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GATE 2020 PI – Question 26

Manufacturing Processes II · Machining · 1 mark · Multiple choice

Self-sharpening tendency of a conventional grinding wheel depends on its

  1. Structure
  2. Grade
  3. Grit hardness
  4. Grit size

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Correct answer: (B) Grade

Explanation

Wheel grade denotes the bond’s holding strength. It determines how readily dull abrasive grains fracture or are released to expose fresh cutting edges, controlling self-sharpening. Thus B. Abrasive hardness and grit size influence cutting, but are not the bond-retention property asked for.

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