Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is 0 1 >1 between 0 and 1 0 1 >1 between 0 and 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Perimeter to surface area Surface area to volume Volume to surface area Surface area to perimeter Perimeter to surface area Surface area to volume Volume to surface area Surface area to perimeter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would Decrease First decrease and then increase Increase First increase and then decrease Decrease First decrease and then increase Increase First increase and then decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law. Nature of the body None of these Wavelength of radiation Temperature of the body Nature of the body None of these Wavelength of radiation Temperature of the body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Removal of __________ heat is involved in the condensation of a vapor under saturated conditions. Super Both B & C Latent Sensible Super Both B & C Latent Sensible ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation occurs on __________ surfaces polished contaminated cooling clean and dirt free smooth clean polished contaminated cooling clean and dirt free smooth clean ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS