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GATE 2026 PI – Question 42

Manufacturing Processes II · Advanced Manufacturing · 2 marks · Multiple choice

Match processes P: laser beam machining; Q: abrasive waterjet machining; R: ion beam machining; S: mechanical milling, with dominant removal mechanisms 1: impact erosion; 2: sputtering; 3: melting and vaporization; 4: shearing.

  1. P–1; Q–2; R–3; S–4
  2. P–3; Q–1; R–2; S–4
  3. P–4; Q–3; R–2; S–1
  4. P–1; Q–3; R–4; S–2

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Show answer and explanation

Correct answer: (B) P–3; Q–1; R–2; S–4

Explanation

Laser machining removes material thermally by melting and vaporization. Abrasive waterjets remove material by particle impact erosion. Ion beams sputter surface atoms. Milling forms chips through shear deformation. Thus **P–3, Q–1, R–2, S–4: B**.

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