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 fresh, 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. A hydraulic structure is designed to withstand a) seepage b) hydraulic jump c) hydraulic pressure d) all of the above 2 / 50 2. A minimum of 90 cm freeboard is provided if the discharge in the canal is a) between 10 and 30 cumecs b) between 30 and 60 cumecs c) over 60 cumecs d) over 100 cumecs 3 / 50 3. Canals taken off from ice-fed perennial rivers are known as a) permanent canal b) perennial canal c) continuous canal d) green canal 4 / 50 4. In irrigation canals, drops are needed if a) the width of the canal is less than its depth b) the velocity of flow is less than the critical one c) the natural slope is very steep d) the natural slope is very smooth 5 / 50 5. As per Lacey's theory, the silt factor is a) directly proportional to average particle size b) directly proportional to the square root of the average particle size c) inversely proportional to average particle size d) not related to the average particle size 6 / 50 6. *Which of the following is not a cross drainage work? a) aqueduct b) super passage c) level crossing d) drain crossing 7 / 50 7. *A groyne a) widens a river channel to improve its depth b) deteriorates the river banks c) silts up the area in the vicinity by creating a slack flow d) none of the above 8 / 50 8. *The river training work is concentrated with a) discharge of water b) depth of water c) amount of sediment d) all of the above 9 / 50 9. According to Lacey's regime theory, a channel is said to be in its regime when it satisfies the condition a) discharge is constant b) silt grade and silt charge are constant c) the channel is flowing in incoherent unlimited alluvial soil of the same nature as that transported d) all of the above 10 / 50 10. For the maximum velocity occurring in a canal, the hydraulic mean depth is a) minimum b) maximum c) medium d) none of the above 11 / 50 11. Hydrodynamic pressure due to an earthquake acts at a height of a) 3H / 4π above the base b) 4H / 3π above the base c) 4H / 3π below the water surface d) 3H / 4π below the water surface 12 / 50 12. Boron concentration in water for irrigation should be limited to a) 2 ppm b) 20 ppm c) 200 ppm d) 500 ppm 13 / 50 13. Intensity of irrigation is a) is the percentage of culturable commanded area proposed to be irrigated annually b) is always more than 100% c) is the percentage that could be ideally irrigated d) all of the above 14 / 50 14. A rectangular channel is said to be wide if a) width is five times the depth of flow b) width is five times the depth of flow c) width is more than ten times the depth of the flow d) none of the above 15 / 50 15. The fall using a parabolic glacis for energy dissipation is a) vertical drop fall b) glacis fall c) inglis fall d) montague fall 16 / 50 16. 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 17 / 50 17. The shape of the lined canal recommended by ISI is a) triangular b) rectangular c) parabolic d) trapezoidal 18 / 50 18. The number of dams in Bandhra irrigation may be a) equal to b) between 1 and 3 c) greater than 2 d) any of the above 19 / 50 19. Percolation loss is less in the case of a) sandy soil b) black cotton soil c) silty soil d) all of the above 20 / 50 20. 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 21 / 50 21. *Bell bunds are a) guide bands for training a river at the site of a bridge or weir b) barriers made of timber, filled with stone or other suitable material c) fixed distances over which surface floats are lined d) none of the above 22 / 50 22. 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 23 / 50 23. 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 24 / 50 24. *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 25 / 50 25. The flow-mass curve is a graphical representation of a) cumulative discharge and time b) cumulative discharge volume and time in chronological order c) discharge and time d) none of the above 26 / 50 26. If the top width is provided for the roadway, the resultant force for full reservoir condition will a) shift towards the heel b) shift towards the toe c) remain stationary d) none of the above 27 / 50 27. *Main purpose of mean water training for rivers is a) flood control b) to keep the channel in good shape by sufficient disposal of suspended and bed load c) to provide sufficient depth of water in navigable channels during low water position d) all of the above 28 / 50 28. *A river training work is generally required when the river is a) aggrading type b) degrading type c) meandering type d) stable type 29 / 50 29. In rice, the depth of the root zone is generally, a) 30 cm b) 60 cm c) 90 cm d) 120 cm 30 / 50 30. A weir, which has a tail water level higher than the weir crest, by which the discharge is affected, is called a) negative head weir b) submerged weir c) flooded weir d) none of the above 31 / 50 31. *The process by which unculturable soil made culturable is known as a) reclamation b) leaching c) efflorescence d) salinity 32 / 50 32. If the RLs of canal bed level and high flood level of drainage are 210.0 m and 212.0 m respectively, then the cross drainage work will be a) aqueduct b) super passage c) syphon aqueduct d) none of the above 33 / 50 33. The method for training of rivers is a) groynes b) guide bank c) pitched banks d) all of the above 34 / 50 34. *Lime concrete lining is used a) when the velocity of flow is below 2 m/sec b) in irrigation channels with capacities up to 200 cumecs c) where economy is required d) all of the above 35 / 50 35. The effective precipitation for a crop is the water which is equal to a) water stored in the soil within the root zone of the crop b) total precipitation during the crop period c) total precipitation minus the loss due to infiltration d) none of the above 36 / 50 36. *In a concrete-lined canal, the permissible velocity of water is a) 1 m/sec b) 2 m/sec c) 3 m/sec d) 4 m/sec 37 / 50 37. The proportion of silt, water, and the size of silt particles carried depend upon a) slope b) nature of the surface soil c) rainfall in the catchment area d) all of the above 38 / 50 38. The types of reservoirs in which water control devices are not provided are known as: a) retarding reservoir b) detention reservoir c) both (a) and (b) d) none of the above 39 / 50 39. A crop that takes more than 4 months to mature is called a) solid crop b) long crop c) hard crop d) cash crop 40 / 50 40. 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 41 / 50 41. 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 42 / 50 42. Waterlogging of fields can be reduced by a) providing canal lining b) providing intercepting drains c) controlling intensity of irrigation d) all of the above 43 / 50 43. A cross regulator is provided on the main canal at the a) downstream of the offtake b) upstream of the offtake c) both (a) and (b) of the above d) none of the above 44 / 50 44. The duty is largest a) at the head of the main canal b) at the head of the watercourse c) on the field d) same at all places 45 / 50 45. Horizontal acceleration due to an earthquake results in a) hydrodynamic pressure b) inertia force into the body of the dam c) both (a) and (b) of above d) none of the above 46 / 50 46. Necessity of cross-drainage works arises when a) canal is aligned on the watershed across a number of drainages b) canals are aligned away from the watershed because the area of the watershed is less suitable than other areas c) a number of canal systems have to be linked d) all of the above 47 / 50 47. The kharif crop is sown a) at the end of summer b) at the end of the north-east monsoon c) at the beginning of the south-west monsoon d) in mid-summer 48 / 50 48. The methods used for drilling a tube well in compacted rock materials is a) wash boring b) percussion method c) hydraulic rotary d) all of the above 49 / 50 49. 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 50 / 50 50. The fall, with the crest usually at or near the bed level, without a glacis, is called a) rapid fall b) notch fall c) natural fall d) regulated fall 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
