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At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.
The flow enters as an M-3 profile in the long wide rectangular channel with bed slope = 1/1800 and Manning’s n = 0.A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s2. Just before the hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________
    Correct answer is '0.417'. Can you explain this answer?
    Verified Answer
    At the foot of a spillyway, water flows at a depth of 23 cm with a vel...
    Given data:
    y = 0.23 m
    V = 8.1 m/sec.
    Slope, s = 1/1800
    h = 0.015
    g = 9.81 m/sec2
    q = yV = 8.1 × 0.23
    = 1.863 m3/sec/m
    It is given that flow enters as an M-3 profile in the long wide rectangular channel with bed slope = 1/1800
    From manning equation at M3 profile section.

    [for wide channel R = y]

    The flow profile will follow normal depth (yn) after jump.
    For wide rectangular channel,


    Here, yn = y2 = 1.11 m


    ⇒ y1 = 0.417 m < yc [supercritical]
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    At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.The flow enters as an M-3 profile in the long wide rectangular channel with bedslope = 1/1800and Manning’s n = 0.A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s2. Just before the hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________Correct answer is '0.417'. Can you explain this answer?
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    At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.The flow enters as an M-3 profile in the long wide rectangular channel with bedslope = 1/1800and Manning’s n = 0.A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s2. Just before the hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________Correct answer is '0.417'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.The flow enters as an M-3 profile in the long wide rectangular channel with bedslope = 1/1800and Manning’s n = 0.A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s2. Just before the hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________Correct answer is '0.417'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for At the foot of a spillyway, water flows at a depth of 23 cm with a velocity of 8.1 m/s, as shown in the figure.The flow enters as an M-3 profile in the long wide rectangular channel with bedslope = 1/1800and Manning’s n = 0.A hydraulic jump is formed at a certain distance from the foot of the spillway. Assume the acceleration due to gravity, g = 9.81 m/s2. Just before the hydraulic jump, the depth of flow y1 (in m, round off to 2 decimal places) is _________Correct answer is '0.417'. Can you explain this answer?.
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