MCQOPTIONS
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MCQOPTIONS
This section includes 246 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. |
The science which deals with the measurement of water is called hydrometry. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The precipitation caused by lifting of warm moisture laden air masses due to topographic barriers, is called |
| A. | convective precipitation |
| B. | orographic precipitation |
| C. | cyclonic precipitation |
| D. | none of these |
| Answer» C. cyclonic precipitation | |
| 3. |
A degrading river is a scouring river. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 4. |
Intensity of irrigation should be increased in order to prevent the area from water logging. |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 5. |
Which of the following satement is correct? |
| A. | In Lacey's silt theory, the derivation of the various formulae depends upon a single factor 'f'. |
| B. | Lacey's equation includes a concentration of silt as variable. |
| C. | Lacey properly define the silt grade and silt charge. |
| D. | Lacey introduced semi-ellipse as ideal shape of a regime channel. |
| Answer» B. Lacey's equation includes a concentration of silt as variable. | |
| 6. |
Lacey assumed that silt is kept in suspension because of the normal components of eddies generated from the |
| A. | bed only |
| B. | side only |
| C. | whole perimeter |
| D. | none of these |
| Answer» D. none of these | |
| 7. |
When the bed level of the canal is higher than the highest flood level (H.F.L.) of the drainage, then the cross drainage work is said to be |
| A. | aqueduct |
| B. | super-passage |
| C. | canal syphon |
| D. | syphon aqueduct |
| Answer» B. super-passage | |
| 8. |
According to Lacey, a channel is said to be in regime, if |
| A. | it flows in incoherent unlimited alluvium of the same character as that transported material |
| B. | its discharge is constant |
| C. | the silt grade and the silt charge are constant |
| D. | all of the above |
| Answer» E. | |
| 9. |
In Bligh's creep theory |
| A. | there is no distinction between horizontal and vertical creep |
| B. | loss of head does not take place in the same proportion as creep length |
| C. | the uplife pressure distribution is not linear, but follows a sine curve |
| D. | all of the above |
| Answer» E. | |
| 10. |
The soil becomes, practically, infertile if its p-H value is |
| A. | 0 |
| B. | 7 |
| C. | 11 |
| D. | 14 |
| Answer» D. 14 | |
| 11. |
According to Khosla's theory, the critical hydraulic gradient for alluvial soils is approximately equal to |
| A. | 1 |
| B. | 1.5 |
| C. | 2 |
| D. | 2.5 |
| Answer» B. 1.5 | |
| 12. |
The floor of the aqueduct is subjected to uplift pressure due to |
| A. | seepage of water from the canal to the drainage |
| B. | sub-soil water table in the drainage bed |
| C. | both (a) and (b) |
| D. | none of the above |
| Answer» D. none of the above | |
| 13. |
Dicken's formula for high flood discharge is useful for catchments in |
| A. | Southern India |
| B. | Northern India |
| C. | Eastern India |
| D. | Western India |
| Answer» C. Eastern India | |
| 14. |
Okhla weir on Yamuna river, in Delhi, is an example of |
| A. | vertical drop weir |
| B. | drystone slope weir |
| C. | concrete slope weir |
| D. | parabolic weir |
| Answer» C. concrete slope weir | |
| 15. |
When the levels are such that the F.S.L. of the canal is much above the bed level of the drainage trough, so that the canal runs under syphonic action under the trough, the structure provided is known as |
| A. | syphon aqueduct |
| B. | level crossing |
| C. | canal syphon |
| D. | super syphon |
| Answer» D. super syphon | |
| 16. |
A fall, which maintains the depth is a |
| A. | trapezoidal notch fall |
| B. | rectangular notch fall |
| C. | low weir fall |
| D. | all of these |
| Answer» E. | |
| 17. |
Irrigation is said to be a science of survival. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 18. |
In a lined canal, the resistance to flow decreases and velocity of flow increases. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 19. |
Kennedy gave a relation between |
| A. | velocity and hydraulic mean depth |
| B. | area and velocity |
| C. | critical velocity and the depth of flowing water |
| D. | all of the above |
| Answer» D. all of the above | |
| 20. |
The narrow strip of land left at the ground level between the inner toe of the bank and top edge of the cutting, is known as |
| A. | free board |
| B. | dowel |
| C. | inspection roadway |
| D. | berm |
| Answer» E. | |
| 21. |
Flood frequency denotes the likelyhood of flood being equalled or exceeded. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 22. |
Check flooding method of irrigation is used for |
| A. | closed growing crops |
| B. | tracts with flat gradients |
| C. | crops which can stand inundation of water for sometime |
| D. | crops such as sugarcane, potatoes etc. |
| Answer» D. crops such as sugarcane, potatoes etc. | |
| 23. |
A groyne |
| A. | contracts a river channel to improve its depth |
| B. | silts up the area in the vicinity by creating a slack flow |
| C. | trains the flow along a certain course |
| D. | all of the above |
| Answer» E. | |
| 24. |
The height of dowel above the road level should not be more than |
| A. | 10 cm |
| B. | 20 cm |
| C. | 30 cm |
| D. | 40 cm |
| Answer» D. 40 cm | |
| 25. |
Run-off is measured in |
| A. | m3/s |
| B. | m3/min |
| C. | m3/h |
| D. | none of these |
| Answer» B. m3/min | |
| 26. |
Water logging takes place due to |
| A. | rise |
| B. | fall |
| Answer» B. fall | |
| 27. |
The free board in a channel is governed by the |
| A. | size of the canal |
| B. | location of the canal |
| C. | water surface fluctuations |
| D. | all of these |
| Answer» E. | |
| 28. |
Outlet discharge for a particular crop is given by |
| A. | Area / Outlet factor |
| B. | Outlet factor / Area |
| C. | Area x Outlet factor |
| D. | none of these |
| Answer» B. Outlet factor / Area | |
| 29. |
According to Khosla's theory, the exit gradient in the absence of a downstream cut-off is |
| A. | zero |
| B. | unity |
| C. | infinity |
| D. | none of these |
| Answer» D. none of these | |
| 30. |
Which of the following method is useful for obtaining values of flood discharges for a high recurrence interval? |
| A. | California method |
| B. | Hazen's method |
| C. | Gumbel's method |
| D. | all of these |
| Answer» D. all of these | |
| 31. |
In a canal section, which is in partial filling and partial cutting |
| A. | the full supply level of the canal is above the natural surface level |
| B. | the bed level of the canal is below the natural surface level |
| C. | the full supply level of the canal is below the natural surface level |
| D. | the bed level of the canal is above the natural surface level |
| Answer» F. | |
| 32. |
The consumptive use of water of a crop |
| A. | is measured as the volume of water per unit area |
| B. | is measured as depth of water on irrigated area |
| C. | may be supplied partly by precipitation and partly by irrigation |
| D. | all of the above |
| Answer» E. | |
| 33. |
A deflecting groyne has a much |
| A. | longer |
| B. | shorter |
| Answer» C. | |
| 34. |
According to Lacey |
| A. | the silt is kept in suspension due to the force of vertical eddies |
| B. | the eddies are generated from bed and sides, both normal to the surface of generation |
| C. | the vertical component of eddies generated from sides will also support the silt |
| D. | all of the above |
| Answer» E. | |
| 35. |
In a syphon, the underside of the trough carrying drainage water is |
| A. | lower than |
| B. | higher than |
| C. | in level with |
| Answer» C. in level with | |
| 36. |
The most economical section of a lined canal is |
| A. | rectangular section with circular bottom for small discharges |
| B. | triangular section with circular bottom for small discharges |
| C. | trapezoidal section with rounded corners for higher discharges |
| D. | none of the above |
| Answer» F. | |
| 37. |
In a barrage, crest level is kept |
| A. | low with large gates |
| B. | high with large gates |
| C. | high with small gates |
| D. | low with small gates |
| Answer» B. high with large gates | |
| 38. |
The time (in days) that crop takes from the instant of its sowing to that of its harvest, is known as |
| A. | base |
| B. | crop |
| C. | kor |
| Answer» C. kor | |
| 39. |
A graph showing variations of discharge with time, at a particular point of a stream is known as |
| A. | mass inflow curve |
| B. | logistic curve |
| C. | hydrograph |
| D. | none of these |
| Answer» D. none of these | |
| 40. |
A canal outlet should |
| A. | be so designed that the farmer cannot temper with its functioning |
| B. | be simple so that it can be constructed or fabricated by local masons |
| C. | draw its fare share of silt carried by the distributing channel |
| D. | all of the above |
| Answer» E. | |
| 41. |
The average duty for sugar-cane in hectares/cumec is |
| A. | 200 |
| B. | 400 |
| C. | 600 |
| D. | 800 |
| Answer» E. | |
| 42. |
A side slope canal, cross-drainage works are completely eliminated. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 43. |
The hydrology helps in |
| A. | predicting maximum discharge |
| B. | deciding capacity of reservoir |
| C. | fore casting flood |
| D. | all of these |
| Answer» E. | |
| 44. |
Available moisture may be defined as the |
| A. | moisture content at permanent wilting point |
| B. | difference in water content of the soil between field capacity and permanent wilting |
| C. | maximum moisture holding capacity |
| D. | all of these |
| Answer» C. maximum moisture holding capacity | |
| 45. |
The method used for training of rivers is |
| A. | guide bank |
| B. | dyke or levee |
| C. | groyne |
| D. | all of these |
| Answer» E. | |
| 46. |
The moisture content of the soil, after free drainage has removed most of the gravity water, is known as |
| A. | field capacity |
| B. | saturation capacity |
| C. | wilting co-efficient |
| D. | available moisture |
| Answer» B. saturation capacity | |
| 47. |
The process of loosing water from the leaves of plants, is termed as |
| A. | surface evaporation |
| B. | water surface evaporation |
| C. | transpiration |
| D. | precipitation |
| Answer» D. precipitation | |
| 48. |
The fall of moisture from the atmosphere to the earth surface in any form, is called |
| A. | evaporation |
| B. | transpiration |
| C. | precipitation |
| D. | none of these |
| Answer» D. none of these | |
| 49. |
When river flows in a plain country, its stage is known as |
| A. | delta |
| B. | boulder |
| C. | trough |
| D. | rocky |
| Answer» D. rocky | |
| 50. |
The setting for a sub-proportional outlet is |
| A. | more |
| B. | less |
| C. | same |
| Answer» C. same | |