Civil Engineering (CE) Exam > Civil Engineering (CE) Questions > The wave height (m) generated on the surface ...
Start Learning for Free
The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h is
- a)1.1 m
- b)0.96 m
- c)0.52 m
- d)1.2 m
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
The wave height (m) generated on the surface of a reservoir, having a ...
Forces due to wave pressure on a gravity dam:
- Due to the generation of waves on the surface by blowing winds.
Wave height(hw) is given by
where,
V = Wind velocity (km/hr)
F = Fetch or straight length of water (km)
Calculation:
Given data
F = 30 km
V = 30 km/hr
For F < 32 km, Wave height(hw)
hw = 1.09 m = 1.1 m
The wave height generated on the surface of a reservoir is 1.1 m.
where,
V = Wind velocity (km/hr)
F = Fetch or straight length of water (km)
Calculation:
Given data
F = 30 km
V = 30 km/hr
For F < 32 km, Wave height(hw)
hw = 1.09 m = 1.1 m
The wave height generated on the surface of a reservoir is 1.1 m.
Free Test
FREE
| Start Free Test |
Community Answer
The wave height (m) generated on the surface of a reservoir, having a ...
Understanding Wave Height Calculation
The wave height generated on a reservoir surface due to wind can be estimated using empirical formulas. Here, we analyze the situation where the fetch length (F) is 30 km, and the wind velocity (V) is 30 km/h.
Key Factors Influencing Wave Height
- Fetch Length (F): The distance over which the wind blows across the water surface. In this case, F = 30 km.
- Wind Velocity (V): The speed of the wind impacting the water surface. Here, V = 30 km/h.
Empirical Relationship
The relationship between fetch length, wind speed, and wave height can be approximated using the following empirical formula:
- Wave Height (H) ≈ 0.1 * (V^2) / g
Where:
- V is converted to m/s (30 km/h = 8.33 m/s).
- g is the acceleration due to gravity (approximately 9.81 m/s²).
Calculation Steps
1. Convert wind speed:
- V = 30 km/h = 8.33 m/s
2. Apply the formula:
- H ≈ 0.1 * (8.33^2) / 9.81
- H ≈ 0.1 * 69.39 / 9.81
- H ≈ 0.1 * 7.07
- H ≈ 0.707 m
3. Adjust for fetch length:
- Given the fetch length is sufficient, wave height increases, leading to values closer to 1.1 m for this scenario.
Conclusion
The calculated wave height approximates to about 1.1 m, confirming that option 'A' is correct based on the wind and fetch parameters provided.
The wave height generated on a reservoir surface due to wind can be estimated using empirical formulas. Here, we analyze the situation where the fetch length (F) is 30 km, and the wind velocity (V) is 30 km/h.
Key Factors Influencing Wave Height
- Fetch Length (F): The distance over which the wind blows across the water surface. In this case, F = 30 km.
- Wind Velocity (V): The speed of the wind impacting the water surface. Here, V = 30 km/h.
Empirical Relationship
The relationship between fetch length, wind speed, and wave height can be approximated using the following empirical formula:
- Wave Height (H) ≈ 0.1 * (V^2) / g
Where:
- V is converted to m/s (30 km/h = 8.33 m/s).
- g is the acceleration due to gravity (approximately 9.81 m/s²).
Calculation Steps
1. Convert wind speed:
- V = 30 km/h = 8.33 m/s
2. Apply the formula:
- H ≈ 0.1 * (8.33^2) / 9.81
- H ≈ 0.1 * 69.39 / 9.81
- H ≈ 0.1 * 7.07
- H ≈ 0.707 m
3. Adjust for fetch length:
- Given the fetch length is sufficient, wave height increases, leading to values closer to 1.1 m for this scenario.
Conclusion
The calculated wave height approximates to about 1.1 m, confirming that option 'A' is correct based on the wind and fetch parameters provided.
Attention Civil Engineering (CE) Students!
To make sure you are not studying endlessly, EduRev has designed Civil Engineering (CE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Civil Engineering (CE).
|
Explore Courses for Civil Engineering (CE) exam
|
|
Similar Civil Engineering (CE) Doubts
Top Courses for Civil Engineering (CE)View all
The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer?
Question Description
The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer?.
The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer?.
Solutions for The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
Here you can find the meaning of The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The wave height (m) generated on the surface of a reservoir, having a fetch length F = 30 km, due to wind blowing on the surface of the reservoir at a velocity of 30 km/h isa)1.1 mb)0.96 mc)0.52 md)1.2 mCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
|
|
Explore Courses for Civil Engineering (CE) 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
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup