Heat Transfer Nusselt number is the ratio of the temperature gradient at the wall to Temperature difference Heat flux None of these That across the entire pipe Temperature difference Heat flux None of these That across the entire pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the unit of thermal conductivity ? Kcal/hr.m Kcal/hr.m.°C Kcal/hr. m² °C Kcal/hr. °C Kcal/hr.m Kcal/hr.m.°C Kcal/hr. m² °C Kcal/hr. °C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) h0/K h0/2K K/h0 2K/h0 h0/K h0/2K K/h0 2K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity under thermal equilibrium none of the listed here for circular bodies at a particular temperature under thermal equilibrium none of the listed here for circular bodies at a particular temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.95 0.78 1 0.95 0.78 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Water is normally used as a coolant in the heat exchange equipments mainly because ofits Low density Low viscosity High fluidity Abundance & high heat capacity Low density Low viscosity High fluidity Abundance & high heat capacity ANSWER DOWNLOAD EXAMIANS APP
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