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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Q. Which of the following equations is true considering Chezy’s equation?

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Q. Which of the following equations is true considering Manning’s equation?

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Q. The slope of the energy line of a wide rectangular channel is 4×10⁻⁵ and the bed slope of the channel is 1 in 1200 using manning’s equation, calculate the depth in GVF if the uniform depth of flow is 1.5m.

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Q. The value of slope of energy line of a wide rectangular channel is 3×10⁻⁴ and the bed slope of the channel is 1 in 1500 using chezy’s equation, calculate the uniform flow depth if the depth during GVF is 2m.

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Q. If y = 2m and velocity of flow is 2.5m⁄s, calculate the critical depth.

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Q. Which of the following expressions is true?

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Q. Which of the following expressions is true?

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