GATE AG 2013 • Q12 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Irrigation Water Conveyance and Application Methods

Subtopic: Design of irrigation channels and underground pipelines

Question Statement:

During land leveling of agricultural land for irrigation and drainage purposes, the acceptable deviation in elevation from the design value in metre is

Options:

  • (A) 0.015
  • (B) 0.025
  • (C) 0.055
  • (D) 0.150

Official Answer Key:

A

Step-by-Step Solution & Explanation

Standard land-grading/leveling practice for irrigated agriculture specifies a tight tolerance on finished-grade elevation to ensure uniform water application — the commonly cited acceptable deviation is ±0.015 m (±15 mm) from the design elevation. Answer: (A) 0.015.

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