Radiation heat transfer rates does not depend upon the_________________?

Related Mcqs:

Pick out the wrong statement ?

A. Heat transfer from a hot body to cold body by the emission of heat waves is called radiation B. Filmwise condensation takes place on non-wettable surfaces C. The boiling point of a solution is affected by liquid head as well as boiling point elevation D. None of these...

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because___________________?

A. Convection becomes important B. Conduction becomes important C. Radiation becomes important D. Sub-cooled boiling occurs...

The equation, Nst = (f/2)/[1 + 5 (Npr – 1) √(f/2)], corresponds to ______________ analogy?

A. Von-Karman B. Reynolds C. Colburn D. Prandtl...

What is the emissivity of a black body ?

A. 0 B. 1 C. 0.5 D. 0.90...

The heat transfer co-efficient in film type condensation is _______________ that for dropwise condensation?

A. Greater than B. Lower than C. Is same as D. Half...