Irrigation Engineering Mock Test 2

10%

Question 1 of 10

1. The cropped area in Rabi season is usually increased.

False

True

Question 1 of 10

Question 2 of 10

2. The manning’s coefficient for a lined trapezoidal channel with a bed slope of 1 in 4000 is 0.014 and it will be 0.028 if the channel is unlined. The area in the case of the lined section is 19.04 m² and for the unlined section is 29.09 m². What percentage of earthwork is saved in a lined section relative to an unlined section, when a hydraulically efficient section is used in both the cases?

50%

37.66%

34.55%

24.44 %

Question 2 of 10

Question 3 of 10

3. Determine the volume of water stored in unit area if unit weight of water is 9.8 KN/m³, dry unit of soil is 17 KN/m³, field capacity (F) is 2.35 m², and depth of root zone of the plant is 9 m.

36.25m³

36 m³

36.69 m³

36.12 m³

Question 3 of 10

Question 4 of 10

4. What is the effect of silting in channels?

Reduced Discharge Capacity of Channel

Causes Loss of Command

Failure of Irrigation Structures

Breaching of Canal Banks

Question 4 of 10

Question 5 of 10

5. Which type of force is needed for suspension of suspended load in flowing water?

Gravity Force

Capillary Force

Drag Force

Forces of Turbulence

Question 5 of 10

Question 6 of 10

6. Which of the following statement is wrong?

Ripples are less rounded than Dunes

Dunes are much larger in length and height than ripples

Ripples do not occur if the size of the bed particles is coarser than 0.6 mm

Crests of both ripples and dunes extend across the entire width of the stream

Question 6 of 10

Question 7 of 10

7. In the case of canals and natural streams, anti-dunes rarely occur.

True

False

Question 7 of 10

Question 8 of 10

8. If a looping is present in the ridge line they how can that area be irrigated with?

Tributary

Distributary

Weir

Canal

Question 8 of 10

Question 9 of 10

9. What is the correct expression of parameter E_a in Penman’s equation?

E_a = 0.35 (1 - V₂/160) (e_s - e_a)

E_a = 0.35 (1 + V₂/160) (e_s - e_a)

E_a = 0.35 (1 - V₂/160) (e_s + e_a)

E_a = 0.35 (1 + V₂/160) (e_s + e_a)

Question 9 of 10

Question 10 of 10

10. At low velocity, the bed does not move at all but as velocity increases, it goes on assuming different shapes.

False

True

Question 10 of 10