Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Plate Cube Sphere All of these Plate Cube Sphere All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Natural convection is characterised by Grashhoff number Prandtl number Peclet number Reynolds number Grashhoff number Prandtl number Peclet number Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a supercooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is More Less Same More or less; depends on the nature of solution More Less Same More or less; depends on the nature of solution ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is >1 0 1 between 0 and 1 >1 0 1 between 0 and 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Vent pipes are provided in a condenser to None of these Remove non-condensable gases Facilitate easy cleaning of tubes Purge the condenser None of these Remove non-condensable gases Facilitate easy cleaning of tubes Purge the condenser ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is 894W/m².K 1200W/m².K 287 W/m².K 333W/m².K 894W/m².K 1200W/m².K 287 W/m².K 333W/m².K ANSWER DOWNLOAD EXAMIANS APP