Heat Transfer The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are Nu, Pr Nu, Pr, Re Re.Gz Nu, Gz Nu, Pr Nu, Pr, Re Re.Gz Nu, Gz ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for 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 Low pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Fourier's law, the proportionality constant is called the Stefan-Boltzman constant Thermal conductivity Thermal diffusivity Heat transfer co-efficient Stefan-Boltzman constant Thermal conductivity Thermal diffusivity Heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is 120.36 4.36 Dependent on NRe only 2.36 120.36 4.36 Dependent on NRe only 2.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Material is anisotropic Boundary surfaces are isothermal There is no internal heat generation Constant temperature gradient exists Material is anisotropic Boundary surfaces are isothermal There is no internal heat generation Constant temperature gradient exists ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film ) ΔT None of the listed here (ΔT)2 (ΔT)1/4 ΔT None of the listed here (ΔT)2 (ΔT)1/4 ANSWER DOWNLOAD EXAMIANS APP
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