Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.1 0.5 < 0.5 > 0.6 < 0.1 0.5 < 0.5 > 0.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor) f 2f f/2 f/4 f 2f f/2 f/4 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 10 minutes 20 minutes 40 minutes 5 minutes 10 minutes 20 minutes 40 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids? Sieder-Tate equation None of these Dittus-Boeltier equation Nusselt equation Sieder-Tate equation None of these Dittus-Boeltier equation Nusselt equation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If Prandtl number is greater than the Schmidt number, then the thermal boundary layer lies inside the concentration boundary layer thermal & concentration boundary layers are of equal thickness none of the listed here concentration boundary layer lies inside the thermal boundary layer thermal boundary layer lies inside the concentration boundary layer thermal & concentration boundary layers are of equal thickness none of the listed here concentration boundary layer lies inside the thermal boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity at a particular temperature for circular bodies under thermal equilibrium none of the listed here at a particular temperature for circular bodies under thermal equilibrium none of the listed here ANSWER DOWNLOAD EXAMIANS APP
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