Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.1 < 0.5 0.5 > 0.6 < 0.1 < 0.5 0.5 > 0.6 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 Radiation energy is emitted by all the substances, which are above 0°K none of the listed here 100°C 0°C 0°K none of the listed here 100°C 0°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the most suitable for cold viscous feed? Backward feed Mixed feed Parallel feed Forward feed Backward feed Mixed feed Parallel feed Forward feed ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Decreases Increases Remains constant Passes through a maxima Decreases Increases Remains constant Passes through a maxima ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very low film co-efficient none of the listed here high temperature high pressure low film co-efficient none of the listed here high temperature high pressure ANSWER DOWNLOAD EXAMIANS APP