If straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the area of its cross-section, is
Lacy's regime condition is obtained if
If average particle size of the silt in millimetres is m, the Lacey's silt factor f is proportional to
If the irrigation efficiency is 80%, conveyance losses areand the actual depth of watering iscm, the depth of water required at the canal outlet, is
The most suitable location of a canal head work, is
The down stream expansion head of a guide bank is extended to subtend an angle at the centre, equal to
A minimum ofcm free board is provided if the discharge in the canal is between
According to Bligh's creep theory, percolating water flows along
A hydraulic jump is generally formed when a stream moving with
In Montague type fall
In gravity canals, F.S.L. is
Lane's weighted creep theory assumes
For a unique design of a channel by Kennedy's theory
If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is
Meandering of a river generally occurs, in
Disposal of extra excavated earth of canals, is utilised to provide a spoil bank on
The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called
The consumptive use of water for a crop
If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then
Solution of Laplacian equation in three dimensions of water in a syphon, is done by
The difference in level between the top of a bank and supply level in a canal, is called
Pick up the correct sequence of the part of a canal system from the following
F.S.L. of a canal at its head with respect to parent channel is kept
Pick up the correct statement from the following
A counter berm is
According to Lacey, in regime conditions
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