MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 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. |
A siphon spillway in a concrete gravity dam is in the shape of ________________ |
| A. | U-shape |
| B. | Inverted U-shape |
| C. | Horizontal bend through the abutment |
| D. | Any straight line |
| Answer» C. Horizontal bend through the abutment | |
| 2. |
For a saddle siphon, the maximum operative head is 4.53 m. The width and height of the throat of the siphon are 5 m and 2.25 m respectively. The coefficient of discharge is 0.90. How many units are required to pass a flood of 350 cumecs? (Assume g = 10 m/s2) |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» E. | |
| 3. |
Morning glory is the _____________________________ |
| A. | special flared inlet of the shaft spillway of a dam of very small height |
| B. | special flared inlet of the shaft spillway of a large dam project |
| C. | a horizontal tunnel constructed in a shaft spillway across the body of a gravity dam to carry surplus reservoir water to the d/s river |
| D. | a horizontal tunnel constructed in a shaft spillway of an earthen dam through its foundation to carry surplus reservoir water to the d/s river |
| Answer» C. a horizontal tunnel constructed in a shaft spillway across the body of a gravity dam to carry surplus reservoir water to the d/s river | |
| 4. |
The structure which is not used in a shaft spillway is ________________ |
| A. | tunnel |
| B. | bridge |
| C. | radial gates |
| D. | radial piers |
| Answer» D. radial piers | |
| 5. |
The allowable maximum negative head on an average is equal to __________ |
| A. | 2.5 m or so |
| B. | 5 m or so |
| C. | 7.5 m or so |
| D. | 10 m or so |
| Answer» D. 10 m or so | |
| 6. |
A siphon spillway is sufficiently independent of the water surface elevation of the reservoir. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The crest of a siphon spillway is fixed at ________________ |
| A. | full reservoir level |
| B. | dead storage level |
| C. | maximum water level |
| D. | top of the dam |
| Answer» B. dead storage level | |
| 8. |
Which of the following spillway is designed in India by Ganesh Iyer? |
| A. | Saddle siphon spillway |
| B. | Saddle spillway |
| C. | Glory hole spillway |
| D. | Volute Siphon spillway |
| Answer» E. | |
| 9. |
An air vent is provided at FRL to break the siphoning action at that level in a ___________________ |
| A. | hooded type of siphon spillway |
| B. | tilted outlet type of siphon spillway |
| C. | saddle siphon spillway |
| D. | volute siphon spillway |
| Answer» D. volute siphon spillway | |
| 10. |
The only spillway among the following through which the discharge is almost at its capacity rate even from the start of its functioning is ________________ |
| A. | chute spillway |
| B. | side-channel spillway |
| C. | ogee spillway |
| D. | siphon spillway |
| Answer» E. | |
| 11. |
The only spillway among the following through which the discharge does not increase as fast as it increases in all others is _________________ |
| A. | chute spillway |
| B. | side-channel spillway |
| C. | ogee spillway |
| D. | shaft spillway |
| Answer» E. | |
| 12. |
The siphons installed over overflow dams constitute what are known as __________________ |
| A. | hooded type siphon spillway |
| B. | tilted outlet type siphon spillway |
| C. | discharge carriers |
| D. | baby siphons |
| Answer» B. tilted outlet type siphon spillway | |
| 13. |
The siphons installed within a gravity dam to spill the surplus reservoir water are known as ______________________ |
| A. | hooded type siphon spillway |
| B. | tilted outlet type siphon spillway |
| C. | both hooded and titled type siphon spillway |
| D. | shaft spillway |
| Answer» C. both hooded and titled type siphon spillway | |
| 14. |
A shaft spillway is located _______________________ |
| A. | inside the body of a gravity dam |
| B. | inside the upstream reservoir |
| C. | inside the downstream reservoir |
| D. | on the side flanks of the main dam |
| Answer» C. inside the downstream reservoir | |