Combined natural and forced convection analysis is done only when (Gr – McqOptions

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1.	Combined natural and forced convection analysis is done only when (Gr = Grashof number and Re = Reynold number)
A.	\(0.1 < \frac{{{G_r}}}{{R_e^4}} < 10\)
B.	\(0.1 < \frac{{{G_r}}}{{R_e^3}} < 10\)
C.	\(0.1 < \frac{{{G_r}}}{{R_e^2}} < 10\)
D.	\(0.1 < \frac{{{G_r}}}{{{R_e}}} < 10\)
Answer» D. \(0.1 < \frac{{{G_r}}}{{{R_e}}} < 10\)

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