List of top Water Resources Engineering Questions on Channel Hydraulics asked in GATE CE

Width (in m) of a rectangular channel required to carry a discharge of 96 m3/s at a critical depth of 9.8 m is (rounded off to two decimal places).

Use acceleration due to gravity = 9.8 m/s2
The flow depth for a discharge of 10 m3/s in a wide rectangular channel is 2.0 m. Assume that the flow is uniform.

If the discharge is doubled, the flow depth (in m) in this channel is (rounded off to two decimal places).
A wide unlined channel carries sediment-free water. The depth of water is 1 m. The specific weight of water is 10 kN/m\(^3\). To prevent scouring, the maximum permissible tractive stress on bed is 10 N/m\(^2\). The maximum slope of the channel bed to prevent scouring is 1 in \(n\). The value of \(n\) is (in integer).
A 2 m wide rectangular channel is carrying a discharge of 30 m3/s at a bed slope of 1 in 300. Assuming the energy correction factor as 1.1 and acceleration due to gravity as 10 m/s2, the critical depth of flow (in meters) is ________ (rounded off to 2 decimal places).
A standard round bottom triangular canal section as shown in the figure has a bed slope of 1 in 200. Consider the Chezy's coefficient as 150 m1/2/s.
A standard round bottom triangular canal section
The normal depth of flow, y (in meters) for carrying a discharge of 20 m3/s is ______ (rounded off to 2 decimal places).
Depth of water flowing in a 3 m wide rectangular channel is 2 m. The channel carries a discharge of 12 m\(^3\)/s. Take \( g = 9.8 \, \text{m/s}^2 \). The bed width (in m) at contraction, which just causes the critical flow, is \(\underline{\hspace{1cm}}\) without changing the upstream water level. (round off to two decimal places)
A rectangular channel with Gradually Varied Flow (GVF) has a changing bed slope. If the change is from a steeper slope to a steep slope, the resulting GVF profile is
If water is flowing at the same depth in most hydraulically efficient triangular and rectangular channel sections then the ratio of hydraulic radius of triangular section to that of rectangular section is
A rectangular open channel of 6 m width is carrying a discharge of 20 m³/s. Consider the acceleration due to gravity as 9.81 m/s² and assume water as incompressible and inviscid. The depth of flow in the channel at which the specific energy of the flowing water is minimum for the given discharge will then be