Heat and Mass Transfer Kirchhoff's law states that 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 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 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is Equal to one Equal to Nusselt number Less than one Greater than one Equal to one Equal to Nusselt number Less than one Greater than one ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fouling factor is used In heat exchanger design as a safety factor When a liquid exchanges heat with a gas None of these In case of Newtonian fluids In heat exchanger design as a safety factor When a liquid exchanges heat with a gas None of these In case of Newtonian fluids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Temperature of steam at around 540°C can be measured by Thermistor Thermocouple None of these Thermometer Thermistor Thermocouple None of these Thermometer ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The automobile radiator is a heat exchanger of Parallel flow type Counter flow type Regenerator type Cross flow type Parallel flow type Counter flow type Regenerator type Cross flow type ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of wood depends on Temperature Density Moisture All of these Temperature Density Moisture All of these ANSWER DOWNLOAD EXAMIANS APP
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