Irrigation Engineering Online Test - Paper 2

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. The most commonly adopted method of irrigation for cereal crops is

a) furrow flooding

b) border flooding

c) check flooding

d) free flooding

2 / 30

2. *In irrigation canals, the reasons for water losses are

a) absorption

b) evaporation

c) percolation

d) all of the above

3 / 30

3. Waterlogging may result from

a) over-irrigation

b) inadequate drainage

c) seepage from adjoining reservoirs, etc.

d) all of the above

4 / 30

4. The maximum quantity of water that can be supplied from the reservoir with full guarantee during the worst dry period is known as

a) safe yield

b) design yield

c) secondary yield

d) average yield

5 / 30

5. An aggrading river is

a) scouring river

b) silting river

c) both (a) and (b) of above

d) none of the above

6 / 30

6. Trap efficiency of a reservoir is a function of

a) capacity/Inflow ratio

b) capacity/outflow ratio

c) the total inflow

d) age of the reservoir

7 / 30

7. The discharge coefficient of an ogee spillway is:

a) 1.2

b) 1.8

c) 2.02

d) 3.7

8 / 30

8. A weir, which has a tail water level higher than the weir crest, by which the discharge is affected, is called

a) negative head weir

b) submerged weir

c) flooded weir

d) none of the above

9 / 30

9. Area velocity method is used to measure.

a) area

b) velocity

c) discharge

d) none of the above

10 / 30

10. 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

11 / 30

11. A counter berm is

a) a horizontal benching provided on the outer slope

b) a vertical benching provided on the outer edge of the bank

c) a horizontal benching provided on the inside slope

d) a vertical benching provided on the inner edge of the bank

12 / 30

12. *If the irrigation canal and drain are at the same level, the cross drainage work is achieved by providing

a) a level crossing

b) an inlet and outlet

c) siphon aqueduct

d) both (a) and (b) above

13 / 30

13. In an earthen dam, seepage through the embankment is controlled by

a) drainage gallery

b) drain trenches

c) relief walls

d) horizontal blanket

14 / 30

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

a) vertical drop fall

b) glacis fall

c) inglis fall

d) montague fall

15 / 30

15. *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

16 / 30

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

a) groundnut

b) sugar cane

c) bajra

d) none of the above

17 / 30

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

a) erosion due to the velocity of water

b) slipping due to steeper slopes

c) over topping due to insufficient height

d) leakage due to cavities

18 / 30

18. *The most efficient section of a channel is

a) triangular

b) rectangular

c) square

d) trapezoidal

19 / 30

19. The operation during the infiltration of water below the ground surface is

a) adsorption

b) absorption

c) ozonization

d) sedimentation

20 / 30

20. 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

21 / 30

21. *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

22 / 30

22. The most suitable location of a canal headwork is

a) boulders stage of the river

b) delta stage of the river

c) rock stage of the river

d) trough stage of the river

23 / 30

23. 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

24 / 30

24. Which of the following is a leguminous crop?

a) rice

b) potato

c) groundnut

d) hemp

25 / 30

25. A repelling groyne is aligned

a) parallel to bank

b) perpendicular to bank

c) pointing up stream

d) pointing down stream

26 / 30

26. The other name for an unconfined aquifer is

a) temporary aquifer

b) permanent aquifer

c) free aquifer

d) perched aquifer

27 / 30

27. Sediment deposit in a reservoir can be reduced by

a) providing vegetal cover in the catchment area

b) avoiding reservoir sites that are prolific sources of sediment

c) adopting soil conservation measures in the catchment area

d) all of the above

28 / 30

28. *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

29 / 30

29. In a 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

30 / 30

30. When the base period of the crop is 100 days, the delta for the crop will be if the duty of the crop is 432 he/cumec.

a) 432 cm

b) 200 cm

c) 864 cm

d) 100 cm

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Irrigation Engineering Online Test – Paper 2

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