Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 100-1000 5-50 0.38-0.78 0.5-50 100-1000 5-50 0.38-0.78 0.5-50 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Remains same Increases Decreases Decreases linearly Remains same Increases Decreases Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid? Catchall Bleed point Vent Baffle Catchall Bleed point Vent Baffle ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In which mode of heat transfer, the Biot number is important? Natural convection Radiation Forced convection Transient heat conduction Natural convection Radiation Forced convection Transient heat conduction 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 0.15 0.55 55.5 555 0.15 0.55 55.5 555 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 More or less; depends on the nature of solution Less Same More More or less; depends on the nature of solution Less Same ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS