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 discharge coefficient of an ogee spillway: a) depends upon the depth of approach and upstream slope b) depends upon downstream apron and submergence c) both (a) and (b) of above d) none of the above 2 / 50 2. A sudden fall of the level of the ground along the alignment of the canal joined by an inclined bed is called a a) jump b) sudden fall c) rapid fall d) hydraulic jump 3 / 50 3. *Drain over the irrigation canal is achieved by providing a) a siphon b) super passage c) an aqueduct d) both (a) and (b) above 4 / 50 4. 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 5 / 50 5. Into how many components is the diversion head work divided? a) 8 b) 6 c) 7 d) 5 6 / 50 6. The flow of water after spilling over the spillway respectively is a) at a right angle and parallel to the weir crest b) parallel and at a right angle to the weir crest c) parallel to the weir crest in both d) none of the above 7 / 50 7. 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 8 / 50 8. The operation during the infiltration of water below the ground surface is a) adsorption b) absorption c) ozonization d) sedimentation 9 / 50 9. *A protective and training bank, constructed at the site of a bridge or weir to guide the river through the waterway provided in the structure, is called a) guide bank b) safety bank c) earth bank d) none of the above 10 / 50 10. Crop water is proportional to a) evapo-transpiration b) effective rainfall c) seepage of water d) all 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. 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 13 / 50 13. Guide banks for training a river at the site of a bridge or weir are called a) safe bunds b) guide bunds c) side bunds d) bell bunds 14 / 50 14. 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 15 / 50 15. 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 16 / 50 16. *Weir method is used to measure a) area b) velocity c) discharge d) none of the above 17 / 50 17. *The total depth of water required by a crop during the entire period the crop is in the field is known as a) Crop ratio b) Crop intensity c) Delta d) Duty 18 / 50 18. 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 19 / 50 19. 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 20 / 50 20. 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 21 / 50 21. 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 22 / 50 22. Hydrodynamic pressure due to an earthquake acts at a height of a) 3H / 4π above the base b) 4H / 3π above the base c) 4H / 3π below the water surface d) 3H / 4π below the water surface 23 / 50 23. 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 24 / 50 24. 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 25 / 50 25. 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 26 / 50 26. The fertility of the soil is adversely affected when the pH value is more than a) 7 b) 9 c) 11 d) 14 27 / 50 27. *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 28 / 50 28. 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 29 / 50 29. The name of the structure that destroys the energy is called a) stilling basin b) reservoir c) head regulator d) all of the above 30 / 50 30. *The discharge through a channel is maximum when a) m = d/3 b) m = b/2 c) m = d d) m = 1.5d 31 / 50 31. 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 32 / 50 32. *A wall built across a small channel and provided with a regulating arrangement to head up water on the upstream side is known as a) head wall b) regulating wall c) retaining wall d) none of the above 33 / 50 33. If the RLs of canal bed level and high flood level of drainage are 210.0 m and 212.0 m respectively, then the cross drainage work will be a) aqueduct b) super passage c) syphon aqueduct d) none of the above 34 / 50 34. 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 35 / 50 35. 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 36 / 50 36. *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 37 / 50 37. The average delta of a rice crop is nearly a) 30 cm b) 60 cm c) 120 cm d) 150 cm 38 / 50 38. The formula V=0.55 mD0.64 is given by a) Lacey b) Kennedy c) Chazy d) none of the above 39 / 50 39. 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 40 / 50 40. *The obstruction across the river required to raise its water level and divert the water into the canal is called a) weir or anicut b) divide wall c) guide bank d) under sluice 41 / 50 41. *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 42 / 50 42. The thickness of concrete lining, for discharge up to 200 cumecs, varies from a) 5 to 10 cm b) 10 to 15 cm c) 15 to 20 cm d) 20 to 30 cm 43 / 50 43. *The structure provided where natural drainage and canal meet at the same level is a) aqueduct b) siphon c) super passage d) level crossing 44 / 50 44. The top of the capillary zone a) lies below the water table at every point b) lies above the water table at every point c) coincides with the water table at every point d) none of the above 45 / 50 45. *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 46 / 50 46. *The crops require maximum water during a) first watering when the crop has grown a few centimeters b) first watering before sowing the crops c) last watering before harvesting d) all of the above 47 / 50 47. 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 48 / 50 48. *Which is the best hydraulic section of the following open channel cross-section? a) Rectangle b) Triangle c) Trapezoidal d) Semicircle 49 / 50 49. Salt present in water, harmful for cultivation purposes, is a) sodium carbonate b) potassium sulfate c) calcium sulfate d) none of the above 50 / 50 50. Bed bars provided in a canal are made of a) cement concrete b) brick masonry c) iron rod d) both (a) and (b) 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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