Allied & ICAR Exam Bank • ALLIED_0359 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Fluid Mechanics in SWCE

Subtopic: Fluid Mechanics in SWCE

Question Statement:

The discharge over a symmetrical $90^\circ$ triangular V-notch weir is proportional to the head $H$ above the vertex as:

Options:

  • (A) $H^{5/2}$
  • (B) $H^{3/2}$
  • (C) $H^2$
  • (D) $H^{1/2}$

Answer Key:

A

Step-by-Step Solution & Explanation

For a triangular notch, $Q = \frac{8}{15} C_d \sqrt{2g} \tan(\theta/2) H^{5/2} \propto H^{5/2}$.
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