For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe – McqOptions

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1.	For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by
A.	Di, opt = 3 Q0.36 ρ0.18
B.	Di, opt = 3.9 Q0.45 . ρ0.23
C.	Di, opt = 7.6 Q0.36 . ρ0.9
D.	Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Answer» B. Di, opt = 3.9 Q0.45 . ρ0.23

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