Heat and Mass Transfer The radiation emitted by a black body is known as Black radiation Full radiation All of these Total radiation Black radiation Full radiation All of these Total radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Absorptive power Emissive power Absorptivity Emissivity Absorptive power Emissive power Absorptivity Emissivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of water at 20°C is of the order of 0.23 0.1 0.51 0.42 0.23 0.1 0.51 0.42 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The unit of Stefan Boltzmann constant is watt/cm3 °K watt/cm4 °K watt2/cm °K⁴ watt/cm2 °K⁴ watt/cm3 °K watt/cm4 °K watt2/cm °K⁴ watt/cm2 °K⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following property of air does not increase with rise in temperature? Dynamic viscosity Thermal conductivity Thermal diffusivity Density Dynamic viscosity Thermal conductivity Thermal diffusivity Density ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of surface convection resistance to the internal conduction resistance is known as Stanton number Prandtl number Biot number Grashoff number Stanton number Prandtl number Biot number Grashoff number ANSWER DOWNLOAD EXAMIANS APP
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