Heat and Mass Transfer Thermal conductivity of non-metallic amorphous solids with decrease in temperature May increase or decrease depending on temperature Decreases Increases Remain constant May increase or decrease depending on temperature Decreases Increases Remain constant ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a Brilliant white polished body Black body Red hot body Grey body Brilliant white polished body Black body Red hot body Grey body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour) Pb = pa + pv Pb = pa/pv Pb = pa - pv Pb = pa × pv Pb = pa + pv Pb = pa/pv Pb = pa - pv Pb = pa × pv ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as Convection Radiation None of these Conduction Convection Radiation None of these Conduction 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 Does not affect the intervening medium Move actually Affect the intervening medium Do not move actually Does not affect the intervening medium Move actually Affect the intervening medium Do not move actually 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 0.45 0.55 0.75 0.4 0.45 0.55 0.75 0.4 ANSWER DOWNLOAD EXAMIANS APP
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