Allied & ICAR Exam Bank • ALLIED_1231 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Micro-Irrigation Systems

Subtopic: Venturi Fertilizer Injector

Question Statement:

In a drip irrigation fertigation system, a Venturi injector suctions fertilizer stock solution into the pipeline by utilizing:

Options:

  • (A) The Bernoulli pressure drop created by high fluid velocity in a constricted throat section
  • (B) Centrifugal force from an electric motor
  • (C) Compressed air bubbles
  • (D) Thermal expansion of liquid fertilizer

Answer Key:

A

Step-by-Step Solution & Explanation

A venturi creates a localized low-pressure vacuum zone at its throat as fluid accelerates, drawing liquid fertilizer solution from an open tank directly into the pressurized irrigation main.
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