

MCQOPTIONS
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1. |
Freezer is at -18 °C. Will will be Radiative heat transfer if meat is at 298k, its emissivity is 0.82 and average area is 0.045m².Either use Stefan Boltzmann law or take hᵣ (radiative heat transfer co-efficient) as 0.227.ε = ( Tₐᵥ/100 )³ |
A. | 7.61 |
B. | 6.94 |
C. | 8.43 |
D. | None of the mentioned |
Answer» B. 6.94 | |