Q. Estimate the slope of energy line in a GVF having length of the back water curve 30000m and head loss of 1m.

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Q. Determine the length of the back water curve if E₁=2.8m and E₂=5.6m. Given:S₀=0.00009, Sf= 0.00004.

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Q. If the difference between specific energies is 2m calculate the rate of change of specific energies if the length of the back water curve is 26314m.

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Q. Calculate the bed slope of the channel if the slope of the energy line 0.00024 and the length of the back water curve is 104166.67m. Given:E₁-E₂=3m.

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Q. If the depths in a channel are 2m and 4m and the velocities are 0.5 m/s and 0.3m/s, calculate the difference between specific energies.

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Q. Calculate the slope of the energy line if the bed slope of the channel is 4.81×10⁻⁵ if the depths of the channel are 2.7m and 4.7m and velocities are 1 m/s and 0.5m/s respectively.

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Q. The dimensions of a rectangular channel is 3m×2m and the bed slope of the channel is 1 in 1000, calculate the rate of change of depth if the rate of change of specific energy is 2×10⁻⁵m. Given: n = 0.010

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Q. Specific energy in GVF changes only under which of the following conditions.

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Q. The channel is prismatic in case of a GVF.

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Q. Calculate the value of frictional slope for a rectangular channel having width 5m and depth 3m. Given:V=2 m/s and n = 0.012.

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Q. Calculate the frictional slope of a triangular channel having depth 2.5m and side slope of 1H:2V, if the rate of change of specific energy is 1.6×10⁻⁵m/s. Given:V=1.57 m/s

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Q. What happens to the depth of flow when there is an obstruction in the path?

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Q. Calculate the value of Froude’s number if the ratio of rate of change of specific energy and rate of change of depth is 0.9.

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Q. Which of the following assumptions is true in case of GVF?

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Q. The ratio of bed slope and the slope of energy line is 2, calculate the value of slope of energy line if the length of back water curve is 20000m. Given: E₁=2m and E₂=5m.

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Q. The depth and widths of a trapezoidal channel section are 2m and 4m respectively and the side slope of 1H:5V. Calculate the rate of change of depth if the rate of change of specific energy is 1.5×10⁻⁵. Given: S₀=1 in 1000,C=35.

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Q. Calculate the head loss in a channel if the length of the back water curve is 30000m and the slope of the energy line is 4×10⁻⁴.

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Q. What is the hydraulic radius for a wide rectangular channel section?

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Q. Which of the following equations is true for a wide rectangular channel?

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Q. Calculate the rate of change of depth of a wide rectangular channel having uniform flow depth of 2m and the depth during GVF is 1.5m. Given:yc=1m, S₀=1 in 1500.

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