Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that There is no internal heat generation Constant temperature gradient exists Boundary surfaces are isothermal Material is anisotropic There is no internal heat generation Constant temperature gradient exists Boundary surfaces are isothermal Material is anisotropic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha = 0.8hL Ha = 2hL Ha= 5hL Ha = hL Ha = 0.8hL Ha = 2hL Ha= 5hL Ha = hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The actual temperature drop across the heating surface of an evaporator depends on the Liquid depth over the heating surface Solution being evaporated Pressure difference between the steam chest and the vapor space above the boiling liquid All of these Liquid depth over the heating surface Solution being evaporated Pressure difference between the steam chest and the vapor space above the boiling liquid All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Double pipe heat exchangers are used when heat transfer area required is very high because it is less costly because it occupies less floor area when heat transfer area required is very low when heat transfer area required is very high because it is less costly because it occupies less floor area when heat transfer area required is very low ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation of steam on cooling surface is promoted When both the steam and the tube are clean None of these Only in presence of air An oily surface When both the steam and the tube are clean None of these Only in presence of air An oily surface 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 > 1 > 5 1 < 1 > 1 > 5 1 ANSWER DOWNLOAD EXAMIANS APP
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