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If H is the height of water over the crest then the discharge over a rectangular notch is directly proportional to -
  • a)
    H
  • b)
    H1/2
  • c)
    H3/2
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If H is the height of water over the crest then the discharge over a r...
Weir or notch
It is a physical structure of masonry constructed across the channel width to calculate the discharge of the channel section.
Rectangular Notch

The discharge through a rectangular notch weir is,

Where, Q = discharge of fluid, Cd = Coefficient of discharge, and H = height of water above the notch
Triangular Notch:

A V-notch weir is also called the triangular notch or weir. The discharge over a triangular weir or notch is given by the:

Where, Q = discharge of fluid, Cd = Coefficient of discharge, θ = Notch angle, and H = height of water above the notch
Trapezoidal weir (or) Notch


Where, (θ/2) = weir angle of inclination with the vertical.
  = Coefficient of discharge for rectangular portion.
 = Coefficient of discharge for the triangular portion.
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If H is the height of water over the crest then the discharge over a rectangular notch is directly proportional to -a)Hb)H1/2c)H3/2d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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