Q. Water in which condition or state carry a maximum amount of sediment?

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Q. What minimum value of shear stress is needed to move the sediment?

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Q. Design a channel carrying a 30 cumecs. The median grain diameter is taken as 0.5 mm. The bedload concentration is 60 p.p.m by weight. Use Lacey’s Regime perimeter and Meyer-peter’s formulas.

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Q. The scouring and silting on the river banks raise the flood levels for the particular discharge.

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Q. The phenomenon of sediment transport increases maintenance work and sometimes leads to huge economic loss.

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Q. Which of the following statement is wrong?

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Q. BEAST Stands for _______________

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Q. The soil is assumed to be coherent in the study of the mechanism of sediment transport.

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Q. The basic mechanism behind the phenomenon of sediment transport is ______________

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Q. Which of the following statement is wrong?

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Q. For the bed of the canal, the average shear stress is equal to the tractive force per unit area.

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Q. A wide unlined channel carrying silt-free water has a depth of 2.0 m. The maximum slope that can be given to a channel is 1 in 10,000. Calculate the maximum tractive stress permissible on the bed to prevent scouring.

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Q. The water flows at a depth of 0.6 m in a wide stream having a bed slope of 1 in 2500. The critical tractive stress is 0.53 N/m². Determine the motion of soil grains and the average shear stress.

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Q. Whose equation was the first on the rate of bed load transport?

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Q. Which of the following statement is not correct about Einstein’s theory?

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Q. If the width of a river increases, the discharge per unit width will decrease and therefore, sediment carrying capacity will increase.

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Q. Which of the following statement is not correct about sediment load phenomenon and its measurement?

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Q. The sediment confined along and above the bed up to a depth ‘2d’ (d being grain size) is treated as bed load.

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Q. In a wide stream, a suspended load sample taken at a height of 0.30 m from the bed. The stream is 5.0 m deep and has a bed slope of 1/4000. The bed material can be of uniform size. Estimate the shear friction velocity.

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Q. For the usual turbulent flow, calculate the critical shear stress if the mean diameter of the grain particle of bed material is 0.3 mm.

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