The upper surface of a weir over which water flows is known is
A. crest
B. nappe
C. sill
D. weir top
Answer: Option A
Solution (By Examveda Team)
The upper surface of a weir over which water flows is called the crest.The crest is the highest point of the weir, and it controls the flow of water over the structure.
The nappe refers to the sheet of water that flows over the weir crest.
The sill is the bottom edge or base of the weir structure, which supports the crest.
Weir top is not a technical term used in hydraulics and fluid mechanics.
Thus, the correct answer is crest.
This Question Belongs to Civil Engineering >> Hydraulics And Fluid Mechanics
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Comments (2)
A. 22.5 m/sec.
B. 33 m/sec.
C. 40 m/sec.
D. 90 m/sec.
A. the weight of the body
B. more than the weight of the body
C. less than the weight of the body
D. weight of the fluid displaced by the body
The difference of pressure between the inside and outside of a liquid drop is
A. $${\text{p}} = {\text{T}} \times {\text{r}}$$
B. $${\text{p}} = \frac{{\text{T}}}{{\text{r}}}$$
C. $${\text{p}} = \frac{{\text{T}}}{{2{\text{r}}}}$$
D. $${\text{p}} = \frac{{2{\text{T}}}}{{\text{r}}}$$
A. cannot be subjected to shear forces
B. always expands until it fills any container
C. has the same shear stress.at a point regardless of its motion
D. cannot remain at rest under action of any shear force
It's crest
It should be crest