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Mr. Dubey • 100.64K Points
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Q. Which of the following material is not used for rubbing on the surface to be inspected in scratch inspection?

  • (A) softer material
  • (B) hard material
  • (C) plastic
  • (D) lead babbitt
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Explanation by: Mr. Dubey
in scratch inspection method, a softer material like plastic or lead babbitt is rubbed over the surface to be inspected. it carries the impression of the scratches on it which can be easily visualised.

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