An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to a convecti

Question

An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to a convective flow resulting in convection coefficient of 11.5 W/m² K. Determine the Biot number

Options:

A . 0.02376

B . 0.008974

C . 0.004563

D . 0.006846

Answer: Option D
Answer: (d).0.006846

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