Engineering Board Exam Reviewer · Fluid Mechanics · medium

Using the Francis formula Q = 1.84 L H3/2 (SI), what is the discharge over a suppressed rectangular weir 2 m long under a head of 0.3 m?

  1. 0.1814 m3/s
  2. 0.6047 m3/s
  3. 1.1040 m3/s
  4. 0.3023 m3/s

Answer

B. 0.6047 m3/s

Solution

Q = 1.84(2)(0.3)1.5 = 0.6047 m3/s.

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