Heat Transfer In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of Concentrations Mass transfer co-efficients Activity co-efficients Chemical potentials Concentrations Mass transfer co-efficients Activity co-efficients Chemical potentials ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz Nu = Gz Nu = 2Gz0.5 Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz Nu = Gz Nu = 2Gz0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? Liquid viscosity Hot surface temperature Liquid density Interfacial tension Liquid viscosity Hot surface temperature Liquid density Interfacial tension ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. Remains constant May increase or decrease, depends on the vacuum Increases Decreases Remains constant May increase or decrease, depends on the vacuum Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Grashoff number is defined as the ratio of the inertial to viscous forces. buoyancy to inertial forces buoyancy to surface tension forces buoyancy to viscous forces inertial to viscous forces. buoyancy to inertial forces buoyancy to surface tension forces buoyancy to viscous forces 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 Either more or less ; depends on the nature of vapor Less Some More Either more or less ; depends on the nature of vapor Less Some ANSWER DOWNLOAD EXAMIANS APP
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