Heat Transfer The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8. 20.8 20.4 40.4 40.8 20.8 20.4 40.4 40.8 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 temperature follows __________ law. Logarithmic Parabolic Linear Hyperbolic Logarithmic Parabolic Linear Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is between 0 and 1 >1 1 0 between 0 and 1 >1 1 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In pipe flow, heat is transferred from hot wall to the liquid by Free and forced convection Forced convection only Conduction only Forced convection and conduction Free and forced convection Forced convection only Conduction only Forced convection and conduction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. May increase or decrease; depends on the liquid Increases Remains unchanged Decreases May increase or decrease; depends on the liquid Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal boundary layer at NPr > 1 And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer Disappears Is thinner than hydrodynamic boundary layer And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer Disappears Is thinner than hydrodynamic boundary layer ANSWER DOWNLOAD EXAMIANS APP
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