welding I

Answer 1

Correct choice is (a) True

To explain: When other non-destructive techniques are used to detect surface cracks, visual inspection often provides a useful supplement. And the time delay and costs involved in other NDT methods would be unacceptable where large tonnage of products are produced each day. So, direct visual inspection is more economical to use for inspection of castings.