Heat and Mass Transfer A grey body is one whose absorptivity Varies with temperature Varies with wavelength of the incident ray Is equal to its emissivity Does not vary with temperature and. wavelength of the incident ray Varies with temperature Varies with wavelength of the incident ray Is equal to its emissivity Does not vary with temperature and. wavelength of the incident ray ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The insulation ability of an insulator with the presence of moisture would Remain unaffected May increase/decrease depending on temperature and thickness of insulation Increase Decrease Remain unaffected May increase/decrease depending on temperature and thickness of insulation Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat conducted through per unit area and unit thick face per unit time when temperature difference between opposite faces is unity, is called Thermal coefficient Thermal resistance Thermal conductivity Temperature gradient Thermal coefficient Thermal resistance Thermal conductivity Temperature gradient ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A steam pipe is to be lined with two layers of insulating materials of different thermal conductivities. For the minimum heat transfer, The better insulation must be put outside One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put inside One could place either insulation on either side The better insulation must be put outside One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put inside One could place either insulation on either side ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of heat flow through a body by conduction is Dependent upon the material of the body Directly proportional to the temperature difference on the two faces of the body All of these Directly proportional to the surface area of the body Dependent upon the material of the body Directly proportional to the temperature difference on the two faces of the body All of these Directly proportional to the surface area of the body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is smallest in None of these Solids Gases Liquids None of these Solids Gases Liquids ANSWER DOWNLOAD EXAMIANS APP
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