Mechanical Engineering Exam > Mechanical Engineering Questions > If the specific energy at the upstream sectio...
Start Learning for Free
If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will be
- a)0.50m
- b)1.20m
- c)2.50m
- d)5.50m
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
If the specific energy at the upstream section of a rectangular channe...
Calculation of Maximum Height of Hump without Causing Afflux
Given data:
Specific energy at upstream section (E1) = 3 m
Minimum specific energy (Em) = 2.5 m
To determine the maximum height of hump without causing afflux, we can use the following formula:
h = (E1 - Em)/2
where h is the maximum height of hump.
Substituting the given values, we get:
h = (3 - 2.5)/2
h = 0.25 m
Therefore, the maximum height of hump without causing afflux is 0.25 m, which is closest to option A (0.50 m).
Explanation:
When water flows through a rectangular channel, it possesses a certain amount of energy, which is known as specific energy. This energy is a combination of kinetic energy and potential energy. The specific energy at any section of the channel depends on the depth of water, the velocity of flow, and the channel geometry.
If there is a sudden change in the channel geometry, such as a hump or a drop, the specific energy of the flow can be affected. If the hump is too high, it can cause the water level to rise upstream of the hump, resulting in a phenomenon called afflux. Afflux can cause flooding and damage to the surrounding areas.
To prevent afflux, it is important to determine the maximum height of the hump that can be allowed. This can be done by calculating the difference between the specific energy at the upstream section and the minimum specific energy that can be allowed without causing afflux (known as the critical specific energy). This difference is then divided by two to obtain the maximum height of the hump that can be allowed.
In this question, the specific energy at the upstream section is given as 3 m, and the minimum specific energy is given as 2.5 m. Substituting these values in the formula, we obtain the maximum height of the hump as 0.25 m. This means that a hump higher than 0.25 m can cause afflux and should be avoided.
Given data:
Specific energy at upstream section (E1) = 3 m
Minimum specific energy (Em) = 2.5 m
To determine the maximum height of hump without causing afflux, we can use the following formula:
h = (E1 - Em)/2
where h is the maximum height of hump.
Substituting the given values, we get:
h = (3 - 2.5)/2
h = 0.25 m
Therefore, the maximum height of hump without causing afflux is 0.25 m, which is closest to option A (0.50 m).
Explanation:
When water flows through a rectangular channel, it possesses a certain amount of energy, which is known as specific energy. This energy is a combination of kinetic energy and potential energy. The specific energy at any section of the channel depends on the depth of water, the velocity of flow, and the channel geometry.
If there is a sudden change in the channel geometry, such as a hump or a drop, the specific energy of the flow can be affected. If the hump is too high, it can cause the water level to rise upstream of the hump, resulting in a phenomenon called afflux. Afflux can cause flooding and damage to the surrounding areas.
To prevent afflux, it is important to determine the maximum height of the hump that can be allowed. This can be done by calculating the difference between the specific energy at the upstream section and the minimum specific energy that can be allowed without causing afflux (known as the critical specific energy). This difference is then divided by two to obtain the maximum height of the hump that can be allowed.
In this question, the specific energy at the upstream section is given as 3 m, and the minimum specific energy is given as 2.5 m. Substituting these values in the formula, we obtain the maximum height of the hump as 0.25 m. This means that a hump higher than 0.25 m can cause afflux and should be avoided.
Free Test
FREE
| Start Free Test |
Community Answer
If the specific energy at the upstream section of a rectangular channe...
Sp. energy at u/s, y1 = 3 m
min. sp. energy, y2 = 2.5 m
from power loss of hydraulic jump,
height of hump = y1 - y2
= 3.0 - 2.5 = 0.5
check it once.
I might be wrong as I hardly recall this topic which I left untouched since few couple of years.
min. sp. energy, y2 = 2.5 m
from power loss of hydraulic jump,
height of hump = y1 - y2
= 3.0 - 2.5 = 0.5
check it once.
I might be wrong as I hardly recall this topic which I left untouched since few couple of years.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer?
Question Description
If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer?.
If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer?.
Solutions for If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of hump without causing afflux will bea)0.50m b)1.20m c)2.50m d)5.50mCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup