For a liquid in laminar flow through a very long tube, when the exit f – McqOptions

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1.	For a liquid in laminar flow through a very long tube, when the exit fluid temperatureapproaches the wall temperature, the equation to be used is
A.	Nu = 0.023 Re0.8. Pr0.4
B.	Nu = (π/2) Gz
C.	Nu = (2/π) Gz
D.	Nu = 2Gz0.5
Answer» D. Nu = 2Gz0.5

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