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GATE 2021 PI – Question 20

Manufacturing Processes II · Machine Tools · 1 mark · Multiple choice

Which mechanism does NOT transform rotary motion to translation in machine tools?

  1. Screw–nut system
  2. Four-bevel-gear differential
  3. Cam and cam-follower system
  4. Whitworth mechanism

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Show answer and explanation

Correct answer: (B) Four-bevel-gear differential

Explanation

A bevel-gear differential combines/splits rotary motions and outputs rotation. Screw–nut, suitable cam/follower and Whitworth mechanisms can provide translation from rotary input. **B**.

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