Heat Transfer For what value of Prandtl number, the Col-burn analogy is valid ? 0.6 to 120 l to 50 0.06 to 120 1 to 103 0.6 to 120 l to 50 0.06 to 120 1 to 103 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases Increases exponentially Decreases Remains unaffected Increases Increases exponentially Decreases Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a forward feed multiple effect, the pressure build up will be least at the outlet of the last effect least at the inlet of the first effect highest at the outlet of the last effect highest at the inlet of the last effect least at the outlet of the last effect least at the inlet of the first effect highest at the outlet of the last effect highest at the inlet of the last effect ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by None of these Eddies current Conduction Convection None of these Eddies current Conduction Convection ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 5 minutes 40 minutes 20 minutes 10 minutes 5 minutes 40 minutes 20 minutes 10 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. highly turbulent transition laminar None of the listed here highly turbulent transition laminar None of the listed here ANSWER DOWNLOAD EXAMIANS APP