Heat and Mass Transfer Cork is a good insulator because it has Low density Free electrons Atoms colliding frequency Porous body Low density Free electrons Atoms colliding frequency Porous body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Unit of thermal conductivity in M.K.S. units is K calm/hr °C K cal m/hr m² °C K cal/hr m² °C K cal/kg m² °C K calm/hr °C K cal m/hr m² °C K cal/hr m² °C K cal/kg m² °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as None of these Convection Radiation Conduction None of these Convection Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer 40% of incident radiant energy on the surface of a thermally transparent body is reflected back. If the transmissivity of the body be 0.15, then the emissivity of surface is 0.55 0.4 0.75 0.45 0.55 0.4 0.75 0.45 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body Affect the intervening medium Move actually Do not move actually Does not affect the intervening medium Affect the intervening medium Move actually Do not move actually Does not affect the intervening medium ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wave length for maximum emissive power is given by Wine’s law Stefan’s law Planck’s law Kirchhoff’s law Wine’s law Stefan’s law Planck’s law Kirchhoff’s law ANSWER DOWNLOAD EXAMIANS APP
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