Refrigeration and Air Conditioning A vapour absorption refrigerator uses _________ as a refrigerant. Freon Ammonia Water Aqua-ammonia Freon Ammonia Water Aqua-ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since All of these It has low operating pressures It gives higher coefficient of performance It is miscible with oil over large range of temperatures All of these It has low operating pressures It gives higher coefficient of performance It is miscible with oil over large range of temperatures ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The dehumidification process, on the psychrometric chart, is shown by Vertical line Horizontal line Curved line Inclined line Vertical line Horizontal line Curved line Inclined line 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, May be higher or lower depending upon the nature of non-condensable gases Will remain unaffected Will be higher Will be lower May be higher or lower depending upon the nature of non-condensable gases Will remain unaffected Will be higher Will be lower ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Superheating in a refrigeration cycle Increases C.O.P Other factors decide C.O.P Decreases C.O.P O.P remains unaltered Increases C.O.P Other factors decide C.O.P Decreases C.O.P O.P remains unaltered ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is Actual COP/theoretical COP None of these Actual COP × theoretical COP Theoretical COP/actual COP Actual COP/theoretical COP None of these Actual COP × theoretical COP Theoretical COP/actual COP ANSWER DOWNLOAD EXAMIANS APP
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