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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1 / 30

1. The method for training of rivers is

a) groynes

b) guide bank

c) pitched banks

d) all of the above

2 / 30

2. The top of the capillary zone

a) lies below the water table at every point

b) lies above the water table at every point

c) coincides with the water table at every point

d) none of the above

3 / 30

3. On a suitable foundation, the earthen dam can be constructed up to a height of

a) 50 m

b) 100 m

c) 150 m

d) 200 m

4 / 30

4. A straight glacis type fall with a baffle platform and a baffle wall is called

a) montague fall

b) sarda type fall

c) glacis fall

d) inglis fall

5 / 30

5. 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

6 / 30

6. The crop that improves the nitrogen content of the soil is

a) aquatic crop

b) perennial crop

c) leguminous crop

d) all of the above

7 / 30

7. The kor depth for rice is 19 cm, and the kor period is 14 days. The outlet factor for this will be

a) 473 hectares/m³/sec

b) 637 hectares/m³/sec

c) 837 hectares/m³/sec

d) none of the above

8 / 30

8. According to Khosla's theory, the exit gradient in the absence of a downstream cutoff is

a) zero

b) unity

c) infinity

d) none of the above

9 / 30

9. Gibb's module is a type of

a) non-modular outlet

b) semi-modular outlet

c) rigid-modular outlet

d) open flume outlet

10 / 30

10. 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

11 / 30

11. Obstruction placed on the downstream floor of a fall to dissipate the velocity of the flowing water and maintain the standing wave on the glacis is known as

a) energy block

b) friction block

c) rough block

d) waste block

12 / 30

12. The ratio of the rate of change of the discharge of an outlet to the rate of change of the discharge of the distributing channel is called

a) sensitivity

b) flexibility

c) proportionality

d) setting

13 / 30

13. 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

14 / 30

14. The name of the structure that destroys the energy is called

a) stilling basin

b) reservoir

c) head regulator

d) all of the above

15 / 30

15. 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

16 / 30

16. *Site of the head works is good when

a) it is situated on a river bend

b) it is close to the irrigated area

c) good foundation is available for the structure

d) both B and C above

17 / 30

17. For syphon aqueducts, the highest flood level of the drain is

a) much above the canal bed

b) much below the canal trough

c) at the level of the canal bed

d) none of the above

18 / 30

18. The fertility of the soil is adversely affected when the pH value is more than

a) 7

b) 9

c) 11

d) 14

19 / 30

19. The velocity at which eddies in the flow die out is called

a) critical velocity

b) lower critical velocity

c) higher critical velocity

d) none of the above

20 / 30

20. 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

21 / 30

21. *Economic height of a dam is

a) very low

b) very high

c) corresponds to the minimum cost of a dam per unit of storage

d) none of the above

22 / 30

22. *According to Manning's formula, the velocity is inversely proportional to

a) rugosity coefficient

b) HMD

c) gradient

d) all of the above

23 / 30

23. 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

24 / 30

24. A canal used to drain off water from waterlogged areas is

a) ditch canal

b) drain canal

c) perennial canal

d) none of the above

25 / 30

25. Which of the following is a leguminous crop?

a) rice

b) potato

c) groundnut

d) hemp

26 / 30

26. 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

27 / 30

27. Waterlogging of fields can be reduced by

a) providing canal lining

b) providing intercepting drains

c) controlling intensity of irrigation

d) all of the above

28 / 30

28. The numerical value of the base period is

a) less than the crop period

b) more than the crop period

c) equal to the crop period

d) all of the above

29 / 30

29. *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

30 / 30

30. Optimum depth of kor watering for a rice crop is

a) 13.5 cm

b) 16.5 cm

c) 19 cm

d) 21 cm

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Irrigation Engineering Online Test – Paper 2

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