Heat and Mass Transfer Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of 0.01 0.002 0.02 0.1 0.01 0.002 0.02 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Emissivity of a white polished body in comparison to a black body is Depends upon the shape of body Lower Higher Same Depends upon the shape of body Lower Higher Same ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The total emissivity power is .defined as the total amount of radiation emitted by a black body per unit Thickness Time Area Temperature Thickness Time Area Temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer LMTD in case of counter flow heat exchanger as compared to parallel flow heat exchanger is Depends on the area of heat exchanger Same Lower Higher Depends on the area of heat exchanger Same Lower Higher ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer All radiations in a black body are Transmitted Refracted Absorbed Reflected Transmitted Refracted Absorbed Reflected ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In regenerator type heat exchanger, heat transfer takes place by A complete separation between hot and cold fluids Flow of hot and cold fluids alternately over a surface Generation of heat again and again Direct mixing of hot and cold fluids A complete separation between hot and cold fluids Flow of hot and cold fluids alternately over a surface Generation of heat again and again Direct mixing of hot and cold fluids ANSWER DOWNLOAD EXAMIANS APP
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