Heat Transfer Which of the following is directly concerned with the heat transfer? Strouhal number Grashoff number Euler number Sherwood number Strouhal number Grashoff number Euler number Sherwood number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Decrease in heat exchanger efficiency Its evaporation loss Uneconomic LMTD Excessive corrosion Decrease in heat exchanger efficiency Its evaporation loss Uneconomic LMTD Excessive corrosion ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film thickness for laminar film condensation on vertical surface __________ from top to bottom. Cummulatively increases Remains constant Cummulatively decreases And the surface conductance increase Cummulatively increases Remains constant Cummulatively decreases And the surface conductance increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Increasing the tube length Keeping the heat transfer surface clean Enhancing the fluid pumping rate None of these Increasing the tube length Keeping the heat transfer surface clean Enhancing the fluid pumping rate None of these 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 Constant temperature equal to that of the base Temperature of the fin end Surrounding temperature Average temperature of the fin Constant temperature equal to that of the base Temperature of the fin end Surrounding temperature Average temperature of the fin ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Both solids & liquids Gases Liquids Solids Both solids & liquids Gases Liquids Solids ANSWER DOWNLOAD EXAMIANS APP
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