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. The method of irrigation, in which land surrounded by natural or artificial banks is flooded, is known as a) broad irrigation b) natural irrigation c) basin irrigation d) none of the above 2 / 50 2. 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 3 / 50 3. *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 4 / 50 4. *Site of the head works is good when a) it is situated on a river bend b) it is close to the irrigated area c) good foundation is available for the structure d) both B and C above 5 / 50 5. *If the irrigation canal and drain are at the same level, the cross drainage work is achieved by providing a) a level crossing b) an inlet and outlet c) siphon aqueduct d) both (a) and (b) above 6 / 50 6. For an earthen dam, least suited spillway is: a) ogee spillway b) chute spillway c) shaft spillway d) none of the above 7 / 50 7. The upstream face of an earthen dam is a) a flow line b) a phreatic line c) a cubic parabola d) none of the above 8 / 50 8. *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 9 / 50 9. Optimum depth of kor watering for a rice crop is a) 13.5 cm b) 16.5 cm c) 19 cm d) 21 cm 10 / 50 10. The type of fall suitable for any discharge is a) vertical type b) straight glacis fall with baffle wall c) straight glacis fall without a baffle wall d) all of the above 11 / 50 11. A counterbalance is a) a horizontal benching provided on the outer slope b) a vertical benching provided on the outer edge of the bank c) a horizontal benching provided on the inside slope d) a vertical benching provided on the inner edge of the bank 12 / 50 12. *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 13 / 50 13. 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 14 / 50 14. A river bend in alluvial soil is characterized by a) silting on the convex side b) scouring on the concave side c) both (a) and (b) of above d) silting on the concave side and scouring on the convex side 15 / 50 15. *A device provided near weirs or dams to facilitate the migration of fish upstream or downstream around the weirs is called a) fish net b) fish ladder c) fish channel d) fish pond 16 / 50 16. When the base period of the crop is 100 days, the delta for the crop will be if the duty of the crop is 432 he/cumec. a) 432 cm b) 200 cm c) 864 cm d) 100 cm 17 / 50 17. An aggrading river is a) scouring river b) silting river c) both (a) and (b) of above d) none of the above 18 / 50 18. *Surface float method is used to measure a) area b) velocity c) discharge d) none of the above 19 / 50 19. 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 20 / 50 20. 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 21 / 50 21. In an earthen dam, seepage through the foundation is controlled by providing a) impervious cut off b) none of the above c) chimney drain d) horizontal blanket 22 / 50 22. *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 23 / 50 23. 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 24 / 50 24. The type of irrigation during a low quantity of water a) sprinkler irrigation b) drip irrigation c) free flooding d) furrow method 25 / 50 25. Waterlogging may result from a) over-irrigation b) inadequate drainage c) seepage from adjoining reservoirs, etc. d) all of the above 26 / 50 26. Tail race a) is a channel conducting water away from a water wheel b) has a gradient steeper than that of the canal c) is the channel between the silt extractor and the river through which the escape water is discharged d) all of the above 27 / 50 27. *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 28 / 50 28. The canal head regulator is provided at the head of the offtaking canal to a) regulate the supply of water in the canal b) control the entry of silt into the canal c) prevent the river floods entering into the canal d) all of the above 29 / 50 29. 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 30 / 50 30. In a chute spillway, the flow is generally: a) laminar b) turbulent c) critical d) supercritical 31 / 50 31. *Pick up the correct sequence of the parts of a canal system a) head works - distributary - branch canal - minor b) head works - main canal - branch canal - minor - distributary c) head works - main canal - branch canal - distributary - minor d) head works - branch canal - main canal - distributary 32 / 50 32. 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 33 / 50 33. 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 34 / 50 34. 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 35 / 50 35. For irrigation purposes, the pH value of water should be a) between 3 and 6 b) between 6 and 8.5 c) between 8.5 and 11 d) more than 11 36 / 50 36. The supply passing down the parent channel is controlled by a) head regulator b) cross regulator c) distributary head regulator d) all of the above 37 / 50 37. 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 38 / 50 38. 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 39 / 50 39. 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 40 / 50 40. According to Khosla's theory, the undermining of the floor starts from the a) tail end b) starting end c) intermediate point d) foundation bed 41 / 50 41. *The operation, which washes out salts from the upper zone of the soil, is called a) reclamation b) leaching c) efflorescence d) salinity 42 / 50 42. 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 43 / 50 43. 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 44 / 50 44. Silt is a a) fertilizing agent b) non-fertilizing agent c) type of crop d) type of rock 45 / 50 45. *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 46 / 50 46. *In a syphon aqueduct, the maximum uplift pressure on the floor occurs when a) the canal is full b) the canal is full and drainage is dry c) the canal is empty and the water table in the stream rises to the canal bed d) both canal and drainage are full 47 / 50 47. *The discharge through a channel is maximum when a) d = b/3 b) m = d/2 c) d = b d) b = 1.5d 48 / 50 48. A fall, which maintains its depth, is a) a low weir fall b) a trapezoidal notch fall c) a rectangular notch fall d) all of the above 49 / 50 49. *The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal is called a) a syphon b) aqueduct c) syphon aqueduct d) super passage 50 / 50 50. The fall, which can be used as a meter fall, is a) vertical drop fall b) flumed glacis fall c) unflumed glacis fall 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! 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
