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: 30 Time Allotted: 30 minutes Passing Score: 50% Randomization: Yes Certificate: No Do not refresh the page! 👍 All the best! 1 / 30 1. *Drop structures in the canal are provided for a) providing a bridge b) energy dissipation c) maintaining ground slope d) creating high velocity 2 / 30 2. Whenever an embankment has to be built on unreliable soil, provision is made for a) sand core b) percolation c) clay puddle d) all of the above 3 / 30 3. In an earthen dam, seepage through the embankment is controlled by a) drainage gallery b) drain trenches c) relief walls d) horizontal blanket 4 / 30 4. 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 5 / 30 5. 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 6 / 30 6. 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 7 / 30 7. A divide wall is provided a) parallel to the axis of weir and upstream of it b) perpendicular to the axis of weir c) at right angle to the axis of weir d) none of the above 8 / 30 8. 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 9 / 30 9. Tortuosity of a meandering river is always a) more than one b) equal to one c) less than one d) none of the above 10 / 30 10. The "outlet discharge factor" is the duty at the head of a) main canal b) branch canal c) watercourse d) distributory 11 / 30 11. 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 12 / 30 12. The fertility of the soil is adversely affected when the pH value is more than a) 7 b) 9 c) 11 d) 14 13 / 30 13. An artesian aquifer is one where a) water surface under the ground is at atmospheric pressure b) water is under pressure between two impervious strata c) water table serves as the upper surface of the zone of saturation d) none of the above 14 / 30 14. *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 15 / 30 15. *River training for depth is achieved by a) groynes b) dykes of leaves c) groynes and bandalling d) all of the above 16 / 30 16. 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 17 / 30 17. 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 18 / 30 18. In a gravity dam, the main overturning force is a) self-weight of the dam b) wind pressure c) water pressure d) uplift pressure 19 / 30 19. 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 20 / 30 20. The water face of the guide banks is protected by a) one layer stone pitching b) two-layer stone pitching c) three-layer stone pitching d) four-layer stone pitching 21 / 30 21. Top of the weir is, a) ridgecrest b) crest c) head d) peak 22 / 30 22. *In a concrete-lined canal, the permissible velocity of water is a) 1 m/sec b) 2 m/sec c) 3 m/sec d) 4 m/sec 23 / 30 23. 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 24 / 30 24. The relation between duty (D) in hectares/cumec depth of water in meters and base period (B) in days is given by a) Δ = 8.64 B / D b) Δ = 8.64 D / B c) Δ = 8.64 B d) none of the above 25 / 30 25. The shape of the lined canal recommended by ISI is a) triangular b) rectangular c) parabolic d) trapezoidal 26 / 30 26. The area under which inferior crops can be grown without irrigation is a) arid zone b) semi-arid zone c) fertile zone d) desert 27 / 30 27. *Attracting type spurs a) pointing up stream b) pointing down stream c) parallel to bank d) perpendicular to bank 28 / 30 28. 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 29 / 30 29. *The hydraulic jump is known as a) standing wave b) positive surge c) negative wave d) none of the above 30 / 30 30. *Fall is provided in the canal of a) ridge b) valley c) contour d) inundation 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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