Heat Transfer Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the Average of all resistances Minimum resistance presents in the series Sum of all resistances Maximum resistance in the series Average of all resistances Minimum resistance presents in the series Sum of all resistances Maximum resistance in the series ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law. Kirchoffs Wien's displacement Planck's Stefan-Boltzman Kirchoffs Wien's displacement Planck's Stefan-Boltzman ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient continues to increase goes through a minimum goes through a maximum. continues to decrease continues to increase goes through a minimum goes through a maximum. continues to decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of a gas Remains same Increases May increase or decrease depending on the type of gas Decreases Remains same Increases May increase or decrease depending on the type of gas Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Geometric mean temperature difference Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Geometric mean temperature difference Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K ANSWER DOWNLOAD EXAMIANS APP
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