If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

Irrigation Engineering
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

t = (h + 1)/G

t = (h + 1)/(G + t)

t = (h - 1)/(G + t)

t = (h - 1)/(G - t)

t = (h + 1)/G

t = (h + 1)/(G + t)

t = (h - 1)/(G + t)

t = (h - 1)/(G - t)

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Irrigation Engineering
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is

D/5

D

D/3

D/2

D/5

D

D/3

D/2

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Irrigation Engineering
The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

11RS

4RS

15 RS

7RS

11RS

4RS

15 RS

7RS

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Irrigation Engineering
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

35 m3/sec

25 m3/sec

30 m3/sec

20 m3/sec

35 m3/sec

25 m3/sec

30 m3/sec

20 m3/sec

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Irrigation Engineering
Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?

canal escape

canal outlet

canal fall

canal regulator

canal escape

canal outlet

canal fall

canal regulator

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Irrigation Engineering
Effective precipitation for a crop may be defined as

Total precipitation minus the loss due to infiltration

Available water stored in soil within root zone of the crop

Total precipitation during the crop period

Total precipitation minus the loss due to evaporation

Total precipitation minus the loss due to infiltration

Available water stored in soil within root zone of the crop

Total precipitation during the crop period

Total precipitation minus the loss due to evaporation

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Irrigation Engineering

Irrigation Engineering If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

Irrigation Engineering If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is

Irrigation Engineering The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

Irrigation Engineering The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

Irrigation Engineering Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?

Irrigation Engineering Effective precipitation for a crop may be defined as

Irrigation Engineering
If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor downstream of the crest-wall, is given by the equation

Irrigation Engineering
If the straight sides of a triangular section of a lined canal with circular bottom of radius D, make an angle ? with horizontal, the hydraulic mean depth is

Irrigation Engineering
The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by

Irrigation Engineering
The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be

Irrigation Engineering
Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?

Irrigation Engineering
Effective precipitation for a crop may be defined as