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. *Mean velocity of the canal should never be

a) less than the critical velocity

b) more than the critical velocity

c) equal to the critical velocity

d) none of the above

2 / 30

2. *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

3 / 30

3. *The operation, which washes out salts from the upper zone of the soil, is called

a) reclamation

b) leaching

c) efflorescence

d) salinity

4 / 30

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

a) vertical drop fall

b) glacis fall

c) inglis fall

d) montague fall

5 / 30

5. When the discharge of a well decreases by the design amount, then this type of well is called

a) damage well

b) rough well

c) less capacity well

d) sick well

6 / 30

6. Water found on the surface of the soil, which is not capable of movement either by gravity or capillary and can only be driven off by heat, is called

a) water vapour

b) moisture

c) hygroscopic water

d) none of the above

7 / 30

7. The degree of sinuosity is the ratio between

a) meander length and meander width

b) meander width and river bed width

c) curved length and straight air length

d) none of the above

8 / 30

8. *Bell bunds are

a) guide bands for training a river at the site of a bridge or weir

b) barriers made of timber, filled with stone or other suitable material

c) fixed distances over which surface floats are lined

d) none of the above

9 / 30

9. A protection at the downstream end of a weir or fall, consisting of blocks of concrete or masonry, is called

a) scour

b) baffles

c) talus

d) flank wall

10 / 30

10. *The measure to remove waterlogging of land is

a) to reduce percolation from canals and watercourses

b) to increase outflow from the groundwater reservoir

c) both (a) and (b)

d) none of the above

11 / 30

11. River resulting from a deficit of sediments in flowing water is

a) degrading type

b) aggrading type

c) meandering type

d) none of the above

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. The necessity of irrigation is required due to

a) less rainfall

b) non-uniform rainfall

c) commercial crops

d) all of the above

14 / 30

14. Crop ratio is the ratio of area irrigated

a) in rabi season to kharif season

b) in kharif season to rabi season

c) under perennial crop to total crop

d) under perennial crop to non-perennial crop

15 / 30

15. The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as

a) water conveyance efficiency

b) water application efficiency

c) water use efficiency

d) any of the above

16 / 30

16. *Meandering of the river increases the length of the river while cut-off

a) increase in the width of the river

b) decrease the length of the river

c) increase the length of the river

d) decrease the width of the river

17 / 30

17. Retrogression of the bed level of a river downstream a weir or barrage occurs due to

a) heavy impact of water

b) less percentage of silt

c) increase of the bed level

d) soft soil strata

18 / 30

18. *Critical depth is

a) the depth corresponding to critical velocity

b) the maximum permissible depth of a channel

c) the depth corresponding to critical flow

d) any of the above

19 / 30

19. The most suitable section of a lined canal is

a) triangular section with a circular bottom for small canals

b) trapezoidal section with rounded corners for large canals

c) both (a) and (b) above

d) none of the above

20 / 30

20. River on alluvial plains is usually

a) aggrading type

b) degrading type

c) meandering type

d) stable type

21 / 30

21. A rectangular channel is said to be wide if

a) width is five times the depth of flow

b) width is five times the depth of flow

c) width is more than ten times the depth of the flow

d) none of the above

22 / 30

22. *The structure provided where natural drainage and canal meet at the same level is

a) aqueduct

b) siphon

c) super passage

d) level crossing

23 / 30

23. Vertical acceleration due to an earthquake results in

a) an increase in the effective weight of the dam

b) a decrease in the effective weight of the dam

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

d) none of the above

24 / 30

24. The type of fall suitable for any discharge is

a) vertical type

b) straight glacis fall with baffle wall

c) straight glacis fall without a baffle wall

d) all of the above

25 / 30

25. The average delta of a rice crop is nearly

a) 30 cm

b) 60 cm

c) 120 cm

d) 150 cm

26 / 30

26. Tortuosity of a meandering river is the ratio of

a) meander length and meander belt

b) curved length along the channel to the direct axial length of the river reach

c) direct axial length of the river reach to the curved length of the channel

d) meander belt to meander length

27 / 30

27. *Available moisture may be defined as the

a) moisture content at permanent wilting point

b) difference in water content of the soil between field capacity and permanent wilting point

c) maximum moisture-holding capacity

d) all of the above

28 / 30

28. The silting in a channel occurs due to

a) defective outlet

b) defective head regulator

c) channel not in regime

d) all of the above

29 / 30

29. *Rugosity coefficient for a silt clay

a) 0.0225

b) 0.025

c) 0.0275

d) 0.03

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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