Irrigation Engineering Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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Certificate: No
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1 / 30

1. *The amount of water required to fill up the pore spaces in soil particles by replacing all air held in pore spaces is known as

a) filled capacity

b) available moisture

c) saturation capacity

d) all of the above

2 / 30

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

a) sprinkler irrigation

b) drip irrigation

c) free flooding

d) furrow method

3 / 30

3. *A groyne

a) widens a river channel to improve its depth

b) deteriorates the river banks

c) silts up the area in the vicinity by creating a slack flow

d) none of the above

4 / 30

4. *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

5 / 30

5. A wall built along the bank of a river, parallel to the direction of flow for directing fast flow from a sluice or spillway, to prevent eroding banks of a river or canal, is called

a) toe wall

b) training wall

c) wing wall

d) divide wall

6 / 30

6. Lands or climate that lack sufficient water for agriculture without artificial irrigation are called

a) dry zone

b) arid zone

c) semi-arid zone

d) hybrid arid zone

7 / 30

7. The volume of water stored between normal pool level and the maximum pool level is known as

a) bank storage

b) surcharge storage

c) useful storage

d) deep storage

8 / 30

8. *The consumptive use of water for a crop

a) is measured as the volume of water per unit area

b) is measured as the depth of water on the irrigated area

c) may be supplied partly by precipitation and partly by irrigation

d) all of the above

9 / 30

9. *The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal is called

a) a syphon

b) aqueduct

c) syphon aqueduct

d) super passage

10 / 30

10. 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

11 / 30

11. The crest level of an emergency spillway is kept as

a) the same level as the main spillway

b) slightly below the crest level of the main spillway

c) at the full reservoir level

d) slightly above the crest level of the main spillway

12 / 30

12. *The hydraulic jump is the example of

a) gradually varied flow

b) rapidly varied flow

c) spatially varied flow

d) none of the above

13 / 30

13. *In a stone masonry-lined canal, the permissible velocity of water is

a) 1 m/sec

b) 2 m/sec

c) 3 m/sec

d) 4 m/sec

14 / 30

14. A regulator provided with under sluices for the escape of washout of the heavily sand-laden bottom water of a channel is known as

a) silt regulator

b) silt extractor

c) silt ejector

d) all of the above

15 / 30

15. 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

16 / 30

16. *The hydraulic jump is known as

a) standing wave

b) positive surge

c) negative wave

d) none of the above

17 / 30

17. For a flood control reservoir, the effective storage is equal to

a) useful storage - valley storage + surcharge storage

b) useful storage + valley storage + surcharge storage

c) useful storage + surcharge storage

d) useful storage - valley storage

18 / 30

18. *Silt-carrying capacity of water in a canal depends on

a) silt charge

b) discharge

c) surface slope

d) all of the above

19 / 30

19. In an ion exchange process when ions are transported from water to solid, ion-exchange media is fixed or fluidized bed, the process is termed as

a) flocculation

b) demineralization

c) ion-exchange

d) deionization

20 / 30

20. A river bend in alluvial soil is characterized by

a) silting on the convex side

b) scouring on the concave side

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

d) silting on the concave side and scouring on the convex side

21 / 30

21. A hydraulic structure is designed to withstand

a) seepage

b) hydraulic jump

c) hydraulic pressure

d) all of the above

22 / 30

22. *The meandering river is always

a) maximum discharge

b) average discharge

c) dominant discharge

d) none of the above

23 / 30

23. *Fall is provided in the canal of

a) ridge

b) valley

c) contour

d) inundation

24 / 30

24. The other name for an unconfined aquifer is

a) temporary aquifer

b) permanent aquifer

c) free aquifer

d) perched aquifer

25 / 30

25. An aggrading river is

a) scouring river

b) silting river

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

d) none of the above

26 / 30

26. Salt present in water, harmful for cultivation purposes, is

a) sodium carbonate

b) potassium sulfate

c) calcium sulfate

d) none of the above

27 / 30

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 / 30

28. 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

a) back walls

b) curtain wall

c) flarred wall

d) parapet wall

29 / 30

29. *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

30 / 30

30. *Weed growth in a canal leads to

a) an increase in discharge

b) a decrease in silting

c) a decrease in discharge

d) an increase in the velocity of flow

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