Heat Transfer Double pipe heat exchangers are preferably useful, when Overall heat transfer co-efficient is very high A corrosive liquid is to be heated Requirement of heat transfer area is low High viscosity liquid is to be cooled Overall heat transfer co-efficient is very high A corrosive liquid is to be heated Requirement of heat transfer area is low High viscosity liquid is to be cooled ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances. Sum Geometric mean Product Average Sum Geometric mean Product Average ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will Remain unchanged Decrease by 22 Increase by 1.8 times Increase by 216 Remain unchanged Decrease by 22 Increase by 1.8 times Increase by 216 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In SI units, fouling factor is expressed in m²°K/W m°K/W m²°K W/m²°K m²°K/W m°K/W m²°K W/m²°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 0.6 (COP)R = (COP)HP = 2.5 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 0.6 (COP)R = (COP)HP = 2.5 (COP)R = 1.5; (COP)HP = 2.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Leidenfrost point is a term concerned with the Condensation of the saturated vapor on a cold surface Concentration of a corrosive solution by evaporation Boiling of a liquid on a hot surface Heat transfer between two highly viscous liquids Condensation of the saturated vapor on a cold surface Concentration of a corrosive solution by evaporation Boiling of a liquid on a hot surface Heat transfer between two highly viscous liquids ANSWER DOWNLOAD EXAMIANS APP
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