Heat Transfer Boiling point elevation of a solution of NaOH Both B and C Is almost independent of temperature Increases rapidly with temperature rise Is almost independent of pressure Both B and C Is almost independent of temperature Increases rapidly with temperature rise Is almost independent of pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m³ and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m².K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is 555 55.5 0.15 0.55 555 55.5 0.15 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Baffles are provided in heat exchangers to increase the Heat transfer co-efficient Heat transfer rate Heat transfer area Fouling factor Heat transfer co-efficient Heat transfer rate Heat transfer area Fouling factor ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of momentum diffusivity to thermal diffusivity is the __________ number. Nusselt Stanton Prandtl Grashoff Nusselt Stanton Prandtl Grashoff ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which has the lowest Prandtl number? Liquid metal Lube oil Aqueous solution Water Liquid metal Lube oil Aqueous solution Water 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 tempeature follows __________ law. Hyperbolic Linear Logarithmic Parabolic Hyperbolic Linear Logarithmic Parabolic ANSWER DOWNLOAD EXAMIANS APP
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