Irrigation Engineering Online Test - Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
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1 / 30

1. 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

2 / 30

2. A groyne with a curved head is known as

a) Burma groyne

b) Dehny groyne

c) Hockey groyne

d) Meandering groyne

3 / 30

3. A sudden fall of the level of the ground along the alignment of the canal joined by an inclined bed is called a

a) jump

b) sudden fall

c) rapid fall

d) hydraulic jump

4 / 30

4. In a non-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

5 / 30

5. 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

6 / 30

6. If the electrical conductivity of water is between 750 to 2250 micro mhos/cm at 25°C, then it is classified as

a) low salinity water

b) high salinity water

c) medium salinity water

d) none of the above

7 / 30

7. If the top width is provided for the roadway, the resultant force for full reservoir condition will

a) shift towards the heel

b) shift towards the toe

c) remain stationary

d) none of the above

8 / 30

8. In a canal syphon, flow is

a) pipe flow

b) under negative pressure

c) under atmospheric pressure

d) none of the above

9 / 30

9. The structures constructed transverse to the river flow, which extend from bank to the river, are called

a) groynes

b) spurs

c) platform

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

10 / 30

10. Intensity of irrigation is

a) is the percentage of culturable commanded area proposed to be irrigated annually

b) is always more than 100%

c) is the percentage that could be ideally irrigated

d) all of the above

11 / 30

11. 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

12 / 30

12. *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

13 / 30

13. In a chute spillway, the flow is generally:

a) laminar

b) turbulent

c) critical

d) supercritical

14 / 30

14. 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

15 / 30

15. *Due to topography, if the space is not available, the most suitable spillway is

a) ogee spillway

b) chute spillway

c) shaft spillway

d) straight drop spillway

16 / 30

16. A minimum of 90 cm freeboard is provided if the discharge in the canal is

a) between 10 and 30 cumecs

b) between 30 and 60 cumecs

c) over 60 cumecs

d) over 100 cumecs

17 / 30

17. A multipurpose reservoir is

a) planned and constructed to serve various purposes

b) designed for one purpose but serves more purposes

c) both (a) and (b)

d) none of the above

18 / 30

18. The width of a "Dowels" is generally kept between 32 to 60 cm, and the height above the road level should be more than

a) 10 cm

b) 20 cm

c) 30 cm

d) 40 cm

19 / 30

19. *The discharge in an open channel is inversely proportional to

a) roughness of the section

b) sectional area

c) slope of the channel

d) hydraulic radius

20 / 30

20. Weirs designed and constructed on Bligh's theory failed due to

a) undermining of floors

b) undermining of the sub-soil

c) undermining of the foundation work

d) all of the above

21 / 30

21. For irrigation purposes, the pH value of water should be

a) between 3 and 6

b) between 6 and 8.5

c) between 8.5 and 11

d) more than 11

22 / 30

22. *The discharge through a channel is maximum when

a) m = d/3

b) m = b/2

c) m = d

d) m = 1.5d

23 / 30

23. Percolation loss is less in the case of

a) sandy soil

b) black cotton soil

c) silty soil

d) all of the above

24 / 30

24. A contour canal

a) irrigates only on one side

b) is most suitable in hilly areas

c) is generally aligned parallel to the contour of the area

d) all of the above

25 / 30

25. The "outlet discharge factor" is the duty at the head of

a) main canal

b) branch canal

c) watercourse

d) distributory

26 / 30

26. A fall, which maintains its depth, is

a) a low weir fall

b) a trapezoidal notch fall

c) a rectangular notch fall

d) all of the above

27 / 30

27. Horizontal acceleration due to an earthquake results in

a) hydrodynamic pressure

b) inertia force into the body of the dam

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

d) none of the above

28 / 30

28. The forces considered for the analysis of an elementary profile of a gravity dam under an empty reservoir condition are

a) uplift pressure

b) water pressure

c) self-weight

d) earthquake pressure

29 / 30

29. SHAFT spillway is the same as

a) conduit spillway

b) tunnel spillway

c) morning glory spillway

d) trough spillway

30 / 30

30. The fall, with the crest usually at or near the bed level, without a glacis, is called

a) rapid fall

b) notch fall

c) natural fall

d) regulated fall

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Irrigation Engineering Online Test – Paper 2

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