Heat Transfer If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law. Parabolic Linear Logarithmic Hyperbolic Parabolic Linear Logarithmic Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when CPA < CPB CPA > CPB KA>2 kB KA < 0.5kB CPA < CPB CPA > CPB KA>2 kB KA < 0.5kB ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is < 1 > 5 > 1 1 < 1 > 5 > 1 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) Δt³ √Δt Δt² Δt Δt³ √Δt Δt² Δt ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Temperature profile in steady state heat transfer is hyperbolic Linear none of the listed here parabolic hyperbolic Linear none of the listed here parabolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour None of the listed here is desirable to increase the film co-efficient increases the rate of condensation decreases thermal resistance None of the listed here is desirable to increase the film co-efficient increases the rate of condensation decreases thermal resistance ANSWER DOWNLOAD EXAMIANS APP
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