Heat Transfer Which of the following has the highest thermal conductivity ? Air Black Silver Water Air Black Silver Water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, one transfer unit means None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section The size of the exchanger in which heat transfer rate is 1 kcal/hr Both A and B None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section The size of the exchanger in which heat transfer rate is 1 kcal/hr Both A and B 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 Its evaporation loss Excessive corrosion Decrease in heat exchanger efficiency Uneconomic LMTD Its evaporation loss Excessive corrosion Decrease in heat exchanger efficiency Uneconomic LMTD ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used In high range of temperature differences In low range of temperature differences Because of its low cost To prevent corrosion of the tube bundles In high range of temperature differences In low range of temperature differences Because of its low cost To prevent corrosion of the tube bundles ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Leidenfrost point is a term concerned with the Concentration of a corrosive solution by evaporation Condensation of the saturated vapor on a cold surface Heat transfer between two highly viscous liquids Boiling of a liquid on a hot surface Concentration of a corrosive solution by evaporation Condensation of the saturated vapor on a cold surface Heat transfer between two highly viscous liquids Boiling of a liquid on a hot surface ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used To obtain higher heat transfer co-efficient and shorter tube For low heat load To reduce the pressure drop Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube For low heat load To reduce the pressure drop Because of simplicity of fabrication ANSWER DOWNLOAD EXAMIANS APP
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