Civil Engineering :: Water Resources Engineering
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The run off a drainage basin is
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For computing the run off volumes of large areas, number of infiltrations used are
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From the Survey of India map, the distance of the critical point is 20 km and difference in elevation is 193 m. The over land flow time, is
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If the area of storm hydrograph is equal to 102 cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by
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If s is the potential infiltration, P is rainfall in cm in a drainage of a soil with fair pasture cover, the direct run off Q in cm is given by
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If the potential infiltration of a water shed having a soil with fair pasture cover, is 10 cm and rainfall is 12 cm, the direct run off is :
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The quantity of water retained by the sub-soil against gravity, is known
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Pick up the incorrect statement from the following :
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With the usual meanings ofletters, the equation
is used for determining the velocity of ground water flow in metres per day. It is known as -
If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in acquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is
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A.
The rate of flow of water through a unit cross-sectional area under a unit hydraulic gradient, is called coefficient of permeability
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B.
The rate of flow of water through a vertical strip of the acquifer of unit width and full depth under a unit hydraulic gradient, is called coefficient of transmissibility
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C.
The flow of water through acquifers, is governed by the Darcy's law
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D.
The term 'transmissibility' was introduced by Meinzer
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E.
The ratio of coefficient of transmissibility and coefficient of permeability, is equal to the depth of acquifer through which water flows.
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