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A Rectangular Channel will give the Maximum Discharge if

By BYJU'S Exam Prep

Updated on: September 25th, 2023

A rectangular channel will give the maximum discharge if

  1. Depth is twice the breadth
  2. Breadth is twice the depth
  3. Depth is thrice the breadth
  4. Breadth is thrice the depth

Answer: B. Breadth is twice the depth

A rectangular channel will give maximum discharge if its breadth is twice the depth .

Solution

A rectangular channel will give the maximum discharge if (Most economical section):

  1. y = B/2
  2. A = 2y2
  3. P = 4y
  4. R = y/2
  5. T = 2y
  6. D = y

Where,

y  = Depth

B = Breadth

A = Area

P = Perimeter

T = Top width

D = Hydraulic depth 

Hence, a rectangular channel will give the maximum discharge if breadth is twice the depth.

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