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Castings having a larger grain size, will show how much surface roughness value?(a) Very low(b) Low(c) Medium(d) HighI had been asked this question in an interview for job.I'd like to ask this question from CHM topic in chapter Chemical Processes of Advanced Machining

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Right ANSWER is (d) High

The best EXPLANATION: In CASTINGS, as grain SIZE increases, surface roughness increases.



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