What is value of surface finish achieved, when we use the abrasive of grit number 240?(a) 0.01 – 0.08 μm(b) 0.08 – 0.13 μm(c) 0.13 – 0.25 μm(d) 0.25 – 0.38 μmI got this question in an international level competition.I want to ask this question from USM topic in portion Mechanical Processes of Advanced Machining

What is value of surface finish achieved, when we use the abrasive of

1.	What is value of surface finish achieved, when we use the abrasive of grit number 240?(a) 0.01 – 0.08 μm(b) 0.08 – 0.13 μm(c) 0.13 – 0.25 μm(d) 0.25 – 0.38 μmI got this question in an international level competition.I want to ask this question from USM topic in portion Mechanical Processes of Advanced Machining
Answer» RIGHT OPTION is (d) 0.25 – 0.38 μm To explain I would say: The surface roughness obtained, when machined using ABRASIVE of GRIT NUMBER 240, is between 0.25 – 0.38 μm.

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