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Visual inspection may be done for which of the following activities?

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Visual inspection may be done for which of the following activities?

(a) Internal shrinkage

(b) Blowholes

(c) Porosity

(d) Counterbalance weights

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Question is taken from Metal Composition Testing, Inspection of Materials topic in section Testing of Materials, Foundry & Powder Metallurgy of Engineering Material & Metallurgy

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The correct choice is (d) Counterbalance weights

Easy explanation: Visual inspection is the simplest, fastest, and most commonly employed inspection technique. However, it requires greater skills of the inspector to identify the defects. It is mostly used for castings such as manhole covers, drains, counterbalance weights etc.

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