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 length of upstream talus if the length of the downstream loose stone talus is 20 m. |
| A. | 20 m |
| B. | 10 m |
| C. | 40 m |
| D. | 15 m |
| Answer» C. 40 m | |
| 2. |
Calculate the top width of the weir wall (B ) if the head of the water over the weir wall at the time of the maximum flood is 2 m. Take the specific gravity of the floor material as 2.4. |
| A. | 1.7 m |
| B. | 2 m |
| C. | 2.4 m |
| D. | 1.3 m |
| Answer» B. 2 m | |
| 3. |
Calculate the length of the downstream floor for a vertical drop weir having crest shutters, if the total maximum head loss is 2.5 m. Assume the value of Bligh s constant as 12. |
| A. | 11.62 m |
| B. | 11.80 m |
| C. | 12 m |
| D. | 10 m |
| Answer» B. 11.80 m | |
| 4. |
BY increasing the length of the floor on the upstream of the weir axis? |
| A. | the uplift pressure will increase below the floor downstream of the weir |
| B. | the uplift pressure will decrease below the floor downstream of the weir |
| C. | the uplift pressure will remain the same in both cases |
| D. | the uplift pressure may increase or decrease |
| Answer» C. the uplift pressure will remain the same in both cases | |
| 5. |
The width provided at the site for the river to flow and also the length of the weir is ____________ |
| A. | waterway |
| B. | launching apron |
| C. | top width |
| D. | bed mean width |
| Answer» B. launching apron | |
| 6. |
The minimum thickness (t) of the downstream floor required in the design of weir can be expressed by the equation ___________ |
| A. | h / (G+1) |
| B. | (h-t) / (G-1) |
| C. | h / (G-1) |
| D. | 1.33 h /(G-1) |
| Answer» D. 1.33 h /(G-1) | |
| 7. |
The ordinate of the uplift pressure at a point is found to be 2.8 m while designing the downstream floor thickness of a weir. If the relative density of concrete is 2.4 then the minimum thickness of the floor to be provided for resisting uplift pressure without accounting safety factor is _______ |
| A. | 1.16 m |
| B. | 2 m |
| C. | 0.8 m |
| D. | 2.8 m |
| Answer» C. 0.8 m | |
| 8. |
What is the correct calculation for balance floor length? |
| A. | Total length (the downstream length + twice the cut-off length) |
| B. | Total length + (the downstream length + twice the cut-off length) |
| C. | The downstream length twice the cut-off length |
| D. | The downstream length + twice the cut-off length |
| Answer» B. Total length + (the downstream length + twice the cut-off length) | |
| 9. |
What is the empirical formula given by Bligh for the design of the top width of the weir wall? |
| A. | B = H / (G-1) |
| B. | B = H / (G-1)<sup>1/2</sup> |
| C. | B = (H + height of weir)/G |
| D. | B = H / (G+1) |
| Answer» C. B = (H + height of weir)/G | |
| 10. |
What is the formula for the upstream apron length according to Bligh? |
| A. | 2.208 (CH)<sup>1/2</sup> |
| B. | 2.208 (H/13)<sup>1/2</sup> |
| C. | 2.208 (H)<sup>1/2</sup> |
| D. | 2.208 (C/H)<sup>1/2</sup> |
| Answer» B. 2.208 (H/13)<sup>1/2</sup> | |