The GATE Grind

GATE Farm Power: Tractors and Power Tillers – Previous Year Questions

22 GATE previous year questions on Tractors and Power Tillers (Farm Power, Agricultural Engineering) with answers and explanations, from every paper.

  1. GATE 2021 AG Q13 (1 mark, Multiple choice) – In the Society of Automotive Engineers tyre-axis convention, the moment about the z-axis is called .
  2. GATE 2021 AG Q51 (2 marks, Numerical answer) – A 20 kN two-wheel-drive tractor works in pure sandy soil, internal friction26.5°. Front/rear loads are35%/65%. Add2.5 kN to each rear wheel. Find…
  3. GATE 2022 AG Q24 (1 mark, Numerical answer) – A two-wheel-drive tractor has drive-wheel rolling radius 860 mm, engine-to-wheel speed ratio 98:1, transmission efficiency 86% and engine torque 520 N…
  4. GATE 2022 AG Q49 (2 marks, Numerical answer) – Tractor vibration has RMS acceleration3.15 m/s² and frequency80 Hz. Find RMS displacement amplitude in µm, to two decimals. Use π=3.14.
  5. GATE 2022 AG Q50 (2 marks, Numerical answer) – A two-wheel-drive tractor has static axle weights3 kN front and 9 kN rear, wheelbase2.1 m and pull7.5 kN. Perpendicular distance from the front…
  6. GATE 2023 AG Q52 (2 marks, Numerical answer) – A 2WD tractor weighs24 kN with 30% front/70% rear load. On pure sand maximum traction is 13 kN. Add1.5 kN to rear axle, neglect load transfer. Find…
  7. GATE 2023 AG Q56 (2 marks, Numerical answer) – A tractor chassis excites a seat at 20 rad/s. Damping is 400 N·s/m, critical damping1600 N·s/m, and seat-plus-operator mass80 kg. Find vibration…
  8. GATE 2024 AG Q13 (1 mark, Multiple choice) – Front-axle dynamic load is below 20% of total tractor weight. Which measure avoids longitudinal instability?
  9. GATE 2024 AG Q15 (1 mark, Multiple choice) – A towed rigid wheel of total weight W rolls on a hard horizontal surface and uphill on a hard plane inclined θ. Compared with the horizontal case, the…
  10. GATE 2024 AG Q27 (1 mark, Numerical answer) – Adult male heights at 5th,50th,95th percentiles are162,173,185 cm. Find minimum tractor-cab internal height for satisfactory clearance based on these…
  11. GATE 2024 AG Q52 (2 marks, Numerical answer) – An accelerometer at a seated tractor operator’s waist records RMS acceleration2.5 m/s². Improved seating reduces acceleration level5 dB. Find new RMS…
  12. GATE 2024 AG Q53 (2 marks, Numerical answer) – A 2WD tractor weighs20 kN and travels at actual3 km/hour with 12% slip. Front/rear dynamic loads are40%/60%. Net traction coefficient is .42. Axle…
  13. GATE 2025 AG Q21 (1 mark, Multiple choice) – Tripling RMS sound pressure increases the sound-pressure level by approximately how many dB?
  14. GATE 2025 AG Q22 (1 mark, Multiple choice) – For small tractor rotation radians about its CG, and longitudinal seat-to-CG distance R, the seat-base vertical motion R results from which motion?
  15. GATE 2025 AG Q29 (1 mark, Numerical answer) – A 2WD tractor has nominal rear-wheel radius .5 m. Rolling radius is 6% smaller. In 20 wheel revolutions the actual travel is 56 m. Find wheel slip in…
  16. GATE 2025 AG Q30 (1 mark, Numerical answer) – Front steering-pivot points are 1.2 m apart. During a turn on flat concrete, the inner and outer front-wheel steering angles are 50° and 35°. Find the…
  17. GATE 2025 AG Q54 (2 marks, Numerical answer) – An engine at 1200 rpm drives a rigid 1.2 m diameter wheel at 5 km/hour without slip or deformation. Gear reductions are 3:1 in the gearbox,4:1 in the…
  18. GATE 2025 AG Q56 (2 marks, Numerical answer) – A 4WD tractor has equal front and rear tread 1.25 m and CG height .85 m. It overturns while turning at 18 km/hour. Neglect tire-friction limitations…
  19. GATE 2026 AG Q19 (1 mark, Multiple choice) – A 2WD tractor has driving-axle dynamic normal load 28 kN, rolling radius 0.60 m, total driving-axle torque 10.7 kN·m, wheel slip 18%,and net traction…
  20. GATE 2026 AG Q20 (1 mark, Multiple choice) – RMS sound pressure increases by 50%. Approximately how much does sound-pressure level increase, in dB?
  21. GATE 2026 AG Q52 (2 marks, Numerical answer) – A 2WD tractor develops 30 kN gross traction with rear rolling radius .73 m. Each rear wheel has a planetary final drive:sun input with 26 teeth, fixed…
  22. GATE 2026 AG Q54 (2 marks, Numerical answer) – A stationary Ackerman-steer tractor carries 12 kN on each front wheel, nominal tire width b=.28 m. Assume uniform pressure over a circular print of…