The GATE Grind

GATE 2021 ME (ME2) – Question 17

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

The machining process that involves ablation is

  1. Abrasive jet
  2. Chemical
  3. Electrochemical
  4. Laser beam

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Show answer and explanation

Correct answer: (D) Laser beam

Explanation

Ablation removes material through intense localized energy input, typically rapid heating and vaporization. A laser beam can deliver that concentrated energy.

Therefore **laser beam machining (D)** is correct. Abrasive jets erode mechanically, while chemical and electrochemical processes dissolve material.