Film coefficient is defined as – McqOptions

MCQOPTIONS

1.	Film coefficient is defined as
A.	\(\frac{{{\rm{Inside\;diameter\;of\;the\;tube}}}}{{{\rm{equivalent\;thickness\;of\;the\;film}}}}\)
B.	\(\frac{{{\rm{specific\;heat\;}} \times {\rm{\;viscosity}}}}{{{\rm{thermal\;conductivity}}}}\)
C.	\(\frac{{{\rm{thermal\;conductivity}}}}{{{\rm{equivalent\;thickness\;of\;the\;film}}}}\)
D.	\(\frac{{{\rm{molecular\;diffusivity\;or\;momentum}}}}{{{\rm{thermal\;diffusivity}}}}\)
Answer» D. \(\frac{{{\rm{molecular\;diffusivity\;or\;momentum}}}}{{{\rm{thermal\;diffusivity}}}}\)

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