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. 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 2 / 50 2. *Attracting type spurs a) pointing up stream b) pointing down stream c) parallel to bank d) perpendicular to bank 3 / 50 3. Canals taking off from a river with or without a head regulator are called a) feeder canal b) inundation canal c) ditch canal d) contour canal 4 / 50 4. A canal, designed to irrigate throughout the year, is a) permanent canal b) perennial canal c) continuous canal d) green canal 5 / 50 5. *The elementary profile of a dam is a) a trapezoidal b) a right-angled triangle c) rectangular d) none of the above 6 / 50 6. Optimum depth of kor watering for wheat in the plains or terai is a) 13.5 cm b) 16.5 cm c) 19 cm d) 21 cm 7 / 50 7. The fall using a parabolic glacis for energy dissipation is a) vertical drop fall b) glacis fall c) inglis fall d) montague fall 8 / 50 8. As the coefficient of friction increases, the velocity of water in a canal a) increases b) decreases c) remains constant d) none of the above 9 / 50 9. *Borrow pits are preferably located in the field a) on both sides of the canal b) in the central half section of the canal c) on the left side of the canal d) on the right side of the canal 10 / 50 10. *Meandering of rivers is caused by a) excessive discharge during the floods, when turbulence is developed b) increase in width c) heavy deposition d) all of the above 11 / 50 11. If the demand line drawn from a ridge in a flow-mass curve does not intersect the curve again, it shows a) demand cannot be met by inflow b) reservoir was not full at the beginning c) both (a) and (b) d) none of the above 12 / 50 12. 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 13 / 50 13. The ratio of the total volume of water delivered to a crop to the area on which it has been spread is called a) duty b) delta c) critical depth d) none of the above 14 / 50 14. *Marginal bund/leeve is an earthen dam constructed roughly a) parallel to the river b) perpendicular to the river c) acute angle with the river d) obtuse angle with the river 15 / 50 15. *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 16 / 50 16. The disadvantage of water logging of fields is a) plant diseases b) growth of water weeds c) rise of salt in the surface layer d) all of the above 17 / 50 17. The discharge coefficient of an ogee spillway is: a) 1.2 b) 1.8 c) 2.02 d) 3.7 18 / 50 18. Waterlogging may result from a) over-irrigation b) inadequate drainage c) seepage from adjoining reservoirs, etc. d) all of the above 19 / 50 19. *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 20 / 50 20. 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 21 / 50 21. *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 22 / 50 22. *The maximum amount of water required in the case of paddy is at the time of a) puddling b) seeding c) harvesting d) flowering 23 / 50 23. *The operation, which washes out salts from the upper zone of the soil, is called a) reclamation b) leaching c) efflorescence d) salinity 24 / 50 24. A wall built along the bank of a river, parallel to the direction of flow for directing fast flow from a sluice or spillway, to prevent eroding banks of a river or canal, is called a) toe wall b) training wall c) wing wall d) divide wall 25 / 50 25. The most suitable location of a canal headwork is a) boulders stage of the river b) delta stage of the river c) rock stage of the river d) trough stage of the river 26 / 50 26. 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 27 / 50 27. *Which is the best hydraulic section of the following open channel cross-section? a) Rectangle b) Triangle c) Trapezoidal d) Semicircle 28 / 50 28. Area velocity method is used to measure. a) area b) velocity c) discharge d) none of the above 29 / 50 29. *The most efficient section of a channel is a) triangular b) rectangular c) square d) trapezoidal 30 / 50 30. *In a barrage, the crest level is kept a) low with large gates b) high with large gates c) high with small gates d) low with small gates 31 / 50 31. An aggrading river is a) scouring river b) silting river c) both (a) and (b) of above d) none of the above 32 / 50 32. 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 33 / 50 33. For any crop, the base period is measured in a) days b) weeks c) months d) years 34 / 50 34. A straight or curved retaining wall with its profile gradually changing from one slope to another is called a) curtain wall b) back wall c) flarred wall d) parapet wall 35 / 50 35. 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 36 / 50 36. A repelling groyne is aligned a) parallel to bank b) perpendicular to bank c) pointing up stream d) pointing down stream 37 / 50 37. Silt excluders are constructed on the a) river bed down stream of the head regulator b) river bed up stream of the head regulator c) canal bed up stream of the head regulator d) canal bed down stream of the head regulator 38 / 50 38. According to Lacey's theory, the silt supporting eddies are generated from a) the bottom of the channel b) the side of the channel c) both (a) and (b) above d) none of the above 39 / 50 39. A groyne with a curved head is known as a) Burma groyne b) Dehny groyne c) Hockey groyne d) Meandering groyne 40 / 50 40. Retrogression of the bed level of a river downstream a weir or barrage occurs due to a) heavy impact of water b) less percentage of silt c) increase of the bed level d) soft soil strata 41 / 50 41. *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 42 / 50 42. As compared to a gravity dam, earthen dams a) require a sound rock foundation b) require less skilled labour c) require skilled labour d) require more cost 43 / 50 43. 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 44 / 50 44. Aggrading river is characterized by a) losing its bed b) building up its beds c) meandering d) low discharge, low gradient 45 / 50 45. *The river training work is concentrated with a) discharge of water b) depth of water c) amount of sediment d) all of the above 46 / 50 46. Which of the following is a leguminous crop? a) rice b) potato c) groundnut d) hemp 47 / 50 47. *The discharge through a trapezoidal channel is maximum when a) half of the top width = sloping side b) top width = half of sloping side c) top width = sloping side d) top width = 1.5x sloping side 48 / 50 48. *The discharge through a channel is maximum when a) d = b/3 b) m = d/2 c) d = b d) b = 1.5d 49 / 50 49. *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 50 / 50 50. *Diversion headwork is constructed to a) lower water level in the river b) regulate the intake of water into the canal c) regulate silt entry into the canal 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. 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