Which of the following methods is best for examining surface flaws on the castings?(a) Pressure test(b) Magnetic particle inspection(c) Visual inspection(d) Acoustic emission testI have been asked this question during an interview.The question is from Inspection and Testing in section Inspection Testing in Foundries of Casting-Forming-Welding I

Which of the following methods is best for examining surface flaws on

1.	Which of the following methods is best for examining surface flaws on the castings?(a) Pressure test(b) Magnetic particle inspection(c) Visual inspection(d) Acoustic emission testI have been asked this question during an interview.The question is from Inspection and Testing in section Inspection Testing in Foundries of Casting-Forming-Welding I
Answer» Right answer is (C) Visual INSPECTION To explain I WOULD say: Visual inspection is a type of non -destructive testing technique that provides a means of detecting and examining the variety of surface flaws, such as surface finish, discontinuities and surface cracks on the CASTINGS. This method is very CHEAP and widely used because most of the surface defects and roughness can be observed easily.

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