Heat Transfer Maximum heat transfer rate is obtained in __________ flow. Laminar Transition region Turbulent Creeping Laminar Transition region Turbulent Creeping 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 Less Some More Either more or less ; depends on the nature of vapor Less Some More Either more or less ; depends on the nature of vapor ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a backward feed multiple effect evaporator No pumps are required between successive effects Feed flows from low pressure to high pressure Feed is introduced in the first effect None of these No pumps are required between successive effects Feed flows from low pressure to high pressure Feed is introduced in the first effect None of these 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 55.5 0.15 555 0.55 55.5 0.15 555 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number (for forced convection heat transfer) is a function of the __________ number. Prandtl Both Reynolds & Prandtl None of the listed here Reynolds Prandtl Both Reynolds & Prandtl None of the listed here Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Grashoff number is defined as the ratio of the inertial to viscous forces. buoyancy to viscous forces buoyancy to inertial forces buoyancy to surface tension forces inertial to viscous forces. buoyancy to viscous forces buoyancy to inertial forces buoyancy to surface tension forces ANSWER DOWNLOAD EXAMIANS APP
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