Lumped heat transfer analysis of a solid object suddenly exposed to a fluid medium at a different temperature is valid when

Lumped heat transfer analysis of a solid object suddenly exposed to a

1.	Lumped heat transfer analysis of a solid object suddenly exposed to a fluid medium at a different temperature is valid when
A.	Biot number < 0.1
B.	Biot number > 0.1
C.	Fourier number < 0.1
D.	Fourier number > 0.1
Answer» B. Biot number > 0.1

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Lumped heat transfer analysis of a solid object suddenly exposed to a fluid medium at a different temperature is valid when

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