Refrigeration and Air Conditioning A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be 4.33 2.33 1.33 3.33 4.33 2.33 1.33 3.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases, Will remain unaffected May be higher or lower depending upon the nature of non-condensable gases Will be higher Will be lower Will remain unaffected May be higher or lower depending upon the nature of non-condensable gases Will be higher Will be lower ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Bell Coleman cycle is a Reversed Carnot cycle Reversed Rankine cycle Reversed Joule cycle Reversed Otto cycle Reversed Carnot cycle Reversed Rankine cycle Reversed Joule cycle Reversed Otto cycle ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The specific humidity during humidification process Remains constant Decreases None of these Increases Remains constant Decreases None of these Increases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since It gives higher coefficient of performance It is miscible with oil over large range of temperatures It has low operating pressures All of these It gives higher coefficient of performance It is miscible with oil over large range of temperatures It has low operating pressures All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be Cooling and dehumidification Dehumidification Dehumidification and pure sensible cooling Cooling and humidification Cooling and dehumidification Dehumidification Dehumidification and pure sensible cooling Cooling and humidification ANSWER DOWNLOAD EXAMIANS APP
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