MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
If the velocity of flow through a wide rectangular channel is 2m⁄s and the rate of change of depth is 3×10-5m, calculate the manning’s constant of the channel if the uniform flow depth is 1m and yn=0.6m. Given: Critical depth = 0.5m. |
| A. | 0.38×10-3 |
| B. | 1.38×10-3 |
| C. | 2.38×10-3 |
| D. | 3.38×10-3 |
| Answer» D. 3.38×10-3 | |
| 2. |
Calculate the critical depth of a wide rectangular channel section if the normal depth and yn are 3.2m and 2.5m respectively. Given: dy/dx=3×10-4 m and S0=1/2000. |
| A. | 0.29m |
| B. | 1.29m |
| C. | 2.29m |
| D. | 3.29m |
| Answer» C. 2.29m | |
| 3. |
If dy/dx=3×10-4 m and the ratio of bed slope and slope of energy line is 0.7, calculate the value of slope of energy line if the uniform flow depth is 1.6m, critical depth is 1.2m. |
| A. | 5.25×10-4 |
| B. | 6.25×10-4 |
| C. | 7.2510-4 |
| D. | 8.25×10-4 |
| Answer» E. | |
| 4. |
If y = 2m and velocity of flow is 2.5m⁄s, calculate the critical depth. |
| A. | 0.36m |
| B. | 1.36m |
| C. | 2.36m |
| D. | 3.36m |
| Answer» C. 2.36m | |
| 5. |
The value of slope of energy line of a wide rectangular channel is 3×10-4 and the bed slope of the channel is 1 in 1500 using chezy’s equation, calculate the uniform flow depth if the depth during GVF is 2m. |
| A. | 1.61m |
| B. | 2.61m |
| C. | 3.61m |
| D. | 4.61m |
| Answer» C. 3.61m | |
| 6. |
The slope of the energy line of a wide rectangular channel is 4×10-5 and the bed slope of the channel is 1 in 1200 using manning’s equation, calculate the depth in GVF if the uniform depth of flow is 1.5m. |
| A. | 0.5m |
| B. | 0.6m |
| C. | 0.7m |
| D. | 0.8m |
| Answer» C. 0.7m | |
| 7. |
Which of the following equations is true considering Manning’s equation? |
| A. | \(\frac{S_f}{S_0} = (\frac{y_n}{y})^{\frac{10}{3}}\) |
| B. | \(\frac{S_f}{S_0} = (\frac{y}{y_n})^{\frac{10}{3}}\) |
| C. | \(\frac{S_0}{S_f} = (\frac{y}{y_n})^{\frac{10}{3}}\) |
| D. | \(\frac{S_0}{S_f} = (\frac{y_n}{y})^{\frac{10}{3}}\) |
| Answer» B. \(\frac{S_f}{S_0} = (\frac{y}{y_n})^{\frac{10}{3}}\) | |
| 8. |
Which of the following equations is true considering Chezy’s equation? |
| A. | \(\frac{S_0}{S_f} = (\frac{y_n}{y})^3\) |
| B. | \(\frac{S_0}{S_f} = (\frac{y}{y_n})^3\) |
| C. | \(\frac{S_f}{S_0} = (\frac{y_n}{y})^3\) |
| D. | \(\frac{S_f}{S_0} = (\frac{y_n}{y})^3\) |
| Answer» D. \(\frac{S_f}{S_0} = (\frac{y_n}{y})^3\) | |
| 9. |
Calculate the rate of change of depth of a wide rectangular channel having uniform flow depth of 2m and the depth during GVF is 1.5m. Given:yc=1m, S0=1 in 1500. |
| A. | 1.4×10-4m |
| B. | 2.4×10-4m |
| C. | 3.4×10-4m |
| D. | 4.4×10-4m |
| Answer» E. | |