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)

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)

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Irrigation Engineering
A water-logged land is found suitable for cultivation due to

Ease of tillage for preparation of the field for optimum condition of germination

Absence of aeration of soil from root zone of the plant

Regular supply of water to plants from the water table by capillary action

None of these

Ease of tillage for preparation of the field for optimum condition of germination

Absence of aeration of soil from root zone of the plant

Regular supply of water to plants from the water table by capillary action

None of these

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Irrigation Engineering
In a barrage, the crest level is kept

High with large gates

High with no gates

Low with no gates

Low with large gates

High with large gates

High with no gates

Low with no gates

Low with large gates

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Irrigation Engineering
The measure to remove water logging of land, is

Neither (a) nor (b)

To increase outflow from the ground water reservoir

Both (a) and (b)

To reduce percolation from canals and water courses

Neither (a) nor (b)

To increase outflow from the ground water reservoir

Both (a) and (b)

To reduce percolation from canals and water courses

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Irrigation Engineering
To hold hydraulic jumps, baffle walls are provided in

Sarda type falls

Vertical type falls

Montague type falls

English type falls

Sarda type falls

Vertical type falls

Montague type falls

English type falls

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Irrigation Engineering
F.S.L. of a canal at its head with respect to parent channel is kept

15 cm higher

None of these

15 cm lower

At the same level

15 cm higher

None of these

15 cm lower

At the same level

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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 A water-logged land is found suitable for cultivation due to

Irrigation Engineering In a barrage, the crest level is kept

Irrigation Engineering The measure to remove water logging of land, is

Irrigation Engineering To hold hydraulic jumps, baffle walls are provided in

Irrigation Engineering F.S.L. of a canal at its head with respect to parent channel is kept

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
A water-logged land is found suitable for cultivation due to

Irrigation Engineering
In a barrage, the crest level is kept

Irrigation Engineering
The measure to remove water logging of land, is

Irrigation Engineering
To hold hydraulic jumps, baffle walls are provided in

Irrigation Engineering
F.S.L. of a canal at its head with respect to parent channel is kept