Heat and Mass Transfer According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to Square of temperature Fourth power of absolute temperature Absolute temperature Fourth power of temperature Square of temperature Fourth power of absolute temperature Absolute temperature Fourth power of temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called Newton's law of cooling First law of thermodynamics Newton's law of heating Stefan's law Newton's law of cooling First law of thermodynamics Newton's law of heating Stefan's law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The most commonly used method for the design of duct size is the Static regains method Velocity reduction method Dual or double method Equal friction method Static regains method Velocity reduction method Dual or double method Equal friction method ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Depending on the radiating properties, body will be transparent when(Where a = absorptivity, p = reflectivity, x = transmissivity) X = 0, a + p = 1 P = 0, x = 0 and a = 1 P = 0, x= 1, and a = 0 P=1, x = 0, and a = 0 X = 0, a + p = 1 P = 0, x = 0 and a = 1 P = 0, x= 1, and a = 0 P=1, x = 0, and a = 0 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Prevost theory of heat exchange All bodies above absolute zero emit radiation It is impossible to transfer heat from low temperature source to t high temperature source Heat transfer in most of the cases takes place by combination of conduction, convection and radiation Heat transfer by radiation requires no medium All bodies above absolute zero emit radiation It is impossible to transfer heat from low temperature source to t high temperature source Heat transfer in most of the cases takes place by combination of conduction, convection and radiation Heat transfer by radiation requires no medium ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Joule sec is the unit of Kinematic viscosity Universal gas constant Thermal conductivity Planck's constant Kinematic viscosity Universal gas constant Thermal conductivity Planck's constant ANSWER DOWNLOAD EXAMIANS APP
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