Heat and Mass Transfer Thermal conductivity of water _________ with rise in temperature. May increase or decrease depending upon temperature Increases Remain same Decreases May increase or decrease depending upon temperature Increases Remain same Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the Absolute temperature Fourth power of the absolute temperature Cube of the absolute temperature Square of the absolute temperature Absolute temperature Fourth power of the absolute temperature Cube of the absolute temperature Square of the absolute temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A grey body is one whose absorptivity Is equal to its emissivity Does not vary with temperature and. wavelength of the incident ray Varies with wavelength of the incident ray Varies with temperature Is equal to its emissivity Does not vary with temperature and. wavelength of the incident ray Varies with wavelength of the incident ray Varies with temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of surface convection resistance to the internal conduction resistance is known as Prandtl number Grashoff number Biot number Stanton number Prandtl number Grashoff number Biot number Stanton number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Metals are good conductors of heat because They contain free electrons Their atoms collide frequently Their atoms are relatively far apart They have high density They contain free electrons Their atoms collide frequently Their atoms are relatively far apart They have high density ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends on All of these Type of surface of body Nature of body Temperature of body All of these Type of surface of body Nature of body Temperature of body ANSWER DOWNLOAD EXAMIANS APP
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