Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Decreasing Reynolds number Decreasing temperature None of these Increasing temperature Decreasing Reynolds number Decreasing temperature None of these Increasing temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Film condensation is promoted on a/an __________ surface. clean & smooth dirty coated oily clean & smooth dirty coated oily ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which has the lowest Prandtl number? Lube oil Liquid metal Aqueous solution Water Lube oil Liquid metal Aqueous solution Water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Equal to that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Equal to that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Small scale evaporation is done in a Condenser Multiple effect evaporator Steam jacketed kettle Heat exchanger Condenser Multiple effect evaporator Steam jacketed kettle Heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger? Effective tube surface area for convective heat transfer All of these Tube side pressure drop and the heat transfer rate Convective heat transfer co-efficient Effective tube surface area for convective heat transfer All of these Tube side pressure drop and the heat transfer rate Convective heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
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