The GATE Grind

GATE Manufacturing Processes: Welding and joining – Previous Year Questions

10 GATE previous year questions on Welding and joining (Manufacturing Processes, Metallurgical Engineering) with answers and explanations, from every paper.

  1. GATE 2021 MT Q50 (2 marks, Numerical answer) – A 3000 W machine makes a continuous fillet weld at 6 mm/s. Heat-transfer factor is 0.6, melting factor 0.5, and unit energy for melting 6 J/mm3. The…
  2. GATE 2022 MT Q21 (1 mark, Multiple choice) – Which one of the following figures illustrates a lap joint with fillet weld?
  3. GATE 2022 MT Q44 (2 marks, Multiple select) – Which of the following parameter(s) influence(s) the melting rate of the consumable wire in a gas metal arc welding process?
  4. GATE 2022 MT Q59 (2 marks, Numerical answer) – Steel plates are autogenously GTA welded with arc efficiency 0.65. The first weld uses 200 A, 18 V, and speed 0.002 m/s. The second uses speed 0.0022…
  5. GATE 2023 MT Q46 (2 marks, Multiple choice) – Match welding techniques with the most appropriate applications. Column I: P. Submerged arc welding Q. Electroslag welding R. Shielded metal arc…
  6. GATE 2024 MT Q49 (2 marks, Multiple select) – Which of the following statements is/are correct for joining processes?
  7. GATE 2024 MT Q65 (2 marks, Numerical answer) – Arc welding has actual heat input 200 J mm-3, current 200 A, voltage 20 V, weld cross-sectional area 2 mm2, and heat-transfer efficiency 0.9. Welding…
  8. GATE 2025 MT Q46 (2 marks, Multiple select) – Which of the following statements is/are CORRECT with respect to fusion welding and solid-state welding of metals and alloys?
  9. GATE 2025 MT Q47 (2 marks, Multiple select) – Which of the following welding processes does NOT / do NOT utilize consumable electrode?
  10. GATE 2026 MT Q14 (1 mark, Multiple choice) – Which one of the following fusion-welding techniques results in the least heat-affected zone (HAZ)?