Heat Transfer 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient Factor of safety Non-dimensional factor None of these Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient Factor of safety Non-dimensional factor None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are Re.Gz Nu, Gz Nu, Pr Nu, Pr, Re Re.Gz Nu, Gz Nu, Pr Nu, Pr, Re ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the Evaporators operate under vacuum Solution has an elevation of boiling point Evaporators opreate at atmospheric pressure None of these Evaporators operate under vacuum Solution has an elevation of boiling point Evaporators opreate at atmospheric pressure None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient Is not affected May increase or decrease; depends on the feed Increases Decreases Is not affected May increase or decrease; depends on the feed Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for Low pressure drop Less corrosion of tubes High heat transfer co-efficient Large temperature differentials Low pressure drop Less corrosion of tubes High heat transfer co-efficient Large temperature differentials ANSWER DOWNLOAD EXAMIANS APP
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-1/3 NPr NPr-1 NPr1/3 NPr-1/3 NPr NPr-1 NPr1/3 ANSWER DOWNLOAD EXAMIANS APP
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