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Q. |
For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches 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» C. Nu = (2/π) Gz |
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