Allied & ICAR Exam Bank • ALLIED_0395 MCQ • 1 Mark

Section 4: Soil and Water Conservation Engineering

Open Channel Flow

Subtopic: Open Channel Flow

Question Statement:

The critical flow condition in an open channel of arbitrary cross-section corresponds to:

Options:

  • (A) Froude number equal to unity ($Fr = 1$) and minimum specific energy for the given discharge
  • (B) Maximum wetted perimeter
  • (C) Maximum velocity head
  • (D) Reynolds number equal to 2000

Answer Key:

A

Step-by-Step Solution & Explanation

Critical flow occurs when $Fr = \frac{v}{\sqrt{g D}} = 1$, representing state of minimum specific energy for a given discharge, or maximum discharge for a given specific energy.
← Previous (ALLIED_0394) Next (ALLIED_0396) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test