Heat and Mass Transfer According to Stefan's law, the total radiation from a black body per second per unit area is proportional to Absolute temperature T5 T T2 Absolute temperature T5 T T2 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Conduction is a process of heat transfer From one particle of the body to another by the actual motion of the heated particles None of these From a hot body to a cold body, in a straight line, without affecting the intervening medium From one particle of the body to another without the actual motion of the particles From one particle of the body to another by the actual motion of the heated particles None of these From a hot body to a cold body, in a straight line, without affecting the intervening medium From one particle of the body to another without the actual motion of the particles ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a heat exchanger with one fluid evaporating or condensing, the surface area required is least in Parallel flow Counter flow Cross flow All of these Parallel flow Counter flow Cross flow All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Stefan Boltzmann law is applicable for heat transfer by Conduction and radiation combined Radiation Conduction Convection Conduction and radiation combined Radiation Conduction Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Stefan Boltzmann law, ideal radiators emit radiant energy at a rate proportional to Square of temperature Absolute temperature Fourth power of temperature Fourth power of absolute temperature Square of temperature Absolute temperature Fourth power of temperature Fourth power of absolute temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be Two One Four Three Two One Four Three ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS