Question Bank • QB_SUB_IDE_0174 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Sprinkler Irrigation Design & Distribution Uniformity

Subtopic: Sprinkler precipitation application rate

Question Statement:

For a pressure-compensating (PC) drip emitter, the emitter discharge exponent $x$ in the flow relationship $q = k H^x$ is close to:

Options:

  • (A) $x \approx 0.0$
  • (B) $x = 0.5$ (turbulent orifice flow)
  • (C) $x = 1.0$ (laminar flow)
  • (D) $x = 2.0$

Answer Key:

A

Step-by-Step Solution & Explanation

For an ideal pressure-compensating emitter, discharge is independent of pressure fluctuations, giving an exponent $x \to 0$.
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