Home» Online Test » Civil Engineering » Irrigation Engineering Online Test » Paper 1 » Paper 2 » Paper 3 0% Sorry, time's up. To complete the online test, please restart it. Created by Vikash chaudhary This is a FREE online test. Beware of scammers who ask for money to attend this test. Get New Questions in Each Attempt Total Questions: 50 Time Allotted: 50 minutes Passing Score: 70% Randomization: Yes Certificate: Yes Do not refresh the page! 👍 All the best! 1 / 50 1. On a suitable foundation, the earthen dam can be constructed up to a height of a) 50 m b) 100 m c) 150 m d) 200 m 2 / 50 2. As compared to the crest of the normal portion of the weir, the crest of the undersluice portion of the weir is kept at a) higher level b) same level c) lower level d) all of the above 3 / 50 3. *The maximum discharge through a circular channel takes place when the depth of flow is equal to a) 0.95 times the diameter b) 0.8 times the diameter c) 0.6 times the diameter d) 0.5 times the diameter 4 / 50 4. *The hydraulic jump is the example of a) gradually varied flow b) rapidly varied flow c) spatially varied flow d) none of the above 5 / 50 5. A low gravity dam is the one in which a) the height of the water stored is less than 30 m b) the resultant just passes through the downstream middle third point c) the maximum principal stress is less than the allowable crushing strength and the upstream face is vertical d) the height of the dam is less than 5 times the top width 6 / 50 6. *Due to topography, if the space is not available, the most suitable spillway is a) ogee spillway b) chute spillway c) shaft spillway d) straight drop spillway 7 / 50 7. Guide banks for training a river at the site of a bridge or weir are called a) safe bunds b) guide bunds c) side bunds d) bell bunds 8 / 50 8. *A silt regulator located at the head of a channel is called a) silt ejector b) silt excluder c) silt sweeper d) silt washer 9 / 50 9. A protection at the downstream end of a weir or fall, consisting of blocks of concrete or masonry, is called a) scour b) baffles c) talus d) flank wall 10 / 50 10. Top of the weir is, a) ridgecrest b) crest c) head d) peak 11 / 50 11. The mean velocity, for a channel of given depth, which will just keep the channel free from silting or scouring its bed throughout the year, is called a) optimum velocity b) ideal velocity c) critical velocity d) all of the above 12 / 50 12. The fall is designed and constructed to satisfy the condition that a) the velocity of approach should be minimum b) it should be able to admit variations of water levels in the canal c) bed, bank, and downstream position should be safe against erosion due to the excess energy of flow d) all of the above 13 / 50 13. For economical design of a gravity dam, the shear friction factor should be a) 0.65 b) 1 c) between 1 and 2 d) none of the above 14 / 50 14. River resulting from a deficit of sediments in flowing water is a) degrading type b) aggrading type c) meandering type d) none of the above 15 / 50 15. In a non-gravity weir, the uplift pressure is resisted by a) weight of floor b) bending action of reinforced concrete floor c) punching action of the floor d) none of the above 16 / 50 16. Optimum depth of kor watering for a rice crop is a) 13.5 cm b) 16.5 cm c) 19 cm d) 21 cm 17 / 50 17. *Depth of canal cross-section such that the quantity of excavation is equal to the earthwork required for banks is known as a) balancing depth b) canal depth c) water depth d) none of the above 18 / 50 18. *When the canal runs below the drain, the cross drainage work provided is called a) aqueduct b) super passage c) level crossing d) syphon 19 / 50 19. The types of irrigation applicable if there is a scarcity of water with high pressure a) drip irrigation b) trickle irrigation c) both (a) and (b) above d) sprinkler irrigation 20 / 50 20. A hydraulic structure is designed to withstand a) seepage b) hydraulic jump c) hydraulic pressure d) all of the above 21 / 50 21. *In irrigation canals, the reasons for water losses are a) absorption b) evaporation c) percolation d) all of the above 22 / 50 22. *A divide wall is provided to a) control the silt entering the canal b) separate the under sluices from the weir proper c) prevent river flood entering the canal d) all of the above 23 / 50 23. The capacity of a reservoir is 50 million cubic meters, and dead storage is 12 million cubic meters. If the average volume of sediment deposition is 0.1 million cubic meters per year, then the usefulness of the reservoir will start reducing after a) 40 years b) 100 years c) 120 years d) 250 years 24 / 50 24. *The width and length of meander vary approximately with a) discharge b) square root of discharge c) cube root of discharge d) square of discharge 25 / 50 25. In a gravity canal, F.S.L is always a) at the ground level b) below the ground level c) a few cm above the ground level d) 4 to 5 meters above the ground level 26 / 50 26. Into how many components is the diversion head work divided? a) 8 b) 6 c) 7 d) 5 27 / 50 27. The average delta of a rice crop is nearly a) 30 cm b) 60 cm c) 120 cm d) 150 cm 28 / 50 28. Tortuosity of a meandering river is the ratio of a) meander length and meander belt b) curved length along the channel to the direct axial length of the river reach c) direct axial length of the river reach to the curved length of the channel d) meander belt to meander length 29 / 50 29. In an ion exchange process when ions are transported from water to solid, ion-exchange media is fixed or fluidized bed, the process is termed as a) flocculation b) demineralization c) ion-exchange d) deionization 30 / 50 30. A multipurpose reservoir is a) planned and constructed to serve various purposes b) designed for one purpose but serves more purposes c) both (a) and (b) d) none of the above 31 / 50 31. Bed bars provided in a canal are made of a) cement concrete b) brick masonry c) iron rod d) both (a) and (b) above 32 / 50 32. According to Kennedy's theory, the silt supporting eddies are generated due to a) roughness of the bed b) roughness of the sides c) both (a) and (b) above d) none of the above 33 / 50 33. The retaining wall in continuation of abutment both upstream and downstream is called a) flank wall b) wing wall c) flarred wall d) both (a) and (b) of above 34 / 50 34. Critical flow is a) in which the total energy head is minimum for a given discharge b) in which the Froude number is less than unity c) in which the Froude number is more than unity d) none of the above 35 / 50 35. A fall in a canal bed is generally provided if a) the ground slope exceeds the designed bed slope b) the designed bed slope exceeds the ground slope c) the ground slope is practically the same as the designed bed slope d) none of the above 36 / 50 36. Find the delta for a crop if the base period and duty are 110 days and 1400 he/cumec respectively. a) 38 cm b) 48 cm c) 58 cm d) 68 cm 37 / 50 37. *The structure provided where natural drainage and canal meet at the same level is a) aqueduct b) siphon c) super passage d) level crossing 38 / 50 38. Darcy's formula is given by a) the rate of flow is proportional to the hydraulic gradient b) the rate of flow is proportional to the exit gradient c) the rate of discharge is proportional to the hydraulic gradient d) the rate of discharge is proportional to the exit gradient 39 / 50 39. On rolling land, the method of applying water is a) check flooding b) free flooding c) border flooding d) furrow flooding 40 / 50 40. The sudden and turbulent passage of water from a low level critical depth to high level above critical depth, during which the velocity passes from supercritical to subcritical, is known as a) jump b) hydraulic jump c) sudden fall d) all of the above 41 / 50 41. *Weed growth in a canal leads to a) an increase in discharge b) a decrease in silting c) a decrease in discharge d) an increase in the velocity of flow 42 / 50 42. For an earthen dam, least suited spillway is: a) ogee spillway b) chute spillway c) shaft spillway d) none of the above 43 / 50 43. An artesian aquifer is one where a) water surface under the ground is at atmospheric pressure b) water is under pressure between two impervious strata c) water table serves as the upper surface of the zone of saturation d) none of the above 44 / 50 44. Roughness of the bed and sides of a channel can be reduced by a) removing sandbars b) removing fallen trees and other snags c) preventing cropping on the river bed near banks d) all of the above 45 / 50 45. *The maximum velocity in a circular channel of diameter D occurs when the depth of flow is a) 3.50 D b) 0.73 D c) 0.81 D d) 0.90 D 46 / 50 46. The most suitable section of a lined canal is a) triangular section with a circular bottom for small canals b) trapezoidal section with rounded corners for large canals c) both (a) and (b) above d) none of the above 47 / 50 47. *Surface float method is used for the velocity measurement while the current meter is used for the measurement of a) discharge b) velocity c) depth d) amount of silt 48 / 50 48. *Lining of an irrigation channel a) increases the waterlogging area b) decreases the waterlogging area c) does not change the waterlogging area d) none of the above 49 / 50 49. The volume of water stored between normal pool level and the maximum pool level is known as a) bank storage b) surcharge storage c) useful storage d) deep storage 50 / 50 50. A sudden fall of the level of the ground along the alignment of the canal joined by an inclined bed is called a a) jump b) sudden fall c) rapid fall d) hydraulic jump Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Irrigation Engineering MCQ PDF for Offline Study Share the above MCQs: Click to share on Facebook (Opens in new window) Facebook Click to share on WhatsApp (Opens in new window) WhatsApp Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Reddit (Opens in new window) Reddit
