Heat Transfer 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a None of these Non-dimensional factor Factor of safety Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient None of these Non-dimensional factor Factor of safety Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For hot feed, forward feeding as compared to backward feeding results in __________ economy. None of these No effect on Decreased Increased None of these No effect on Decreased Increased ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Conduction only Forced convection and conduction Free and forced convection Forced convection only Conduction only Forced convection and conduction Free and forced convection Forced convection only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be W/m None, A is just a number W/m.k² W/m.k W/m None, A is just a number W/m.k² W/m.k ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Remains unchanged Increases Decreases Increases exponentially Remains unchanged Increases Decreases Increases exponentially 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. Wien's displacement Kirchoffs Stefan-Boltzman Planck's Wien's displacement Kirchoffs Stefan-Boltzman Planck's ANSWER DOWNLOAD EXAMIANS APP
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