Question

Fanning friction factor for laminar flow of fluid in a circular pipe is

a.

not a function of the roughness of pipe wall.

b.

inversely proportional to Reynolds number.

c.

both (a) & (b).

d.

neither (a) nor (b).

Answer: (c).both (a) & (b).

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Q. Fanning friction factor for laminar flow of fluid in a circular pipe is

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