Heat Transfer What is the unit of thermal conductivity ? Kcal/hr. °C Kcal/hr.m Kcal/hr. m² °C Kcal/hr.m.°C Kcal/hr. °C Kcal/hr.m Kcal/hr. m² °C Kcal/hr.m.°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal boundary layer at NPr > 1 Disappears Is thinner than hydrodynamic boundary layer And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer Disappears Is thinner than hydrodynamic boundary layer And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers are identical? 0.5 1 80 1.5 0.5 1 80 1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In forced convection, the Nusselt number is a function of Pr and Gr Re and Gr Re and Pr Re and Sc Pr and Gr Re and Gr Re and Pr Re and Sc ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Leidenfrost point is a term concerned with the Concentration of a corrosive solution by evaporation Boiling of a liquid on a hot surface Heat transfer between two highly viscous liquids Condensation of the saturated vapor on a cold surface Concentration of a corrosive solution by evaporation Boiling of a liquid on a hot surface Heat transfer between two highly viscous liquids Condensation of the saturated vapor on a cold surface 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, Both will absorb equal amount of radiation from the surrounding 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 the spheres will emit equal amount of radiation per unit time in the beginning Both will absorb equal amount of radiation from the surrounding 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 the spheres will emit equal amount of radiation per unit time in the beginning ANSWER DOWNLOAD EXAMIANS APP
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