MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Estimate the value of Sf if the value of bed slope is 1 in 800 and and dE⁄dx = 10-3m. |
| A. | 0.00015 |
| B. | 0.00025 |
| C. | 0.00035 |
| D. | 0.00045 |
| Answer» C. 0.00035 | |
| 2. |
Estimate the rate of change of specific energy having bed slope S0 and slope of total energy line Sf. |
| A. | \(\frac{dE}{dx}\) = Sf – S0 |
| B. | \(\frac{dE}{dx}\) = Sf – \(\frac{S_0}{2}\) |
| C. | \(\frac{dE}{dx}\) = S0 – Sf |
| D. | \(\frac{dE}{dx} = \frac{S_f}{2}\) – S0 |
| Answer» D. \(\frac{dE}{dx} = \frac{S_f}{2}\) – S0 | |
| 3. |
Determine the dynamic equation for the rate of change of depth having bed slope S0 and slope of total energy line Sf in terms of Froude’s number. |
| A. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-F_r^2}\) |
| B. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-F_r}\) |
| C. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\sqrt{F_r}}\) |
| D. | \(\frac{dy}{dx} = \frac{S_0-S_f}{F_r^2}\) |
| Answer» B. \(\frac{dy}{dx} = \frac{S_0-S_f}{1-F_r}\) | |
| 4. |
Determine the dynamic equation for the rate of change of depth having bed slope S0 and slope of total energy line Sf. |
| A. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{QT}{gA^2}}\) |
| B. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^2}}\) |
| C. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA^3}}\) |
| D. | \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA}}\) |
| Answer» D. \(\frac{dy}{dx} = \frac{S_0-S_f}{1-\frac{Q^2T}{gA}}\) | |
| 5. |
The discharge through a circular channel section having diameter 4m which is running half is 4.35 m3/s and the value of slope of energy line is Sf = 0.0003, calculate the value of C. |
| A. | 50 |
| B. | 45 |
| C. | 40 |
| D. | 35 |
| Answer» D. 35 | |
| 6. |
Calculate the discharge through a trapezoidal channel section if the depth of the channel is 3m and the base width is 3m. Given: C = 30, Sf = 0.0005, A = 12m2. |
| A. | 6.10 m3/s |
| B. | 7.10 m3/s |
| C. | 8.10 m3/s |
| D. | 9.10 m3/s |
| Answer» E. | |
| 7. |
Calculate Sf for a triangular channel if the depth of the channel is 5m and the side slope is 1H:2V. Given: Q = 5.80 m3/s , C = 40. |
| A. | 0.00010 |
| B. | 0.00011 |
| C. | 0.00012 |
| D. | 0.00013 |
| Answer» D. 0.00013 | |