Heat and Mass Transfer Thermal conductivity of non-metallic amorphous solids with decrease in temperature Decreases Increases Remain constant May increase or decrease depending on temperature Decreases Increases Remain constant May increase or decrease depending on temperature 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 Grey body Red hot body Brilliant white polished body Black body Grey body Red hot body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Total heat is the heat required to Change liquid into vapour Convert water into steam and superheat it Increase the temperature of a liquid or vapour Change vapour into liquid Change liquid into vapour Convert water into steam and superheat it Increase the temperature of a liquid or vapour Change vapour into liquid ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat is closely related with Energy Temperature Entropy Liquids Energy Temperature Entropy Liquids 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 rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as Emissivity Intensity of radiation Transmissivity Reflectivity Emissivity Intensity of radiation Transmissivity Reflectivity ANSWER DOWNLOAD EXAMIANS APP
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