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Calculate the total discharge through a rectangular channel having critical depth of 1.18m and the base width of the channel is 4m.
  • a)
    16 m3/s
  • b)
    20 m3/s
  • c)
    24 m3/s
  • d)
    28 m3/s
Correct answer is option 'A'. Can you explain this answer?
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Calculation of total discharge through a rectangular channel:

Given data:
- Critical depth (yc) = 1.18m
- Base width (b) = 4m

Formula for calculating the discharge through a rectangular channel:
Q = b * yc * sqrt(g * yc)

Calculations:
- g = 9.81 m/s^2 (acceleration due to gravity)
Q = 4m * 1.18m * sqrt(9.81 m/s^2 * 1.18m)
Q = 4 * 1.18 * sqrt(11.5618)
Q = 4 * 1.18 * 3.4
Q = 16 m^3/s
Therefore, the total discharge through the rectangular channel is 16 m^3/s. Hence, the correct answer is option 'A'.
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