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. *Attracting type spurs a) pointing up stream b) pointing down stream c) parallel to bank d) perpendicular to bank 2 / 50 2. 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 3 / 50 3. 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 4 / 50 4. The degree of sinuosity is the ratio between a) meander length and meander width b) meander width and river bed width c) curved length and straight air length d) none of the above 5 / 50 5. *Mean velocity of the canal should never be a) less than the critical velocity b) more than the critical velocity c) equal to the critical velocity d) none of the above 6 / 50 6. 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 7 / 50 7. 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 8 / 50 8. *The structure provided where natural drainage and canal meet at the same level is a) aqueduct b) siphon c) super passage d) level crossing 9 / 50 9. 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 10 / 50 10. A contour canal a) irrigates only on one side b) is most suitable in hilly areas c) is generally aligned parallel to the contour of the area d) all of the above 11 / 50 11. The formula V=0.55 mD0.64 is given by a) Lacey b) Kennedy c) Chazy d) none of the above 12 / 50 12. *When the bed level of the canal is higher than the HFL of the drainage, then the cross drainage work is known as a) an aqueduct b) syphon aqueduct c) canal syphon d) super passage 13 / 50 13. *When a canal is carried over a natural drainage, the structure provided is known as a) siphon b) aqueduct c) super passage d) syphon aqueduct 14 / 50 14. Weirs designed and constructed on Bligh's theory failed due to a) undermining of floors b) undermining of the sub-soil c) undermining of the foundation work d) all of the above 15 / 50 15. When the reservoir is full, the maximum compressive force in a gravity dam is produced a) at the heel b) at the toe c) at the center of the base d) within the middle third of the base 16 / 50 16. 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 17 / 50 17. The maximum quantity of water that can be supplied from the reservoir with full guarantee during the worst dry period is known as a) safe yield b) design yield c) secondary yield d) average yield 18 / 50 18. With respect to inlet and outlet, which one is correct? a) When cross drainage flow is small, an inlet is constructed b) When canal flow is small, an outlet is constructed c) The number of outlets may be equal to the number of inlets d) All of the above 19 / 50 19. *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 20 / 50 20. 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 21 / 50 21. 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 22 / 50 22. The fertility of the soil is adversely affected when the pH value is more than a) 7 b) 9 c) 11 d) 14 23 / 50 23. The overflow portion of dam, over which surplus discharge flows from the reservoir to the downstream is known as: a) spillway b) dam c) groyne d) channel 24 / 50 24. 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 25 / 50 25. In a reservoir, which type of storage is normally used? a) useful storage b) surcharge storage c) bank storage d) dead storage 26 / 50 26. If the electrical conductivity of water is between 750 to 2250 micro mhos/cm at 25°C, then it is classified as a) low salinity water b) high salinity water c) medium salinity water d) none of the above 27 / 50 27. Salt present in water, harmful for cultivation purposes, is a) sodium carbonate b) potassium sulfate c) calcium sulfate d) none of the above 28 / 50 28. Which of the following is a leguminous crop? a) rice b) potato c) groundnut d) hemp 29 / 50 29. Vertical acceleration due to an earthquake results in a) an increase in the effective weight of the dam b) a decrease in the effective weight of the dam c) both (a) and (b) of above d) none of the above 30 / 50 30. Siltation of a reservoir can be reduced by a) land management b) providing sluice gates at different levels c) providing gully plugging check dams and contour bunds in the catchment area d) all of the above 31 / 50 31. The forces considered for the analysis of an elementary profile of a gravity dam under an empty reservoir condition are a) uplift pressure b) water pressure c) self-weight d) earthquake pressure 32 / 50 32. *Economic height of a dam is a) very low b) very high c) corresponds to the minimum cost of a dam per unit of storage d) none of the above 33 / 50 33. 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 34 / 50 34. *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 35 / 50 35. For syphon aqueducts, the highest flood level of the drain is a) much above the canal bed b) much below the canal trough c) at the level of the canal bed d) none of the above 36 / 50 36. For the upstream face of an earthen dam, the most adverse condition for the stability of slope is a) steady seepage b) sudden draw down c) sloughing of slope d) none of the above 37 / 50 37. 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 38 / 50 38. If there are two canals taking off from each bank of a river, then there will be a) one divide wall and one under sluice b) one divide wall and two under sluice c) two divide walls and one under sluice d) two divide walls and two under sluice 39 / 50 39. 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 40 / 50 40. 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 41 / 50 41. The main function of a distributory head regulator is a) to regulate the supply entering the distributory from the parent channel b) to control the silt entering into the distributory c) to serve as a meter for discharge measurement d) all of the above 42 / 50 42. *The discharge through a channel is maximum when a) m = d/3 b) m = b/2 c) m = d d) m = 1.5d 43 / 50 43. An impervious wall inside an earthen dam to reduce seepage is known as a) core wall b) diaphragm wall c) pug wall d) all of the above 44 / 50 44. A weir constructed to divert part or all of the water from the stream into a different course is called a) free weir b) intake weir c) submerged weir d) none of the above 45 / 50 45. 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 46 / 50 46. An aggrading river is a) scouring river b) silting river c) both (a) and (b) of above d) none of the above 47 / 50 47. In a chute spillway, the flow is generally: a) laminar b) turbulent c) critical d) supercritical 48 / 50 48. On rolling land, the method of applying water is a) check flooding b) free flooding c) border flooding d) furrow flooding 49 / 50 49. A canal used to drain off water from waterlogged areas is a) ditch canal b) drain canal c) perennial canal d) none of the above 50 / 50 50. In a syphon spillway, the effective head is measured a) as the difference in levels of water upstream and downstream of the spillway b) as the difference in levels between the headwater and the average ground level c) as the height of the crest above ground d) none of the above Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! 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