Heat and Mass Transfer The emissivity for a black body is 1 0.75 0.5 1 0.75 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Kirchhoff's law states that None of these The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body The total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature The wave length corresponding to the maximum energy is proportional to the absolute temperature None of these The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body The total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature The wave length corresponding to the maximum energy is proportional to the absolute temperature 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 Temperature gradient Thermal coefficient Thermal resistance Thermal conductivity Temperature gradient Thermal coefficient Thermal resistance Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer takes place as per Zeroth law of thermodynamics First law of thermodynamic Second law of the thermodynamics Kirchoff's law Zeroth law of thermodynamics First law of thermodynamic Second law of the thermodynamics Kirchoff's law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another by the actual motion of the heated particles, is called Conduction Convection Radiation None of these Conduction Convection Radiation None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour) Pb = pa/pv Pb = pa × pv Pb = pa - pv Pb = pa + pv Pb = pa/pv Pb = pa × pv Pb = pa - pv Pb = pa + pv ANSWER DOWNLOAD EXAMIANS APP
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