Heat and Mass Transfer Unit of thermal conductivity in S.I. units is W/m °K J/m °K sec J/m² sec Option (B) and (C) above W/m °K J/m °K sec J/m² sec Option (B) and (C) above 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 0.75 0.55 0.45 0.4 0.75 0.55 0.45 0.4 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of energy transferred by convection to that by conduction is called Nusselt number Peclet number Biot number Stanton number Nusselt number Peclet number Biot number Stanton number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The most commonly used method for the design of duct size is the Dual or double method Static regains method Equal friction method Velocity reduction method Dual or double method Static regains method Equal friction method Velocity reduction method ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The energy distribution of an ideal reflector at higher temperatures is largely in the range of Wavelength has nothing to do with it Longer wavelength Shorter wavelength Remain same at all wavelengths Wavelength has nothing to do with it Longer wavelength Shorter wavelength Remain same at all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Emissivity of a white polished body in comparison to a black body is Higher Depends upon the shape of body Lower Same Higher Depends upon the shape of body Lower Same ANSWER DOWNLOAD EXAMIANS APP
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