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Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of | |
A. | n = 0.4 is used for heating. [Wrong Answer] |
B. | n = 0.3 is used for cooling. [Wrong Answer] |
C. | Reynolds number for the flow involved is > 10000. [Wrong Answer] |
D. | Reynolds number for the flow involved is < 2100. [Correct Answer] |