The GATE Grind

GATE 2024 ME – Question 30

Machining and Machine Tool Operations · Abrasive and non-traditional machining processes · 1 mark · Multiple choice

The grinding wheel used to provide the best surface finish is

  1. A36L5V
  2. A54L5V
  3. A60L5V
  4. A80L5V

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Show answer and explanation

Correct answer: (D) A80L5V

Explanation

In the wheel code A36L5V the number 36 is the grit size. A higher grit number means finer abrasive grains, and finer grains leave a smoother surface. The four wheels are the same in every other respect, so the wheel with the highest grit number, A80L5V, gives the best finish.