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 water utilized by plants is available in soils mainly in the form of a) capillary water b) gravity water c) hygroscopic water d) pore water 2 / 50 2. 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 3 / 50 3. *Groynes are generally provided a) attractive b) deflective c) repelling d) all of the above 4 / 50 4. 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 5 / 50 5. The most desirable alignment of an irrigation canal is along a) a contour line b) the ridge line c) the valley line d) none of the above 6 / 50 6. *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 7 / 50 7. 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 8 / 50 8. 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 9 / 50 9. 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 10 / 50 10. The floor of an aqueduct is subjected to uplift pressure due to a) seepage of water from the canal to the drainage b) subsoil water table in the drainage bed c) both (a) and (b) above d) none of the above 11 / 50 11. Pitot tube is used to measure a) area b) velocity c) discharge d) none of the above 12 / 50 12. 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 13 / 50 13. *Available moisture may be defined as the a) moisture content at permanent wilting point b) difference in water content of the soil between field capacity and permanent wilting point c) maximum moisture-holding capacity d) all of the above 14 / 50 14. An excavation in the base of a dam or other structures filled with relatively impervious material to reduce percolation is called a) cut-off trench b) key trench c) both (a) and (b) of above d) none of the above 15 / 50 15. 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 16 / 50 16. *When the water table is within the root zone depth and is detrimental to plant life, the land is said to be a) over nourished b) super-saturated c) waterlogged d) undernourished 17 / 50 17. According to Lacey's theory, the depth of scour in the case of a right-angle bend is a) 1.414D b) 1.667D c) 2D d) 2.5D 18 / 50 18. 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 19 / 50 19. *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 20 / 50 20. *Attracting type spurs a) pointing up stream b) pointing down stream c) parallel to bank d) perpendicular to bank 21 / 50 21. *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 22 / 50 22. 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 23 / 50 23. A hydraulic structure is designed to withstand a) seepage b) hydraulic jump c) hydraulic pressure d) all of the above 24 / 50 24. A canal, constructed by the side of and generally parallel to the parent canal with a different bed slope is called a) parallel canal b) ditch canal c) drain canal d) side canal 25 / 50 25. *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 26 / 50 26. Salt present in water, harmful for cultivation purposes, is a) sodium carbonate b) potassium sulfate c) calcium sulfate d) none of the above 27 / 50 27. *Silt-carrying capacity of water in a canal depends on a) silt charge b) discharge c) surface slope d) all of the above 28 / 50 28. The amount of evaporation loss is a) 1 to 2 percent of the water entering the canal b) 2 to 5 percent of the water entering the canal c) 5 to 10 percent of the water entering the canal d) 50 to 20 percent of the water entering the canal 29 / 50 29. *The hydraulic jump is known as a) standing wave b) positive surge c) negative wave d) none of the above 30 / 50 30. 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 31 / 50 31. *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 32 / 50 32. In waterlogged lands a) the soil pores are within a depth of 1 meter b) the soil pores are saturated up to the root zone of the crop c) the soil pores are saturated up to the depth of 40cm d) the soil pores are saturated up to the top 33 / 50 33. 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 34 / 50 34. The time (generally in days) for which a crop occupies a field to attain its maturity is known as a) duty b) base period c) delta d) yield period 35 / 50 35. A canal, designed to irrigate throughout the year, is a) permanent canal b) perennial canal c) continuous canal d) green canal 36 / 50 36. *Rugosity coefficient for a silt clay a) 0.0225 b) 0.025 c) 0.0275 d) 0.03 37 / 50 37. If the value of sodium-absorption ratio lies between 10 to 18, it is called a) low sodium water b) medium sodium water c) high sodium water d) very high sodium water 38 / 50 38. *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 39 / 50 39. 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 40 / 50 40. *Irrigation distributor canals are generally aligned along a) contour lines b) valley lines c) ridge lines d) straight lines 41 / 50 41. 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 42 / 50 42. 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 43 / 50 43. *According to Manning's formula, the velocity is inversely proportional to a) rugosity coefficient b) HMD c) gradient d) all of the above 44 / 50 44. 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 45 / 50 45. 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 46 / 50 46. Darcy's formula is given by a) the rate of flow is proportional to the hydraulic gradient b) the rate of flow is proportional to the exit gradient c) the rate of discharge is proportional to the hydraulic gradient d) the rate of discharge is proportional to the exit gradient 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 group of canals which avoid cross drainage work a) watershed and contour b) contour and side slope c) side slope and water shed d) none of the above 49 / 50 49. *Surface float method is used to measure a) area b) velocity c) discharge d) none of the above 50 / 50 50. *The main function of the diversion headworks of a canal from a river is a) to remove silt b) to control floods c) to store water d) to raise water level 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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