Irrigation Engineering Mock Test 2

10%

Question 1 of 10

1. Which of the following characteristics is wrong about extensive irrigation?

The crop production will be minimal per unit of available water

It creates a perpetual scarcity of water

Agricultural production and protection against famine will be at optimum levels

The irrigation extends to a large area with the lowest available supply

Question 1 of 10

Question 2 of 10

2. The scouring and silting on the river banks raise the flood levels for the particular discharge.

True

False

Question 2 of 10

Question 3 of 10

3. The basic mechanism behind the phenomenon of sediment transport is ______________

drag force in the direction of the flow

free motion of the sediment particles

drag force opposite to the direction of the flow

force exerted by water vertically

Question 3 of 10

Question 4 of 10

4. Calculate the critical tractive stress if the median diameter of the sand bed is 1.0 mm.

0.53 N/m²

1.61 N/m²

0.73 N/m²

0.61 N/m²

Question 4 of 10

Question 5 of 10

5. Which type of canal does not need cross drainage structures?

Watershed Canal

Contour Canal

Side Slope Canal

Field Channel

Question 5 of 10

Question 6 of 10

6. The CCA of a water course is 1500 hectares. The intensity of sugarcane and wheat crops is 20% and 40% respectively. The duties for the crops at the head of the watercourse are 730 hectares/cumec and 1600 hectares/cumec respectively. Calculate the design discharge at the outlet assuming a time factor equal to 0.8.

0.72 cumec

1.0 cumec

0.92 cumec

0.55 cumec

Question 6 of 10

Question 7 of 10

7. What is the problem in India for artificial channels?

Untimely Rains

Improper Usage of Channels

Formation of Depressions

Formation of Alluvial Soil

Question 7 of 10

Question 8 of 10

8. A canal which when fully developed yields enough revenue to cover up its running cost is known as _____________

protective canal

productive canal

permanent canal

inundation canal

Question 8 of 10

Question 9 of 10

9. Calculate the ratio of the tractive critical stress to the average shear stress if the water flows at a depth of 0.8 m in a wide stream having a bed slope of 1 in 3000. The median diameter of the sand bed is 2 mm.

0.53

1.86

0.86

1.53

Question 9 of 10

Question 10 of 10

10. What is Gross Cropped Area?

Total area irrigated once a year + area irrigated more than once in that year

Net irrigated area + Area irrigated more than once during the same year

Net irrigated area + Net cropped area

Net cropped area + Area sown more than once during the same year

Question 10 of 10