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. |
Which of the following helps in dissipating the residual energy and to reduce the length of the jump or the basin? |
| A. | Dentated sills |
| B. | Chute blocks |
| C. | Roller bucket |
| D. | Baffle piers |
| Answer» B. Chute blocks | |
| 2. |
_____________________ are suitable only for low spillways or weirs. |
| A. | Chute blocks |
| B. | Sloping aprons |
| C. | Baffle wall or friction blocks |
| D. | Roller buckets |
| Answer» D. Roller buckets | |
| 3. |
In the case of dam spillways, the approaching Froude number usually lies in the range of __________ |
| A. | less than 2.5 m |
| B. | 2.5 4.5 |
| C. | 4.5 9.0 |
| D. | more than 9.0 |
| Answer» D. more than 9.0 | |
| 4. |
Standard stilling basin is provided at the toe of a dam spillway for energy dissipation is usually provided with auxiliary devices like chute blocks and dentated sills for the basic purpose of reducing the length of the stilling basin from about ________________ |
| A. | 6 y<sub>2</sub> to 4 y<sub>2</sub> |
| B. | 4 y<sub>2</sub> to 2 y<sub>2</sub> |
| C. | 6 y<sub>2</sub> to 2 y<sub>2</sub> |
| D. | 3 y<sub>2</sub> to y<sub>2</sub> |
| Answer» B. 4 y<sub>2</sub> to 2 y<sub>2</sub> | |
| 5. |
The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________ |
| A. | a weak jump |
| B. | an oscillating jump |
| C. | rough and choppy jump |
| D. | steady jump |
| Answer» E. | |
| 6. |
Which of the following stilling basin is applicable to only rectangular cross-sections? |
| A. | U.S.B.R stilling basin-II |
| B. | U.S.B.R stilling basin-IV |
| C. | U.S.B.R stilling basin-I |
| D. | U.S.B.R stilling basin-III |
| Answer» C. U.S.B.R stilling basin-I | |
| 7. |
When the Froude number is in the range of 2.5 to 4.5, the jump is ____________________ |
| A. | weak and energy loss is low |
| B. | troublesome and oscillating |
| C. | steady jump |
| D. | strong jump |
| Answer» C. steady jump | |
| 8. |
Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________ |
| A. | less than 4.5 |
| B. | more than 4.5 |
| C. | less than 2.5 |
| D. | more than 2.5 |
| Answer» C. less than 2.5 | |
| 9. |
A very steady and stable hydraulic jump is usually formed in the flows involving the approaching Froude number in the range of _____________________ |
| A. | less than 2.5 |
| B. | 2.5 to 4.5 |
| C. | 4.5 to 9.0 |
| D. | more than 9.0 |
| Answer» D. more than 9.0 | |
| 10. |
A troublesome and oscillating hydraulic jump is normally met in cases of _____________ |
| A. | weirs and barrages |
| B. | overflow spillways of dams |
| C. | weirs |
| D. | large spillways |
| Answer» B. overflow spillways of dams | |