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. The velocity at which eddies in the flow die out is called a) critical velocity b) lower critical velocity c) higher critical velocity d) none of the above 2 / 50 2. The aqueduct or super passage type of cross drainage headworks are used when a) high flood drainage discharge is small b) high flood drainage discharge is large and short-lived c) high flood drainage discharge is large and continues for a long time d) none of the above 3 / 50 3. Waterlogging may result from a) over-irrigation b) inadequate drainage c) seepage from adjoining reservoirs, etc. d) all of the above 4 / 50 4. Vertical drop fall is satisfactory for a drop up to a) 0.5 m b) 1.0 m c) 1.5 m d) 2.0 m 5 / 50 5. *Drop structures in the canal are provided for a) providing a bridge b) energy dissipation c) maintaining ground slope d) creating high velocity 6 / 50 6. According to Khosla's theory, the exit gradient in the absence of a downstream cutoff is a) zero b) unity c) infinity d) none of the above 7 / 50 7. Sediment deposit in a reservoir can be reduced by a) providing vegetal cover in the catchment area b) avoiding reservoir sites that are prolific sources of sediment c) adopting soil conservation measures in the catchment area d) all of the above 8 / 50 8. Aggrading river is characterized by a) losing its bed b) building up its beds c) meandering d) low discharge, low gradient 9 / 50 9. According to Khosla's theory, the exit gradient a) depends on d/b ratio b) depends on b/d ratio c) cannot exceed unity d) can be zero 10 / 50 10. The most suitable material for the central impervious core of a zoned embankment type dam is a) coarse sand b) compacted soil c) clay d) clay mixed with fine sand 11 / 50 11. 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 12 / 50 12. The irrigation with sewage from a town, instead of natural water, is called a) effluent irrigation b) fertility irrigation c) oxidation irrigation d) none of the above 13 / 50 13. The useful storage is the volume of water stored in the reservoir between: a) minimum pool level and maximum pool level b) minimum pool level and normal pool level c) normal pool level and maximum pool level d) none of the above 14 / 50 14. The other name for an unconfined aquifer is a) temporary aquifer b) permanent aquifer c) free aquifer d) perched aquifer 15 / 50 15. In a gravity dam, tailwater causes a) decrease in principal stress b) decrease in shear stress c) increase in both principal and shear stress d) both (a) and (b) of above 16 / 50 16. Canals taken off from ice-fed perennial rivers are known as a) permanent canal b) perennial canal c) continuous canal d) green canal 17 / 50 17. *Separation of flow occurs when a) the pressure intensity reaches a minimum b) the cross-section of a channel is reduced c) the boundary layer comes to rest d) the head is maximum 18 / 50 18. SHAFT spillway is the same as a) conduit spillway b) tunnel spillway c) morning glory spillway d) trough spillway 19 / 50 19. *A silt regulator located at the head of a channel is called a) silt ejector b) silt excluder c) silt sweeper d) silt washer 20 / 50 20. 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 21 / 50 21. The water-bearing stratum that creates a groundwater reservoir and feeds wells and springs is called a) underground spillway b) aquifer c) equalize d) none of the above 22 / 50 22. The fall using a parabolic glacis for energy dissipation is a) vertical drop fall b) glacis fall c) inglis fall d) montague fall 23 / 50 23. *The elementary profile of a dam is a) a trapezoidal b) a right-angled triangle c) rectangular d) none of the above 24 / 50 24. Water found on the surface of the soil, which is not capable of movement either by gravity or capillary and can only be driven off by heat, is called a) water vapour b) moisture c) hygroscopic water d) none of the above 25 / 50 25. *The hydraulic jump is the example of a) gradually varied flow b) rapidly varied flow c) spatially varied flow d) none of the above 26 / 50 26. For standing crops in undulating sandy fields, the best method of irrigation is a) free flooding b) check flooding c) sprinkler irrigation d) furrow method 27 / 50 27. 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 28 / 50 28. Longitudinal shallow retaining walls built near ground level for supporting the pitching on the face of earthen embankment is called a) base wall b) toe wall c) wing wall d) bottom wall 29 / 50 29. *The major resisting force in a gravity dam is a) uplift pressure b) water pressure c) self-weight d) wave pressure 30 / 50 30. *Attracting type spurs a) pointing up stream b) pointing down stream c) parallel to bank d) perpendicular to bank 31 / 50 31. Find the culturable command area from the following data. GCA = 400 Ha, wheat = 200 Ha, maize = 50 Ha, paddy = 100 Ha, barren land = 50 Ha a) 200 Ha b) 150 Ha c) 50 Ha d) 350 Ha 32 / 50 32. The uplift pressure on the face of a drainage gallery in a dam is equal to a) hydrostatic pressure at toe b) hydrostatic pressure at heel c) two-thirds of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel d) none of the above 33 / 50 33. *Hydrograph is the graphical representation of a) river runoff and time b) surface runoff and time c) groundwater and time d) rainfall and time 34 / 50 34. *Single bank canal is the other name for a) ridge canal b) contour canal c) side slope canal d) none 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. *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 37 / 50 37. *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 38 / 50 38. Disposal of extra excavated earth of canals is utilized to provide a spoil bank on a) the left side b) the right side c) none of the above d) all of the above 39 / 50 39. A canal, designed to irrigate throughout the year, is a) permanent canal b) perennial canal c) continuous canal d) green canal 40 / 50 40. *Total losses in the canal are a) 40% of the total discharge b) 10% of the total discharge c) 60% of the total discharge d) equal to seepage losses 41 / 50 41. 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 42 / 50 42. Whenever an embankment has to be built on unreliable soil, provision is made for a) sand core b) percolation c) clay puddle d) all of the above 43 / 50 43. A canal normally used for the diversion of floodwaters of a river is a) feeder canal b) inundation canal c) ridge canal d) contour canal 44 / 50 44. The operation during the infiltration of water below the ground surface is a) adsorption b) absorption c) ozonization d) sedimentation 45 / 50 45. 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 46 / 50 46. 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 47 / 50 47. The factor affecting the pattern of sediment deposition in a reservoir is a) sediment size b) shape of the reservoir c) river valley slope d) all of the above 48 / 50 48. *A deep well a) is always deeper than a shallow well b) has more discharge than a shallow well c) is structurally weaker than a shallow well d) both A and B above 49 / 50 49. The primary cause of meandering is a) excess of total charge during flood b) minimum of total charge during flood c) average of total charge during flood d) none of the above 50 / 50 50. *The consumptive use of water for a crop a) is measured as the volume of water per unit area b) is measured as the depth of water on the irrigated area c) may be supplied partly by precipitation and partly by irrigation d) all of the above 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. 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