MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Irrigation Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the top width of the dam if the height of water stored is 84m. |
| A. | 5 m |
| B. | 2.5 m |
| C. | 5.55 m |
| D. | 7.75 m |
| Answer» B. 2.5 m | |
| 2. |
What is the formula for limiting height of a gravity dam? |
| A. | H<sub>max</sub> = f / (S<sub>c</sub> + 1) <sub>w</sub> |
| B. | H<sub>max</sub> = f / (S<sub>c</sub> 1) <sub>w</sub> |
| C. | H<sub>max</sub> = f / (S<sub>c</sub> + C) <sub>w</sub> |
| D. | H<sub>max</sub> = f / (S<sub>c</sub> 1) <sub>w</sub> |
| Answer» B. H<sub>max</sub> = f / (S<sub>c</sub> 1) <sub>w</sub> | |
| 3. |
What is the value of eccentricity for no tension condition in the dam? |
| A. | e < B/6 |
| B. | e > B/6 |
| C. | e > B/3 |
| D. | e < B/3 |
| Answer» B. e > B/6 | |
| 4. |
If the eccentricity of the resultant falls outside the middle third, the ultimate failure of the dam occurs by ______________ |
| A. | tension |
| B. | crushing |
| C. | sliding |
| D. | overturning |
| Answer» B. crushing | |
| 5. |
For triangular dam section of height H for just no tension under the action of water pressure, self-weight and uplift pressure, the minimum base width required is _____________ |
| A. | H / (S-1) |
| B. | H / S<sup>1/2</sup> |
| C. | H / (S 1)<sup>-1</sup> |
| D. | H / (S-1)<sup>1/2</sup> |
| Answer» E. | |
| 6. |
For usual values of permissible compressive stress and specific gravity of concrete, a high concrete gravity is the one whose height exceeds ______________ |
| A. | 48 m |
| B. | 70 m |
| C. | 88 m |
| D. | 98 m |
| Answer» D. 98 m | |
| 7. |
Calculate the value of minimum base width for an elementary triangular concrete gravity dam supporting 72 m height of reservoir water and full uplift? (Take specific gravity of concrete as 2.4 and coefficient of friction as 0.7) |
| A. | 36.28 m |
| B. | 39.77 m |
| C. | 51.5 m |
| D. | 73.5 m |
| Answer» E. | |
| 8. |
The two-dimensional stability analysis of gravity dams proves better for U-shaped valleys than for V-shaped valleys. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
When the reservoir is empty, the maximum vertical stress equal to ________________ |
| A. | At heel = 2W/B and at toe = 0 |
| B. | At heel = 0 and at toe = 2W/B |
| C. | At heel = toe = zero |
| D. | At heel = toe = 2W/B |
| Answer» B. At heel = 0 and at toe = 2W/B | |
| 10. |
When the reservoir is empty, the single force acting on it is the self-weight of the dam which acts at a distance of ____________ |
| A. | B/2 from the heel |
| B. | B/6 from the heel |
| C. | B/3 from the heel |
| D. | B/4 from the heel |
| Answer» D. B/4 from the heel | |