A metal wire of 0 01 m dia and thermal conductivity...

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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

Answer: Option B

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