Civil Engineering :: Irrigation
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Borrow pits should preferably be located in
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Irrigation canals are generally aligned along
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The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of
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If B and d are the bed width and depth of a channel in metres, the combined losses due to evaporation and seepage in cumecs per kilometre length of the channel, is
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Pick up the incorrect statement from the following
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The difference in level between the top of a bank and supply level in a canal, is called
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F.S.L. of a canal at its head with respect to parent channel is kept
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The measure to remove water logging of land, is
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Attracting groynes are built
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Retrogression of the bed level of a river downstream a weir, occurs due to
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A.
Side walls of a venturi head flume are splayed out from the end of the throat at 1 : 10 for a length of 4.5 m |
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B.
Length of side walls should be such that the width of the flume is made equal to 2/3rd the bed width of the distributary |
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C.
Once the width of the flume becomes 2/3rd of the width of the distributary, the splayed walls are increased to 1 in 3 to get full bed width |
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D.
None of these. |