Fluid Mechanics Multiple Choice Questions on Flow in Open Channels

This is an MCQ-based quiz on the topic of Fluid Mechanics Multiple Choice Questions on Flow in Open Channels.

This includes the following:-

Types of Flow in Channels
Geometrical Properties of Rectangular Section
Geometrical Properties of Triangular Section
Geometrical Properties of Trapezoidal Section
Chezy’s Equation
Manning’s Equation
Most Economic Rectangular Section
Most Economic Trapezoidal Section
Most Economic Circular Section
Specific Energy
Critical Flow in Different Channel Sections

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The flow characteristics of a channel does not change with time at any point. What type of flow is it?

Steady flow Uniform flow Laminar flow Turbulent flow

The Reynolds number for a flow in a channel is 1000. What type of flow is it?

Laminar Turbulent Transition Steady

The ratio of inertia force and gravitational force is called as ______

Reynolds number Stokes number Froude’s number Euler’s number

The Froude’s number for a flow in a channel section is 1. What type of flow is it?

Sub Critical Critical Super critical Tranquil

What is the Froude’s number for a channel having mean velocity 4.34 m/s and mean hydraulic depth of 3m?

0.4m 0.6m 0.7m 0.8m

Calculate the mean hydraulic radius for a channel having 20m2 cross sectional area and 50m of wetted perimeter.

0.4m 0.5m 0.6m 0.7m

Calculate the mean hydraulic depth of a channel having top width of 7m and cross sectional area of 35m2.

4m 5m 6m 7m

Estimate the section factor for a channel section having cross sectional area of 40m2 and hydraulic depth of 6m.

94.3 95.6 97.9 100

Calculate the Froude’s number for a channel having discharge of 261.03m3/s, cross sectional area of 42m2 and the top width being 6m.

0.65 0.72 0.38 0.75

Calculate the aspect ratio having channel width of 6m and depth of 8m.

0.75m 1.33m 1.50m 1.68m

The discharge and velocity of water in a rectangular channel are 75m^3/s and 5m/ s respectively. The hydraulic depth being 3m calculate the hydraulic radius.

1.36m 1.87m 1.98m 2.0m

Calculate the hydraulic diameter for a rectangular duct having 10m width and 6m depth.

5.5m 6.5m 7.5m 8.5m

The ratio of Hydraulic radius and Hydraulic depth is ½ and the top width of the channel is 6m, calculate the hydraulic depth of the channel.

1m 2m 3m 4m

The section factor of a rectangular channel is 111.80m. The discharge and velocity of water are 250 m3⁄s and 5 m⁄s respectively. Calculate the hydraulic depth of the channel.

2m 3m 4m 5m

Which geometric parameter determines the efficiency of the channel?

Hydraulic depth Hydraulic radius Section factor Normal depth

Quiz/Test Summary

Title: Fluid Mechanics Multiple Choice Questions on Flow in Open Channels

Questions: 15

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