Heat and Mass Transfer Absorptivity of a body will be equal to its emissivity At critical temperature When system is under thermal equilibrium At all temperatures At one particular temperature At critical temperature When system is under thermal equilibrium At all temperatures At one particular temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of 270 9 3 81 270 9 3 81 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The energy distribution of an ideal reflector at higher temperatures is largely in the range of Shorter wavelength Wavelength has nothing to do with it Longer wavelength Remain same at all wavelengths Shorter wavelength Wavelength has nothing to do with it Longer wavelength Remain same at all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body Move actually Do not move actually Affect the intervening medium Does not affect the intervening medium Move actually Do not move actually Affect the intervening medium Does not affect the intervening medium ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In heat transfer, conductance equals conductivity (kcal/hr/sq.m/°C/cm) divided by Hr (time) K.cal (heat) °C (temperature) Sq. m (area) Hr (time) K.cal (heat) °C (temperature) Sq. m (area) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is the case of heat transfer by radiation? Blast furnace Cooling of parts in furnace Heat received by a person from fireplace Heating of building Blast furnace Cooling of parts in furnace Heat received by a person from fireplace Heating of building ANSWER DOWNLOAD EXAMIANS APP
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