Heat Transfer The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the Solution has an elevation of boiling point None of these Evaporators operate under vacuum Evaporators opreate at atmospheric pressure Solution has an elevation of boiling point None of these Evaporators operate under vacuum Evaporators opreate at atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is Less More Some Either more or less ; depends on the nature of vapor Less More Some Either more or less ; depends on the nature of vapor ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Film boiling is usually not desired in commercial equipments, because none of the listed here it is not economic it is difficult to maintain the heat transfer rate is low in view of the large temperature drop. @ none of the listed here it is not economic it is difficult to maintain the heat transfer rate is low in view of the large temperature drop. @ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling. film pool transition none of the listed here film pool transition none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 120 to 400 0.001 to 1 0.5 to 5 0.6 to 120 120 to 400 0.001 to 1 0.5 to 5 0.6 to 120 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 Increase by 1.8 times Remain unchanged Increase by 216 Decrease by 22 Increase by 1.8 times Remain unchanged Increase by 216 Decrease by 22 ANSWER DOWNLOAD EXAMIANS APP
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