Q.

Encircle the correct answer 1. Stage-3 gullly development refers to a b c d 2. Healing stage Stabilized stage Initiation stage None of above

Loose rock fill dams are preferred for gully control, where a b c d gullies are of greater depth gullies are of lesser depth stones are readily available None of above

3.

Materials used for constructing permanent gully control structures are a b c d earth material, vegetation stones and branches of trees masonry, reinforce concrete, earth etc. None of above

4.

Drop inlet structures are used a b c d for storage of water in the structures which have dual purpose to raise the grade of deep gullies None of above

5.

The grassed waterways are lined with a b c d bricks masonry materials grass cover of dry mass live erosion resistant grasses

6.

Chute spillway are normally constructed at a b c d gully head low slope gully bed bunds as surplusing arrangement None of above

7.

The design of permanent structures is done based on the return period of a b c d. 5-10 years 10-20 years 25-30 years None of above

8.

The natural grassed waterways are generally found in the shape of a b c d square triangular parabolic rectangular

9.

For the design of grassed waterway, the permissible velocity for sparse grass cover condition is taken as a b c d 0.9 m/s 1.5 to 2.0 m/s 3.0 m/s 4.0 m/s

10.

Very small gullies have the dimension of a b c d 3m depth and bed width not more than 18m 5m depth and bed width not more than 18m Depth and width as 5m None of the above

11

The sheet of water which overflows a weir is called a b c d Head static head Nappe none

12

The basic formula for calculating discharge through a weir is a b c d Q = LHm Q = CLmHn Q = CLHm Q = LmHn

13

Tensiometer is used for finding out a b c d permanent wilting point field capacity Wilting point soil moisture content

14

The infiltration rate ____________ during irrigation. a b c d increases decreases Both (a) and (b) None of the above

15

The hydraulic conductivity of gravel varies from a b c d 1.0 to 1000 m/day 100 to 1000 m/day 1.0 to 100 cm/day None of the above

16

The uniformity coefficient of sprinkler system should be a b c d 50-60% 60-80% 80-90% 100%

17

The sum of static suction lift and static discharge head is called a b c d Pressure head Velocity head Total static head Static suction head

18

In underground pipeline system the line terminates at a b c d Air vent End plug Riser valve Pump stand

19

Amongst the four distinct growth stages of seasonal crops the maximum value of crop coefficient Kc is during a initial stage

b c d 20

crop development stage mid-season stage late season stage

The water available to plants is a b c d capillary water Hygroscopic water Gravitational water None of the above

21

The depth of mole drains ranges between a b c d 45-120 cm 45-120 mm 10-30 cm 10-30 mm

22

The Hooghoudts equation for drain spacing represents a b c d Mannings Equation Ellipse equation Both (a) and (c) None of the above

23

The most suitable device for measuring large flows in earth channels in a canal water distribution system is a b c d In-built Parshall flume Suppressed rectangular weir Broad-crested rectangular weir Truncated flume`

24

Reshaping of the surface of land to a planned grade is called a b c d Rough grading Land leveling Bench leveling Land clearing

25

Archemedian screw is suitable to lift water from open bodies to heights ranging from a b c 0.5 to 1.2 m 1.2 to 3 m 2 to 3 m

d 26

3 to 4 m

The storage properties of confined and semi-confined aquifers are expressed by a b c d Coefficient of storage Well yield Specific yield None of above

27

In drip irrigation, water flows from the emission points through the soil by a b c d infiltration percolation capillarity capillarity and gravity

28

Drainage removes a b c d capillary water Hygroscopic water Gravitational water None of the above

29

Pump suitable for lifting water from deep wells is a b c d Propeller pump Horizontal centrifugal pump Submersible pump Both a & b

30

Confined aquifer is also called as a Free aquifer b Water table aquifer c Artesian aquifer d Non-artesian aquifer Specific yield term is associated with a Confined aquifer b Semi-confined aquifer c Unconfined aquifer

31

d 32

None of the above

Formation that contains water but transmits water at slow rate is called as a b c d Aquifer Aquifuge Aquiclude Hard pan

33

Salt concentration is expressed in a b c d l/gm kg/l mg/l none of above

34.

A saline soil have a b c d EC < 4 & ESP> 15 EC > 4 & ESP> 15 EC < 4 & ESP< 15 EC > 4 & ESP< 15

35

Interceptor drains are provided to control: a b c d Surface drainage subsurface drainage salinity and alkalinity None

36

Leaching requirement is the ratio of: a b c d Depth of irrigation water to the salt conc. of irrigation water Depth of percolating water to the salt conc. of percolating Electric conductivity of irrigation water to the electric conductivity of drainage Depth of rainfall to depth of irrigation water

37

The gauge used to measure the depth of flow over a weir is located upstream of the weir at a distance of about a twice the approximate head b thrice the approximate head c four times the approximate head d five times the approximate head

38

Hooghoudts equation for drainage spacing is for a b c d Steady state flow Unsteady state flow Uniform flow Non uniform flow

39

Perched aquifer lies a b c d above the main water table below the main water table above the soil none of above

40

Semi-confined aquifer is also called as a b c d leaky aquifer semi-confined aquifer confined aquifer none of above

41

The wetted perimeter is maximum when open channel is a b c d Rectangle Semi circle Square Triangular

42

The most important factor influencing the evapotranspiration of a crop is a b c d physiology of the crop stage of growth of the crop degree of crop cover the location from where the data are obtained

43

The water application rate of sprinkler should be a b c d Less than basic infiltration rate More than basic infiltration rate Equal to basic infiltration rate None of the above

44

Hydrant is part of a b c d Drip irrigation Border irrigation Open channel Underground pipeline

45

Steady flow a. dv/dt = 0, dy/dt=0 b. dv/dl = 0, c. dy/dl = 0, dy/dt0 d. dy/dl 0, dy/dt=0 Type of impellor used for agricultural purpose a. b. c. d. e. Open Closed Semi open Semi closed

46

47

Tracer technique of discharge measurement is a. Volumetric method b. Velocity area method c. Direct discharge method d Dilution method

48

Hydraulic radius is the ratio of a. Cross sectional area and perimeter of the channel b. Wetted area and wetted perimeter of the channel c. Top width and bottom width of channel d None of the above

49

One ha cm of volume of water is equal to

a. 1000 cm3 b. 106 cm3

50

The equivalent depth (d) in Hooghoudts equation for drainage spacing is: a. b. c. d. d<D d=1 d>D None

51

The following methods of surface drainage is most suited to the soils that need combination of surface and sub surface drainage: a b c d Parallel open ditch system Random field ditch system Parallel field drain system Bedding system

52

The slot width of a well screen should be limited to

a b c d 53

1.0 to 1.5 mm 1.5 to 5.0 mm 5.0 to 7.5 mm 7.5 to 10.0 mm

Thickness of capillary fringe is found greater in a. b. c. d. Fine textured soils Coarse textured soils Medium textured soils Both b& c

54

In homogeneous artesian aquifer, the screen length is kept a 70-80% of aquifer thickness b 70% of aquifer thickness c 50% of aquifer thickness d 20-25% of aquifer thickness

55

An uniform material is one where a. b. c. d Cu is less than 2 Cu is more than 2 Grain size is 0.25 mm None of above

56

The overland flow in a border strip is a case of a b c d Varied flow Steady flow with decreasing discharge Unsteady flow with decreasing discharge Uniform flow

57

Saline soil can be reclaimed by

a b c d 58

Leaching Scrapping Adding gypsum By growing salt tolerant crops

The pump discharge through well is roughly measured by a Current meter b Velocity-area method c Co-ordinate method d Parshall flume Cusec is water measuring unit in a MKS

59

b c d
60

CGS FPS None

The pressure head in a sprinkler system is converted into velocity head at a b c d the sprinkler head the sprinkler jet the nozzle the riser pipe

Answers
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. a c c c d a c c a a c c d b a c c b c a a b c b a a d c c c c c c b b c c a a a b b a

44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60.

d a b d a b a a b a a a c a c c b