Heat Transfer Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is Uniformly distributed throughout the fluid In the central core of the fluid Mainly confined to a thin film of fluid near the surface None of these Uniformly distributed throughout the fluid In the central core of the fluid Mainly confined to a thin film of fluid near the surface None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer. the largest lower the least no the largest lower the least no ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is unimportant in forced convection ? Prandtl number Reynolds number Grashhoff number none of the listed here Prandtl number Reynolds number Grashhoff number none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. laminar highly turbulent None of the listed here transition laminar highly turbulent None of the listed here transition ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Decreases Increases exponentially Remains unchanged Increases Decreases Increases exponentially Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is More Some Less Either more or less ; depends on the nature of vapor More Some Less Either more or less ; depends on the nature of vapor ANSWER DOWNLOAD EXAMIANS APP
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