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 process by which unculturable soil made culturable is known as a) reclamation b) leaching c) efflorescence d) salinity 2 / 50 2. *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 3 / 50 3. *The phenomenon of salts coming up in solution and forming a layer of crust on the surface after the evaporation of water is known as a) reclamation b) leaching c) efflorescence d) salinity 4 / 50 4. *The maximum amount of water required in the case of paddy is at the time of a) puddling b) seeding c) harvesting d) flowering 5 / 50 5. 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 6 / 50 6. The structures constructed transverse to the river flow, which extend from bank to the river, are called a) groynes b) spurs c) platform d) both (a) and (b) of above 7 / 50 7. Pitot tube is used to measure a) area b) velocity c) discharge d) none of the above 8 / 50 8. *Lining of an irrigation channel a) increases the waterlogging area b) decreases the waterlogging area c) does not change the waterlogging area d) none of the above 9 / 50 9. *Drain over the irrigation canal is achieved by providing a) a siphon b) super passage c) an aqueduct d) both (a) and (b) above 10 / 50 10. 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 11 / 50 11. In a non-gravity weir, the uplift pressure is resisted by a) weight of floor b) bending action of reinforced concrete floor c) punching action of the floor d) none of the above 12 / 50 12. 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 13 / 50 13. 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 14 / 50 14. 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 15 / 50 15. As the salinity of water increases, electrical conductivity a) remains the same b) none of the above c) increases d) decreases 16 / 50 16. 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 17 / 50 17. A low gravity dam is the one in which a) the height of the water stored is less than 30 m b) the resultant just passes through the downstream middle third point c) the maximum principal stress is less than the allowable crushing strength and the upstream face is vertical d) the height of the dam is less than 5 times the top width 18 / 50 18. *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 19 / 50 19. The mean velocity, for a channel of given depth, which will just keep the channel free from silting or scouring its bed throughout the year, is called a) optimum velocity b) ideal velocity c) critical velocity d) all of the above 20 / 50 20. For a proportional outlet, the flexibility is a) zero b) one c) between zero and one d) more than one 21 / 50 21. Top of the weir is, a) ridgecrest b) crest c) head d) peak 22 / 50 22. *The main function of a diversion head works of a canal from a river is to a) remove silt b) control floods c) store water d) raise water level 23 / 50 23. Waterlogging may result from a) over-irrigation b) inadequate drainage c) seepage from adjoining reservoirs, etc. d) all of the above 24 / 50 24. *When the canal runs below the drain, the cross drainage work provided is called a) aqueduct b) super passage c) level crossing d) syphon 25 / 50 25. *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 26 / 50 26. The kor depth for rice is 19 cm, and the kor period is 14 days. The outlet factor for this will be a) 473 hectares/m³/sec b) 637 hectares/m³/sec c) 837 hectares/m³/sec d) none of the above 27 / 50 27. 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 28 / 50 28. *Weir method is used to measure a) area b) velocity c) discharge d) none of the above 29 / 50 29. *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 30 / 50 30. The water-bearing stratum that creates a groundwater reservoir and feeds wells and springs is called a) underground spillway b) aquifer c) equalize d) none of the above 31 / 50 31. *The river training work is concentrated with a) discharge of water b) depth of water c) amount of sediment d) all of the above 32 / 50 32. 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 33 / 50 33. *A river training work is generally required when the river is a) aggrading type b) degrading type c) meandering type d) stable type 34 / 50 34. 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 35 / 50 35. 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 36 / 50 36. 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 37 / 50 37. *The most efficient section of a channel is a) triangular b) rectangular c) square d) trapezoidal 38 / 50 38. A most economical section is one for which a given cross-sectional area, slope of bed, and coefficient of resistance has a) maximum wetted perimeter b) maximum discharge c) maximum depth of flow d) minimum depth of flow 39 / 50 39. *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 40 / 50 40. *Due to topography, if the space is not available, the most suitable spillway is a) ogee spillway b) chute spillway c) shaft spillway d) straight drop spillway 41 / 50 41. *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 42 / 50 42. 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 43 / 50 43. A groyne with a curved head is known as a) Burma groyne b) Dehny groyne c) Hockey groyne d) Meandering groyne 44 / 50 44. *The discharge through a channel is maximum when a) d = b/3 b) m = d/2 c) d = b d) b = 1.5d 45 / 50 45. 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 46 / 50 46. The fall using a parabolic glacis for energy dissipation is a) vertical drop fall b) glacis fall c) inglis fall d) montague fall 47 / 50 47. 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 48 / 50 48. 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 49 / 50 49. *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 50 / 50 50. Area velocity method is used to measure. a) area b) velocity c) discharge 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
