Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number) NPr NPr1/3 NPr-1 NPr-1/3 NPr NPr1/3 NPr-1 NPr-1/3 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. 1 to 100 100 to 1000 0.5 to 50 10 to 100 1 to 100 100 to 1000 0.5 to 50 10 to 100 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A BTU/hr.ft.2 °F is equal to 4.88 kcal/hr. m.2°C None of these 1 kcal/hr. m²°C 1 kcal/hr. m².°K 4.88 kcal/hr. m.2°C None of these 1 kcal/hr. m²°C 1 kcal/hr. m².°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have A porous structure Low thermal conductivity Less resistance to heat flow High thermal conductivity A porous structure Low thermal conductivity Less resistance to heat flow High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
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 > 0.6 < 0.5 < 0.1 0.5 > 0.6 < 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, one transfer unit means None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section Both A and B The size of the exchanger in which heat transfer rate is 1 kcal/hr None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section Both A and B The size of the exchanger in which heat transfer rate is 1 kcal/hr ANSWER DOWNLOAD EXAMIANS APP
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