Engineering Board Exam Reviewer · Fluid Mechanics · medium

What pipe diameter is needed to carry 50 L/s of water at a velocity of 2.5 m/s?

  1. 79.8 mm
  2. 20.0 mm
  3. 159.6 mm
  4. 25.5 mm

Answer

C. 159.6 mm

Solution

A = Q/V = 0.05/2.5 = 0.02 m2; D = sqrt(4A/π ) = 0.1596 m = 159.6 mm.

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