Heat Transfer Prandtl number is the reciprocal of Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum Thermal diffusivity x Mass diffusivity Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum Thermal diffusivity x Mass diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient goes through a minimum continues to increase continues to decrease goes through a maximum. goes through a minimum continues to increase continues to decrease goes through a maximum. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which has the lowest Prandtl number? Water Lube oil Aqueous solution Liquid metal Water Lube oil Aqueous solution Liquid metal ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8. 20.4 40.4 40.8 20.8 20.4 40.4 40.8 20.8 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 55.5 555 0.15 0.55 55.5 555 0.15 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = h/k r = k/2h r = 2k/h r = k/h r = h/k r = k/2h r = 2k/h r = k/h ANSWER DOWNLOAD EXAMIANS APP
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