Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 0 and 0.5 1 and ? 0 and 1 1 and 0 0 and 0.5 1 and ? 0 and 1 1 and 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Black Silver Air Water Black Silver Air Water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiator of an automobile engine is a __________ type of heat exchanger. Counter-current Cross-current Direct contact Co-current Counter-current Cross-current Direct contact Co-current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum thermal conductivity? Tar Steel Carbon black Nitrogen Tar Steel Carbon black Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both B & C Both will absorb equal amount of radiation from the surrounding in the beginning Both the spheres will emit equal amount of radiation per unit time in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both B & C Both will absorb equal amount of radiation from the surrounding in the beginning Both the spheres will emit equal amount of radiation per unit time in the beginning ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (Cp . μ)/K is termed as the __________ number. Nusselt Prandtl Stanton Grashoff Nusselt Prandtl Stanton Grashoff ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS