GATE Manufacturing Processes II: Advanced Manufacturing – Previous Year Questions
9 GATE previous year questions on Advanced Manufacturing (Manufacturing Processes II, Production and Industrial Engineering) with answers and explanations, from every paper.
- GATE 2021 PI Q22 – A die-sinking EDM has pulse frequency 10 kHz and off-time 40 µs. Find duty factor.
- GATE 2021 PI Q58 – A fiber laser cuts 3 mm steel at 2 kW. Initial temperature 30°C; melting point 1530°C; absorptivity 50%; density 8000 kg/m³; specific heat 500…
- GATE 2022 PI Q17 – In electrical-discharge machining with discharge voltage V b, spark energy is proportional to which expression?
- GATE 2022 PI Q54 – ECM obeys dy/dt=/y-f, where gap y is in mm, time t in minutes and feed f in mm/min. Given λ = 6 × 10⁻³ cm²/min, find feed maintaining gap 0.1 mm, to…
- GATE 2023 PI Q19 – Which machining process essentially requires vacuum in the machining zone?
- GATE 2024 PI Q59 – ECM removes copper at constant rate 2 cm³/min. Find current (one decimal A), using melting point 1085°C, density 9 g/cm³, atomic weight 63 g/mol,…
- GATE 2025 PI Q38 – Match processes P: EDM; Q: LBM; R: CHM; S: WJM, with features 1: undercutting causes dimensional error; 2: cutting edible items; 3: deep square blind…
- GATE 2026 PI Q42 – Match processes P: laser beam machining; Q: abrasive waterjet machining; R: ion beam machining; S: mechanical milling, with dominant removal…
- GATE 2026 PI Q53 – In laser machining, t m=[( m- 0)k2H]2, with diffusivity α, melting temperature θ m, conductivity k and absorbed heat flux H. A uniform 1 kW beam of…