MCQOPTIONS
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MCQOPTIONS
This section includes 12 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. |
If the upstream face of the spillway is kept vertical, the crest shape should also confirm to the lower nappe of an inclined sharp-crested weir. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What is Bazin s profile? |
| A. | Profile for the lower nappe of a free-falling jet |
| B. | The profile obtained for the upper nappe of a free-falling jet |
| C. | Crest profile |
| D. | Profile of both upper and lower nappe |
| Answer» B. The profile obtained for the upper nappe of a free-falling jet | |
| 3. |
What is the satisfactory radius for the reverse bottom curve which is provided at the downstream end of the spillway? |
| A. | One-fourth of the spillway height |
| B. | Equal to the spillway height |
| C. | Half the value of the spillway height |
| D. | One-third of the spillway height |
| Answer» B. Equal to the spillway height | |
| 4. |
Which of the following plot is useful in determining the clearance for the spillway deck bridge and the top levels of walls on the side of the spillway? |
| A. | The coordinates of the lower nappe |
| B. | The coordinates of the upper nappe |
| C. | Both the coordinates of upper and lower nappe |
| D. | The origin or apex of crest |
| Answer» C. Both the coordinates of upper and lower nappe | |
| 5. |
According to US Army Corps, the u/s profile of ogee spillway extends up to _______________ |
| A. | x = 1.27 H<sub>d</sub> |
| B. | x = -1.27 H<sub>d</sub> |
| C. | x = 0.431 H<sub>d</sub> |
| D. | x = -0.431 H<sub>d</sub> |
| Answer» C. x = 0.431 H<sub>d</sub> | |
| 6. |
The W.E.S downstream profile of an ogee spillway can be represented by an equation:
|
| A. | nWhere x and y are the coordinates of the points on the crest profile and K and n for a vertical upstream spillway would respectively be___________________ |
| B. | 2.0 and 1.85 |
| C. | 0.5 and 1.85 |
| D. | 2.0 and 0.85 |
| E. | 0.5 and 0.85 |
| Answer» B. 2.0 and 1.85 | |
| 7. |
The spillway which can be called as an overflow spillway is essentially ___________________ |
| A. | an ogee spillway |
| B. | a shaft spillway |
| C. | a chute spillway |
| D. | a syphon spillway |
| Answer» B. a shaft spillway | |
| 8. |
If the head of the water over the spillway is less than the design head, then ________________ |
| A. | the pressure on the crest will be zero |
| B. | the pressure on the crest will be negative causing cavitation |
| C. | the discharge coefficient of the spillway is increased |
| D. | the discharge coefficient of the spillway will be reduced |
| Answer» E. | |
| 9. |
Which of the following spillway is an improvement over free overflow spillway? |
| A. | Straight drop spillway |
| B. | Open channel spillway |
| C. | Overflow spillway |
| D. | Siphon spillway |
| Answer» D. Siphon spillway | |
| 10. |
In the functioning of an ogee spillway, the operating head ______________________ |
| A. | frequently exceeds the design head |
| B. | rarely exceeds the design head |
| C. | never exceeds the design head |
| D. | has no connection with the design head |
| Answer» C. never exceeds the design head | |
| 11. |
If the operating head on an ogee spillway is more than the design head then ________________ |
| A. | the pressure on the crest will be zero |
| B. | the pressure on the crest will be negative causing cavitation |
| C. | the pressure on the crest will be positive |
| D. | the discharge coefficient of the spillway will be reduced |
| Answer» C. the pressure on the crest will be positive | |
| 12. |
Which of the following spillway is least suitable to earthen dams? |
| A. | Ogee spillway |
| B. | Chute spillway |
| C. | Side-channel spillways |
| D. | Shaft spillway |
| Answer» B. Chute spillway | |