Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Decreases Increases Remains unchanged Increases or decreases depending on number of shell passes Decreases Increases Remains unchanged Increases or decreases depending on number of shell passes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In SI units, thermal conductivity is expressed in Watt/m². °K Watt/m.°K Watt/m4. °K Watt/m². °K Watt/m². °K Watt/m.°K Watt/m4. °K Watt/m². °K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Constant temperature gradient exists 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 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have Low thermal conductivity High thermal conductivity Less resistance to heat flow A porous structure Low thermal conductivity High thermal conductivity Less resistance to heat flow A porous structure 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 tempeature follows __________ law. Parabolic Logarithmic Linear Hyperbolic Parabolic Logarithmic Linear Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is 894W/m².K 287 W/m².K 333W/m².K 1200W/m².K 894W/m².K 287 W/m².K 333W/m².K 1200W/m².K ANSWER DOWNLOAD EXAMIANS APP
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