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 type of lining is adopted when the channels have become stable and no danger of scouring is expected? |
| A. | Brick lining |
| B. | Single burnt clay tile lining |
| C. | In-situ cement concrete lining |
| D. | Flexible membrane lining in the bed and rigid lining on the sides |
| Answer» E. | |
| 2. |
Which of the following statement is wrong about the requirement of good lining? |
| A. | The lining should be able to withstand the differential sub-soil pressure |
| B. | Brick lining, concrete lining or precast slab lining can be easily repaired as compared to cast-in-situ concrete lining |
| C. | The hydraulic efficiency generally reduces with time |
| D. | Brick tile lining may provide better abrasion resistance than cement concrete and boulder lining |
| Answer» E. | |
| 3. |
Pipe drains run _______________ |
| A. | longitudinally on the bed and transverse to the length of canal on the side slopes |
| B. | longitudinally to the length of the canal on the side slopes and transverse to the bed |
| C. | longitudinally to the length of the canal |
| D. | transverse to the bed |
| Answer» B. longitudinally to the length of the canal on the side slopes and transverse to the bed | |
| 4. |
Pressure relief valves may help in ___________ |
| A. | releasing the hydrostatic pressure |
| B. | holding the hydrostatic pressure |
| C. | increasing the hydrostatic pressure |
| D. | may increase or decrease the hydrostatic pressure |
| Answer» B. holding the hydrostatic pressure | |
| 5. |
The permeability of lining is also governed by the depth of water in the canal and type of subgrade soil. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Drainage relief pockets are provided ___________ |
| A. | at isolated locations in the bed as well as sides of the lined canal |
| B. | in the bed of the canal |
| C. | in the sides of the canal |
| D. | anywhere in the canal |
| Answer» B. in the bed of the canal | |
| 7. |
Which of the following is not a cause for the hydrostatic pressure on the lining? |
| A. | Seeping of the rainwater in the backfill |
| B. | When the water table remains below the canal bedc) The backfill is of low drainaged) The backfill is of high permeability (i.e. > 3 cm/se |
| C. | The backfill is of low drainage |
| D. | The backfill is of high permeability (i.e. > 3 cm/sec) |
| Answer» E. | |
| 8. |
Which of the following guideline is not recommended for the choice of lining when the bed width of the canal is up to 3 m? |
| A. | Single burnt clay tile lining or brick lining |
| B. | PCC slab lining |
| C. | Flexible membrane lining with adequate earth/tile cover |
| D. | In-situ cement concrete lining in bed as well as on sides |
| Answer» E. | |
| 9. |
The most economical type of lining is the one which shows ____________ |
| A. | minimum benefit-cost ratio |
| B. | maximum benefit-cost ratio |
| C. | zero benefit-cost ratio |
| D. | benefit-cost ratio = 1 |
| Answer» C. zero benefit-cost ratio | |
| 10. |
What is the safe limiting velocity for cement concrete lining? |
| A. | 1.5 m/s |
| B. | 2.2 m/s |
| C. | 2.7 m/s |
| D. | 1.8 m/s |
| Answer» D. 1.8 m/s | |