Heat Transfer Multipass heat exchangers are used Because of simplicity of fabrication For low heat load To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop Because of simplicity of fabrication For low heat load To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop 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 Hyperbolic Logarithmic Linear Parabolic Hyperbolic Logarithmic Linear ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is 0.0035 0.025 3.5 5.6 0.0035 0.025 3.5 5.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers of a fluid flowing over a heated plate will be identical? > 1 None of these 1 < 1 > 1 None of these 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. 10 to 100 1 to 100 100 to 1000 0.5 to 50 10 to 100 1 to 100 100 to 1000 0.5 to 50 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is 16.5 kW/m² 14.6 kW/m² 11.2 kW/m² 12.0 kW/m² 16.5 kW/m² 14.6 kW/m² 11.2 kW/m² 12.0 kW/m² ANSWER DOWNLOAD EXAMIANS APP
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