Heat Transfer Heat transfer in the laminar sublayer in case of a liquid flowing through a pipe, is mostly by Eddies current Convection Conduction None of these Eddies current Convection Conduction None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires More space Less heating surface Lower maintenance cost None of these More space Less heating surface Lower maintenance cost None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp All of these Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hot body will radiate heat most rapidly, if its surface is Black & rough White & rough White & polished Black & polished Black & rough White & rough White & polished Black & polished ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With the increase of temperature, the Col-burn jH factor Remains unchanged Increases Decreases May increase or decrease ; depending on temperature Remains unchanged Increases Decreases May increase or decrease ; depending on temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Choose the most important factor on which the heat conducted through a wall in a unit time will depend on? Thickness of the wall Area of the wall perpendicular to heat flow Temperature difference between the two surfaces of the wall Material of the wall Thickness of the wall Area of the wall perpendicular to heat flow Temperature difference between the two surfaces of the wall Material of the wall ANSWER DOWNLOAD EXAMIANS APP
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