A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is

exposed to a fluid stream with a convective heat transfer coefficient of 100

W/m2

.K. The Biot number is

(A) 5.6

(B) 0.025

(C) 3.5

(D) 0.0035

1 Answer

Answer :

(B) 0.025

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