Heat Transfer The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law. Wien's displacement Stefan-Boltzman Planck's Kirchoffs Wien's displacement Stefan-Boltzman Planck's Kirchoffs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, square pitch compared to triangular pitch Gives a higher shell side pressure drop Gives a lower shell side pressure drop Can pack more surface area into a shell of given diameter None of these Gives a higher shell side pressure drop Gives a lower shell side pressure drop Can pack more surface area into a shell of given diameter None of these ANSWER DOWNLOAD EXAMIANS APP
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 temperature follows __________ law. Linear Hyperbolic Logarithmic Parabolic Linear Hyperbolic Logarithmic Parabolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube Exit-fluid temperature > wall temperature Exit fluid temperature = wall temperature Exit fluid temperature < wall temperature Graetz number > 100 Exit-fluid temperature > wall temperature Exit fluid temperature = wall temperature Exit fluid temperature < wall temperature Graetz number > 100 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For hot feed, forward feeding as compared to backward feeding results in __________ economy. None of these Increased Decreased No effect on None of these Increased Decreased No effect on ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynold's analogies are identical for Prandtl number value of 0.5 5 1 0.5 5 1 ANSWER DOWNLOAD EXAMIANS APP
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