Question

Visual inspection can be the complete inspection for detecting any defects in the castings.

(a) True

(b) False

The question was asked during an interview for a job.

I'm obligated to ask this question of Inspection and Testing in section Inspection Testing in Foundries of Casting-Forming-Welding I

Answer 1

The correct answer is (b) False

To elaborate: Visual inspection can observe most of the surface defects and roughness of the castings, but the defects at the interior part of the surfaces, which cannot be observed easily by naked eyes. So other methods of non-destructive testing are used where small areas are subjected to sensitive tests to detect surface blemishes.