Irrigation Engineering Online Test – Paper 3

1. *The river training work is concentrated with

2. *Surface float method is used for the velocity measurement while the current meter is used for the measurement of

3. Optimum depth of kor watering for wheat in the plains or terai is

4. According to Kennedy's theory, the silt supporting eddies are generated due to

5. The kor depth for rice is 19 cm, and the kor period is 14 days. The outlet factor for this will be

6. *The major resisting force in a gravity dam is

7. In a non-gravity weir, the uplift pressure is resisted by

8. The ratio of the total volume of water delivered to a crop to the area on which it has been spread is called

9. *Available moisture may be defined as the

10. Which of the following crops are in Rabi groups?

11. Darcy's formula is given by

12. On a suitable foundation, the earthen dam can be constructed up to a height of

13. *The hydraulic jump is the example of

14. Into how many components is the diversion head work divided?

15. A canal, constructed by the side of and generally parallel to the parent canal with a different bed slope is called

16. The most suitable location of a canal headwork is

17. The uplift pressure on the face of a drainage gallery in a dam is equal to

18. The time (generally in days) for which a crop occupies a field to attain its maturity is known as

19. In a gravity canal, F.S.L is always

20. Bed bars provided in a canal are made of

21. The fall using a parabolic glacis for energy dissipation is

22. *Attracting type spurs

23. Cross walls provided across the stream, built under the floor of a hydraulic structure at the upstream and downstream ends of the pavement to avoid scour and protect floors, abutments etc., and which is carried up to another, is called

24. In irrigation canals, drops are needed if

25. *Separation of flow occurs when

26. The canal head regulator is provided at the head of the offtaking canal to

27. Vertical drop fall is satisfactory for a drop up to

28. *The maximum failure of earthen dams occurs due to

29. A land is called waterlogged

30. In an earthen dam, seepage through the foundation is controlled by providing

31. Canals taking off from a river with or without a head regulator are called

32. Vertical acceleration due to an earthquake results in

33. *After entering the canal, sediments are removed by the

34. *The main function of a diversion head works of a canal from a river is to

35. Boulder lining is useful where

36. Waterlogging may result from

37. A river bend in alluvial soil is characterized by

38. Longitudinal shallow retaining walls built near ground level for supporting the pitching on the face of earthen embankment is called

39. The fall is designed and constructed to satisfy the condition that

40. *Mean velocity of the canal should never be

41. The type of irrigation during a low quantity of water

42. For an earthen dam, least suited spillway is:

43. *The width and length of meander vary approximately with

44. A crop that takes more than 4 months to mature is called

45. A repelling groyne is aligned

46. The water face of the guide banks is protected by

47. For the upstream face of an earthen dam, the most adverse condition for the stability of slope is

48. *To avoid an interruption in the field of a siphon, the air vessel is provided

49. If the value of sodium-absorption ratio lies between 10 to 18, it is called

50. The consumptive use of water for a crop