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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Q. Calculate the corresponding hydraulic mean depth that would exist in the channel if the bed was unrippled. The rugosity coefficient in an unrippled channel is 0.015 and the rugosity coefficient actually observed by experiments on the rippled bed of channel is 0.020. Consider the value of hydraulic mean depth of the channel as 1.5 m.

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Q. Calculate the quantity of bed load transport by using Meyer and Peter formula if the effective tractive force that causes bed load transportation is 2.5 N/m².

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Q. Calculate the effective unit tractive force that causes bed load transportation if the unit tractive force produced by the flowing water is 3.20 N/m². The Manning’s coefficient on an unrippled bed is 0.0108 and the actual observed value of Manning’s coefficient on ripped channels is 0.0222. Take the value of critical shear stress that is required to move the grain particle as 0.5 N/m².

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Q. The actual capacity of silt laiden water channel is worked out with 1/2 : 1 side slopes.

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Q. What is range of side slopes for a canal in cutting?

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Q. With what equation we can calculate the berm width?

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Q. Deposition of silt to form the berms completely has lot of advantages.

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Q. What is the primary purpose of the banks?

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Q. What type of roads is provided for inspection purposes?

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Q. What is provided as a measure of safety during driving?

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Q. Which structure is provided when the disposition of earth becomes costlier?

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