Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Decreases Increases May increase or decrease ; depends on the material Remains constant Decreases Increases May increase or decrease ; depends on the material Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer __________ paint has the minimum absorption co-efficient. White lead Light cream Black Grey White lead Light cream Black Grey ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Low thermal conductivity of heat insulating materials is due to its High proportion of air space Dense structure High specific heat None of these High proportion of air space Dense structure High specific heat None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 5-50 0.38-0.78 0.5-50 100-1000 5-50 0.38-0.78 0.5-50 100-1000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer jH factor for heat transfer depends upon the __________ number. Reynolds Biot Nusselt Prandtl Reynolds Biot Nusselt Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators. Vacuum pump Compressor Entrainment separator Steam ejector Vacuum pump Compressor Entrainment separator Steam ejector ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS