Usually fins are provided to increases the rate of heat transfer, but – McqOptions

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1.	Usually fins are provided to increases the rate of heat transfer, but fins also act as insulation. Which one of the following non-dimensional numbers decides this factor?
A.	Eckert number
B.	Biot number
C.	Fourier number
D.	Peclet number
Answer» C. Fourier number

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