Q. The coefficient of permeability of clean gravel is _________

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Q. The unit coefficient of permeability is ______

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Q. If the discharge velocity is 4*10¯⁷cm/s and the porosity is 33%, then the seepage velocity will be _______

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Q. If the soil has discharge velocity is 9*10¯⁷cm/s and the voids ratio of 0.5, then the seepage velocity will be _______

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Q. The velocity of flow is proportional to _________ according to Darcy’s law.

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Q. The relationship between coefficient of permeability and coefficient of percolation is ______

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Q. If the coefficient of permeability of soil is 9*10¯⁷cm/s and porosity is 0.33, then its coefficient of percolation is ______

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Q. If the coefficient of percolation is 18*10¯⁷cm/s and void ratio is 0.5, then the coefficient of permeability k is _________

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Q. The coefficient of permeability is equal to velocity of flow when _________

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Q. Darcy’s law of linear dependency is valid for only _______ flow conditions in soil.

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Q. For Darcy’s law to be valid, the Reynolds number should be ________

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Q. For flow through soils, the characteristic length in Reynolds number is taken as ________

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Q. Darcy’s law in some cases is not valid in ______

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Q. The critical Reynolds number varies from ________ for validity of Darcy’s law.

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Q. The linear dependency between velocity of flow and hydraulic gradient exists if effective size of soil _______

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Q. The drainage property of silty clay is ________

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Q. For flow of water in tube, the velocity at surface is ___________

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Q. In Poiseuille’s law of flow, the variation of the velocity is given by _______

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Q. The velocity of flow of water at the centre of tube is _______ when the head is 0.1m, η=8.9*10¯³ dynes-s/cm², γw=1 g/cm³, the length is 10m and the diameter is 20cm.

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Q. The quantity of water flowing in thin cylindrical sheet of thickness dr is ____________

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