Heat transfer co-efficient equation for forced convection, Nu = 0.023 R e 0.8 . P r n , is not valid, if the value of Options: A . &nbspn = 0.4 is used for heating. B . &nbspn = 0.3 is used for cooling. C . &nbspReynolds number for the flow involved is > 10000. D . &nbspReynolds number for the flow involved is

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Heat transfer co-efficient equation for forced convection, Nu = 0.023 R_e^0.8 . P_rⁿ, 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

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