For a given flow rate there are two possible channel depths that can occur at th

Question

For a given flow rate there are two possible channel depths that can occur at the same energy level, these are called ____ depths; additionally, two possible depths having identical specific force can occur on either side of a hydraulic jump, and these are known as ____ depths. (A) alternate and critical (B) conjugate and alternate (C) alternative and conjectural (D) alternate and conjugate (E) conjugate and critical At a particular location in an open rectangular channel the width is 3 m wide, the depth is 1.3 m and the velocity is 1.8 m/s (n = 0.013. S = 0.002). At this location, the flow is (A) subcritical (B) critical (C) supercritical (D) fast and deep (E) slow and shallow Nonuniform flow can be divided into gradually varied flow. i.e.. changing conditions that extend over short distances, and rapidly varied flow, i.e., changing conditions that take place abruptly over extended distances. (A) True (B) False What is the approximate rate of discharge for a 0.75 m high rectangular sharp-crested weir that extends across a 2.2 m wide rectangular channel when the head is 320 mm? Assume C_w = 1.83 and neglect the velocity of approach. (A) 2.6 m^3/s (B) 0.25 (C) 1.0m^3/s (D) 0.73 m^3/s (E) 1.9 m^3/s What is the flow rate for a triangular weir with an angle of 80 degree that carries a head of 0.955 m? The height of the weir above the channel bottom is 1.5 m and K = 1.2. (A) 0.26 m^3/s (B) 0.88 m^3/s (C) 1.1 m^3/s (D) 3.3 m^3/s (E) 1.7 m^3/s

Explanation / Answer

6.)

Alternate depth are depth at which specific energy is constant whereas in congugate depth specific force are constant .

critical depth at depth is which specific energy is minium not constant.

so ans is D

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