Heat Transfer Which of the following is directly concerned with the heat transfer? Grashoff number Euler number Strouhal number Sherwood number Grashoff number Euler number Strouhal number Sherwood number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In natural convection heat transfer, the correlating parameter is the Bond number Eckert number Grashoff number Graetz number Bond number Eckert number Grashoff number Graetz number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the Surrounding temperature Temperature of the fin end Average temperature of the fin Constant temperature equal to that of the base Surrounding temperature Temperature of the fin end Average temperature of the fin Constant temperature equal to that of the base ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the temperature gradient at the wall to None of these That across the entire pipe Heat flux Temperature difference None of these That across the entire pipe Heat flux Temperature difference 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 0.15 55.5 0.55 555 0.15 55.5 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nucleate boiling is promoted On rough surfaces On polished surfaces None of these In the absence of agitation On rough surfaces On polished surfaces None of these In the absence of agitation ANSWER DOWNLOAD EXAMIANS APP
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