The roughness profile of a surface is depicted below.The surface roughness parameter Ra (in andmu;m) is _______.(Important - Enter only the numerical value in the answer)Correct answer is '0'. Can you explain this answer?

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The roughness profile of a surface is depicted below.

The surface roughness parameter Ra (in μm) is _______.

(Important - Enter only the numerical value in the answer)

Correct answer is '0'. Can you explain this answer?

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Production And Industrial Engineering - PI 2016 GATE Paper (Practice Test)

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The roughness profile of a surface is depicted below.The surface roughness parameter Ra (in μm) is _______.(Important - Enter only the numerical value in the answer)Correct answer is '0'. Can you explain this answer?

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