MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the head loss in a channel if the length of the back water curve is 30000m and the slope of the energy line is 4 -4. |
| A. | 8m |
| B. | 10m |
| C. | 12m |
| D. | 14m |
| Answer» D. 14m | |
| 2. |
The depth and widths of a trapezoidal channel section are 2m and 4m respectively and the side slope of 1H;5V, calculate the rate of change of depth if the rate of change of specific energy is 1.5 10-5. Given: S0=1 in 1000,C=35. |
| A. | 0.5 10<sup>-5</sup>m |
| B. | 1.0 10<sup>-5</sup>m |
| C. | 1.5 10<sup>-5</sup>m |
| D. | 2.0 10<sup>-5</sup>m |
| Answer» D. 2.0 10<sup>-5</sup>m | |
| 3. |
The ratio of bed slope and the slope of energy line is 2, calculate the value of slope of energy line if the length of back water curve is 20000m. Given: E1=2m and E2=5m. |
| A. | 0.5 10<sup>-4</sup> |
| B. | 1.0 10<sup>-4</sup> |
| C. | 1.5 10<sup>-4</sup> |
| D. | 2.0 10<sup>-4</sup> |
| Answer» D. 2.0 10<sup>-4</sup> | |
| 4. |
Which of the following assumptions is true in case of GVF? |
| A. | The flow is not steady |
| B. | The streamlines are parallel |
| C. | Pressure distribution is not hydrostatic |
| D. | Channel has varying alignment and shape |
| Answer» C. Pressure distribution is not hydrostatic | |
| 5. |
Calculate the value of Froude s number if the ratio of rate of change of specific energy and rate of change of depth is 0.9. |
| A. | 0.29 |
| B. | 0.30 |
| C. | 0.31 |
| D. | 0.32 |
| Answer» D. 0.32 | |
| 6. |
What happens to the depth of flow when there is an obstruction in the path? |
| A. | Remains the same |
| B. | Increases |
| C. | Decreases |
| D. | Flow stops |
| Answer» C. Decreases | |
| 7. |
Calculate the frictional slope of a triangular channel having depth 2.5m and side slope of 1H:2V if the rate of change of specific energy is 1.6 10-5m/s. Given:V=1.57 m/s |
| A. | 5.53 10<sup>-4</sup>m |
| B. | 6.53 10<sup>-4</sup>m |
| C. | 7.53 10<sup>-4</sup>m |
| D. | 8.53 10<sup>-4</sup>m |
| Answer» D. 8.53 10<sup>-4</sup>m | |
| 8. |
Calculate the value of frictional slope for a rectangular channel having width 5m and depth 3m. Given:V=2 m/s and n = 0.012. |
| A. | 2.01 10<sup>-4</sup> |
| B. | 3.01 10<sup>-4</sup> |
| C. | 4.01 10<sup>-4</sup> |
| D. | 5.01 10<sup>-4</sup> |
| Answer» E. | |
| 9. |
The channel is prismatic in case of a GVF. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Specific energy in GVF changes only under which of the following conditions. |
| A. | Difference between bed slope and slope of energy line |
| B. | Both bed slope and energy slope are equal |
| C. | Presence of bed slope alone |
| D. | Presence of energy slope alone |
| Answer» B. Both bed slope and energy slope are equal | |