For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is

A directly proportional to Reynolds number and independent of pipe wall roughness
B directly proportional to pipe wall roughness and independent of Reynolds number
C inversely proportional to Reynolds number and indpendent of pipe wall roughness
D inversely proportional to Reynolds number and directly proportional to pipe wall roughness

Correct Answer: inversely proportional to Reynolds number and indpendent of pipe wall roughness

Bissoy MCQ
#Civil Engineering #Hydraulics And Fluid Mechanics

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