GATE Agricultural Process Engineering: Size Reduction and Material Handling – Previous Year Questions
10 GATE previous year questions on Size Reduction and Material Handling (Agricultural Process Engineering, Agricultural Engineering) with answers and explanations, from every paper.
- GATE 2021 AG Q34 – A 200 cm diameter ball mill uses10 cm balls for dry grinding, then20 cm balls for wet grinding. Find change in operating speed in rpm, to two…
- GATE 2021 AG Q48 – A crusher processes2 tonne/h using7.2 kW. Feed/product80%-passing sizes are4.75 and .5 mm. Find Bond work index.
- GATE 2022 AG Q19 – Size-reduction energy obeys dE/dX=-C/Xn. What is n in Rittinger’s law?
- GATE 2022 AG Q63 – A burr mill grinds sorghum at 200 kg/h from 4 mm to .336 mm using7.2 kW. At another gap the product is .306 mm with the same feed. Use Kick’s law to…
- GATE 2024 AG Q46 – Match mills P Attrition, Q Ball, R Hammer, S Roller with mechanisms1 Compression/shear,2 Impact/abrasion,3 Crushing/shear,4 Impact/shear.
- GATE 2024 AG Q64 – Sorghum-flour sieve analysis gives IS sieve numbers100,70,50,40,30,20,PAN with retained masses0,10.1,16.5,36.2,82.8,95.0,9.4 g. Find empirical mean…
- GATE 2025 AG Q34 – A ball mill has mill diameter 3600 mm and ball diameter 160 mm. Find critical speed in integer rpm, using g=9.81\,m/s2 and =3.14.
- GATE 2025 AG Q60 – A mill grinds locust beans from mean diameter 7 mm to .62 mm at 10 ton/hour, using 6.7 kW. At the same throughput, find power to grind to .25 mm using…
- GATE 2026 AG Q28 – Dust-laden air enters an 800 mm diameter cyclone at tangential velocity 30 m/s near the wall. Mean particle diameter is 100\, m. With…
- GATE 2026 AG Q44 – For black-pepper grinding,80% of feed passes a 6 mm screen and 80% of product passes 0.5 mm. Gross energy is 10 kWh/t. Under Bond’s law, with the same…