Question Bank • QB_SUB_IDE_0007 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Soil-Water-Plant Relationship

Subtopic: Measurement of infiltration, soil moisture and irrigation water infiltration

Question Statement:

A double-ring infiltrometer is preferred over a single-ring infiltrometer primarily because:

Options:

  • (A) The outer buffer ring minimizes lateral divergence of water flow beneath the inner measuring cylinder
  • (B) It operates without needing water
  • (C) It doubles the measured infiltration rate automatically
  • (D) It measures groundwater table depth directly

Answer Key:

A

Step-by-Step Solution & Explanation

The outer ring acts as a hydraulic buffer, ensuring that flow beneath the inner cylinder is strictly one-dimensional vertical infiltration.
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