Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Increases Remains unchanged Decreases May increase or decrease; depends on the gas Increases Remains unchanged Decreases May increase or decrease; depends on the gas ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Coal dust Refractory bricks Aluminium foil Iron plates Coal dust Refractory bricks Aluminium foil Iron plates 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 5.6 3.5 0.025 0.0035 5.6 3.5 0.025 0.0035 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When warm and cold liquids are mixed, the heat transfer is mainly by convection none of the listed here conduction radiation convection none of the listed here conduction radiation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe whose surface temperature remains constant is 1.66 3.66 Dependent on NRe only 88.66 1.66 3.66 Dependent on NRe only 88.66 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With the increase of temperature, the Col-burn jH factor Increases May increase or decrease ; depending on temperature Remains unchanged Decreases Increases May increase or decrease ; depending on temperature Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
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