Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low viscosity thermal conductivity Prandtl number Grashoff number viscosity thermal conductivity Prandtl number Grashoff number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Surface area to volume Perimeter to surface area Volume to surface area Surface area to perimeter Surface area to volume Perimeter to surface area Volume to surface area Surface area to perimeter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal boundary layer at NPr > 1 Is thicker than hydrodynamic boundary layer And the hydrodynamic boundary layer are identical Disappears Is thinner than hydrodynamic boundary layer Is thicker than hydrodynamic boundary layer And the hydrodynamic boundary layer are identical Disappears Is thinner than hydrodynamic boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body is called grey if the monochromatic emissivity of the body is Zero Same for all wavelengths Unity Different for all wavelengths Zero Same for all wavelengths Unity Different for all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Increasing temperature None of these Decreasing temperature Decreasing Reynolds number Increasing temperature None of these Decreasing temperature Decreasing Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The advantage of using a 1 - 2 shell and tube heat exchanger over a 1 - 1 shell and tube heat exchanger is Higher shell side heat transfer co-efficient Higher tube side heat transfer co-efficient Lower shell side pressure drop Lower tube side pressure drop Higher shell side heat transfer co-efficient Higher tube side heat transfer co-efficient Lower shell side pressure drop Lower tube side pressure drop ANSWER DOWNLOAD EXAMIANS APP
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