The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)
A. $$\frac{{\text{H}}}{3}$$
B. $$\frac{{2{\text{H}}}}{3}$$
C. $$\frac{{\text{H}}}{2}$$
D. $$\frac{{2{\text{H}}}}{5}$$
Answer: Option B
Solution(By Examveda Team)
In the field of hydraulics and fluid mechanics, a broad-crested weir is employed to manage water flow in open channels. This structure is pivotal for measurement and control purposes. The discharge over such a weir is contingent on the depth of flow, which is referred to as the head over the weir. Various empirical equations govern the relationship between discharge and head.Among the given options, the correct choice is Option B: $$\frac{{2H}}{3}$$. This signifies that the discharge over a broad-crested weir reaches its maximum when the depth of flow (head) equals two-thirds of the available head (H). This specific proportion maximizes the flow rate of discharge over the weir.
Therefore, the accurate answer is Option B: $$\frac{{2H}}{3}$$.
This Question Belongs to Civil Engineering >> Hydraulics And Fluid Mechanics
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Comments ( 7 )
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
B is correct
Answer should be B
Correct Answer is B
ANSWER IS B. MC ADMIN LEARN CIVIL ENGINEERING
ANSWER IS B. ADMIN LEARN SOMEHING
Wrong answer.
Correct answer is 2h/3
Explain please