The sum of reflectivity and absorptivity for an opaque body is equal to____________________?

Related Mcqs:

Cpμ/K is termed as the ______________ number?

A. Grashoff B. Nusselt C. Prandtl D. Stanton...

LMTD for counter-flow and parallel flow heat exchanger will be the same, when the_________________?

A. Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid) B. Outlet temperature of both the hot and cold fluid are same C. Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid D. None of these...

Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) ?

A. t4 B. T4 C. 1/t4 D. 1/T4...

Economy of a multiple effect evaporator depends upon the _____________________?

A. Heat balance consideration B. Rate of heat transfer C. Both A. and B. D. Neither A. nor B....

The separation of liquid droplets from the vapor is done by a/an _____________ in the evaporators?

A. Steam ejector B. Entrainment separator C. Compressor D. Vacuum pump...