The absorptivity of a body is equal to its emissivity _________________?

Related Mcqs:

Tube pitch is the _______________ of tube diameters and the clearances?

A. Sum B. Difference C. Ratio D. None of these...

Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

A. Prandtl B. Reynolds C. Both A. & B. D. Neither A. nor B....

In case of evaporators, liquid entrainment results primarily due to_________________?

A. High vacuum in the evaporator B. High evaporation rate C. Foaming of the solution D. High heat transfer rate...

Steady state one dimensional heat flow by conduction as given by Fourier’s low does not assume that_______________?

A. There is no internal heat generation B. Boundary surfaces are isothermal C. Material is anisotropic D. Constant temperature gradient exists...

Steam is to be condensed in a shell and tube heat exchanger, 5 m long with a shell diameter of 1 m. Cooling water is to be used for removing the heat. Heat transfer co-efficient for the cooling water, whether on shell side or tube side is the same. The best arrangement is_____________?

A. Vertical heat exchanger with steam on tube side B. Vertical heat exchanger with steam on shell side C. Horizontal heat exchanger with steam on tube side D. Horizontal heat exchanger with steam on shell side...