Flow in Open Channels MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Flow in Open Channels, a fundamental topic in the field of Fluid Mechanics. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Flow in Open Channels MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Flow in Open Channels mcq questions that explore various aspects of Flow in Open Channels problems. Each MCQ is crafted to challenge your understanding of Flow in Open Channels principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Fluid Mechanics tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Flow in Open Channels MCQs are your pathway to success in mastering this essential Fluid Mechanics topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Flow in Open Channels. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Flow in Open Channels knowledge to the test? Let's get started with our carefully curated MCQs!

Flow in Open Channels MCQs | Page 11 of 20

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Q101.
Calculate the section factor for the most economical rectangular section having depth of 4m.

a.

32

b.

64

c.

128

d.

256

Discuss
Answer: (b).64
Q102.
The ratio between maximum discharge and top width of a rectangular channel is 91:50, calculate the depth of the channel if the bed slope is 1 in 3000 and C = 50.

a.

2m

b.

3m

c.

4m

d.

5m

Discuss
Answer: (a).2m
Q103.
The ratio between normal discharge and maximum discharge through a rectangular channel is 32:6, calculate the depth of the channel if the width of the channel is 4m and bed slope, chezy’s constant remains same.

a.

1m

b.

2m

c.

3m

d.

4m

Discuss
Answer: (a).1m
Q104.
The hydraulic radius of an economical rectangular section is 4m, calculate the discharge through the channel if the bed slope of the channel is 1 in 1000 and manning’s co efficient is 0.015.

a.

680m³⁄s

b.

690m³⁄s

c.

700m³⁄s

d.

710 m³⁄s

Discuss
Answer: (a).680m³⁄s
Q105.
Determine the top width length of the most economical trapezoidal channel section having depth y and side slope Z.

a.

\(\sqrt{1+Z^2}\)

b.

\(\frac{y}{2} \sqrt{1+Z^2}\)

c.

y\(\sqrt{1+Z^2}\)

d.

2y\(\sqrt{1+Z^2}\)

Discuss
Answer: (d).2y\(\sqrt{1+Z^2}\)
Q106.
Estimate the hydraulic radius of the most economical trapezoidal channel section having depth y and side slope Z.

a.

y⁄2

b.

y

c.

2y

d.

3y

Discuss
Answer: (a).y⁄2
Q107.
The top width of a most economical trapezoidal channel section is 7m and the side slope of the channel is 1H:2V, determine the depth of the channel section.

a.

2.13m

b.

3.13m

c.

4.13m

d.

5.13m

Discuss
Answer: (b).3.13m
Q108.
The top width of a most economical trapezoidal channel section is 8m, determine the hydraulic radius of the channel if the side slope is 1H:3V.

a.

1.8m

b.

1.9m

c.

2.0m

d.

2.1m

Discuss
Answer: (b).1.9m
Q109.
The base of the most economical trapezoidal channel section is 6m and the side slope is 1H:2V, calculate the maximum discharge through the channel if the bed slope is 1 in 1000 and C = 50.

a.

120.61 m³/s

b.

110.61 m³/s

c.

100.61 m³/s

d.

90.61 m³/s

Discuss
Answer: (c).100.61 m³/s
Q110.
Calculate the maximum discharge through a trapezoidal section having depth 3m, side slope 1H:4V and bed slope of 1 in 2000. Given: n = 0.025.

a.

19.09 m³/s

b.

20.09 m³/s

c.

21.09 m³/s

d.

22.09 m³/s

Discuss
Answer: (a).19.09 m³/s
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