Heat Transfer MCQs

1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it

A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is

Planck's distribution law is valid for __________ bodies.

Corrosiveness of steam condensate is due to the presence of

An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

Small scale evaporation is done in a

The thickness of condensate layer in filmwise condensation depends on the

Intermittant tube cleaning is possible to be done in case of a __________ evaporator.