GATE Farm Machinery: Machine Design – Previous Year Questions
15 GATE previous year questions on Machine Design (Farm Machinery, Agricultural Engineering) with answers and explanations, from every paper.
- GATE 2021 AG Q26 – A gear pump displaces120 cm³/rev at 1500 rpm against18 MPa. Torque efficiency90%. Find actual driving torque in N m, to two decimals. Use π=3.14.
- GATE 2021 AG Q38 – A 6 mm diameter bushy-crop stem is cut by impact50 mm above soil. Young modulus1500 N/mm²,ultimate tensile strength35 N/mm². Based on the entire…
- GATE 2021 AG Q52 – A PTO rotavator has 30 cm rotor radius,20 L-blades of 12 cm width, attached at 7 cm radial distance. Forward speed 4.5 km/h, depth 12 cm. A 150 N…
- GATE 2021 AG Q54 – Two involute gears transmit1 kW at 20° pressure angle. Larger gear pitch diameter 20 cm and speed 600 rpm;one tooth pair carries load at a time. Find…
- GATE 2022 AG Q25 – A double-acting hydraulic cylinder has bore 76 mm and rod diameter 25 mm. Pump flow is 40 L/min during either stroke. Find retraction velocity in m/s,…
- GATE 2022 AG Q26 – An open V-belt joins effective pulley diameters .25 m and .65 m at 1 m centre distance. Find the smaller pulley wrap angle in degrees, to two…
- GATE 2022 AG Q54 – A flange has one10 mm diameter mild-steel pin in single shear, ultimate shear strength42 MPa. Pin axis is 100 mm from shaft axis; shaft runs300 rpm.…
- GATE 2023 AG Q31 – Under declining-balance depreciation, a tractor is worth50% of purchase price after four years. Find constant annual depreciation rate in percent, to…
- GATE 2023 AG Q37 – Force F=5 i-10 j+8 k acts through the origin. Find its moment about A=(3,4,8),with the right-hand/counterclockwise sign convention.
- GATE 2023 AG Q55 – A single-disc clutch transmits10 kW at 1400 rpm. Mean axial contact pressure.07 N/mm² and friction coefficient.25. Diameter/lining face-width ratio is…
- GATE 2024 AG Q28 – A chain drive reduces a solar thresher motor from 240 rpm to 120 rpm. Driver has 20 teeth;driven sprocket pitch-circle diameter is 600 mm. Find chain…
- GATE 2025 AG Q55 – A uniform solid round shaft transmits 25 kW at 540 rpm. Allowable shear stress is 35 MPa and maximum torque is 20% above mean torque. Neglect bending.…
- GATE 2026 AG Q38 – A massless thin flat belt drives a 0.6 m diameter output pulley at 500 rpm without slip. Contact angles are 190° on this pulley and 170° on the…
- GATE 2026 AG Q39 – A 540 rpm tractor PTO drives a tiller through a flange coupling with a shear pin parallel to the shaft,60 mm from its axis. The tiller normally needs…
- GATE 2026 AG Q56 – A tractor PTO shaft drives a grain auger through spur-gear reduction;the auger rotates at 540 rpm. The PTO driving gear has pitch diameter .18 m and…