GATE Irrigation and Drainage Engineering: Agricultural Drainage – Previous Year Questions

3 GATE previous year questions on Agricultural Drainage (Irrigation and Drainage Engineering, Agricultural Engineering) with answers and explanations, from every paper.

1. GATE 2022 AG Q55 (2 marks, Numerical answer) – Twelve100 m lateral drains are spaced50 m and connected to a collector. Water table falls50 cm in 4 days while mean collector discharge is 12 L/s.…
2. GATE 2024 AG Q32 (1 mark, Numerical answer) – A 16.95 km² watershed drains at average rate 2.8 m³/s. Find its drainage coefficient in cm, to two decimals.
3. GATE 2026 AG Q34 (1 mark, Numerical answer) – A tile drainage system with drainage coefficient 25 mm drains 0.2\,km2. Find average discharge in m3/s,to three decimals.