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Question
Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re^0.8 . Prⁿ, is not valid, if the value of
Options:
A .  n = 0.4 is used for heating.
B .  n = 0.3 is used for cooling.
C .  Reynolds number for the flow involved is > 10000.
D .  Reynolds number for the flow involved is < 2100.
Answer: Option D
Answer: (d).Reynolds number for the flow involved is < 2100.

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