The GATE Grind

GATE Irrigation and Drainage Engineering: Irrigation Water Conveyance and Application Methods – Previous Year Questions

11 GATE previous year questions on Irrigation Water Conveyance and Application Methods (Irrigation and Drainage Engineering, Agricultural Engineering) with answers and explanations, from every paper.

  1. GATE 2021 AG Q21 (1 mark, Numerical answer) – A drip system has application efficiency90%,minimum/maximum/average emitter flows45/65/50 L/h, manufacturer variation coefficient .07,and one emitter…
  2. GATE 2021 AG Q29 (1 mark, Numerical answer) – A pump supplies80 L/s for 10 h to 2 ha. Root-zone depth 50 cm;gravimetric moisture rises18%→30%;soil bulk density1500 kg/m³. Find water-application…
  3. GATE 2022 AG Q28 (1 mark, Numerical answer) – A 200 L/s stream diverted from a canal irrigates wheat for 8 hours. Conveyance efficiency is 75% and field runoff is 500 m³. Find application…
  4. GATE 2022 AG Q59 (2 marks, Numerical answer) – A 70%-efficient sprinkler system irrigates16 ha maize, ET6 mm/day. It operates20 h/day over 10 days. Find system capacity in L/s, to two decimals.
  5. GATE 2023 AG Q21 (1 mark, Multiple choice) – Sprinkler application rate is 1.17 cm/hour and discharge1.3 L/s. Discharge coefficient.9,uniformity coefficient.8,and along-lateral spacing20 m are…
  6. GATE 2023 AG Q22 (1 mark, Multiple choice) – A drip emitter has mean discharge4 L/hour, operating pressure110 kPa and emitter coefficient.3. Identify its type.
  7. GATE 2024 AG Q16 (1 mark, Multiple choice) – The time difference between advance and recession curves at a point during surface irrigation is called
  8. GATE 2024 AG Q41 (2 marks, Multiple choice) – Border-irrigation stored depths at 12 locations are50,49,48,47,46,45,44,43,42,41,40,39 mm. Find Christiansen uniformity coefficient in percent.
  9. GATE 2025 AG Q27 (1 mark, Multiple select) – Which statements about sprinkler irrigation are correct? Select all that apply.
  10. GATE 2026 AG Q33 (1 mark, Numerical answer) – A tubewell discharges 25\,m3/h for 10 h/day. Average irrigation depth is 80 mm and irrigation interval 20 days. At irrigation intensity 80%,find the…
  11. GATE 2026 AG Q65 (2 marks, Numerical answer) – Water penetration depths at 16 equally spaced border-strip stations, in mm, are .65,.83,.79,.87,.67,.85,.86,.68,.88,.77,.73,.59,.89,.63,.72,.70. Find…