GATE General Engineering: Engineering Materials – Previous Year Questions
14 GATE previous year questions on Engineering Materials (General Engineering, Production and Industrial Engineering) with answers and explanations, from every paper.
- GATE 2021 PI Q16 – Pearlite in eutectoid steel consists of alternating layers of α-ferrite and which phase?
- GATE 2021 PI Q29 – A mild-steel tensile specimen of gauge length 50 mm and diameter 10 mm is extended at 4 mm/min, first from 50 to 55 mm and then 55 to 60 mm. Neglect…
- GATE 2022 PI Q13 – Which metal has FCC structure?
- GATE 2022 PI Q39 – Eutectoid steel initially fully austenitic at 750°C cools to 35°C. Match P:water quench; Q:oil quench; R:air cool; S:furnace cool, with 1:coarse…
- GATE 2023 PI Q25 – Creep of mild steel at elevated temperature involves which behavior?
- GATE 2023 PI Q35 – A metal rod has initial diameter 14 mm. After a tensile test its fractured-end diameter is 12 mm. Find ductility as percentage reduction in area, to…
- GATE 2023 PI Q41 – Match room-temperature materials P: Si; Q: Fe; R: Al; S: Zn, with crystal structures 1: FCC; 2: HCP; 3: diamond cubic; 4: BCC.
- GATE 2023 PI Q46 – According to the Fe–C phase diagram, which microstructure occurs in plain carbon steel with 0.4 wt% carbon at room temperature?
- GATE 2024 PI Q17 – Which pure metal is HCP at room temperature?
- GATE 2024 PI Q37 – In the equilibrium iron–carbon diagram, eutectoid temperature and composition are 727°C and 0.77 wt% C. A 1.2 wt% C steel cools from 1000°C to room…
- GATE 2025 PI Q20 – The atomic packing factor of a body-centered cubic crystal is closest to .
- GATE 2025 PI Q51 – The iron–carbon eutectoid occurs at 723°C and 0.83 wt% C. Ferrite has 0.022 wt% C and cementite 6.67 wt% C. A 0.7 wt% C steel is cooled from 950°C…
- GATE 2026 PI Q18 – A plain-carbon steel of eutectoid composition is heat treated from austenitizing temperature to obtain ONLY bainite. Which heat treatment is used?
- GATE 2026 PI Q19 – An iron–carbon alloy at room temperature contains pro-eutectoid ferrite formed above the eutectoid temperature, and pearlite formed below it. Which…