Q. On which factor does the movement of bedload depends?

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Q. Commonly the bed load is 10% of total suspended load.

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Q. What type of force is completely responsible for the bedload movement?

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Q. Which type of force is needed for suspension of suspended load in flowing water?

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Q. A part of tractive force does not have any part in transporting the bed material, i. e bed load.

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Q. Given that the bed slope of a channel is 1 in 2000 and the discharge is 60 cumecs. The depth of the channel is fixed and is given as 2 m. The tractive force needed for the movement of bedload is? Take critical velocity ratio as 1.1.

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Q. What cause is prime responsible for the heavy movement of water from main canal to branch canal?

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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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