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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Q. The total quantity of water flowing through the capillary tube is given by _________

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Q. The total quantity of water with respect to the hydraulic gradient flowing through the capillary tube is given by _________

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Q. The average velocity of the tube of area a is given by _________

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Q. The hydraulic radius RH is the ratio of the area of the tube to its volume.

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Q. The hydraulic radius RH of circular tube is given by ________

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Q. The hydraulic radius RH is related with the voids ratio as ________

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Q. The quantity of flow for circular tube with respect to the hydraulic radius is given by ________

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Q. The relationship between the quantity of flow with respect to the hydraulic radius and the voids ratio is given by ________

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Q. Based on Allen Hazen experiments, permeability can be expressed as ___________

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Q. Which of the following factors affects the permeability of soil?

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Q. Physical permeability of a soil KP is related to the coefficient of permeability by the equation ___________

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