Refrigeration and Air Conditioning The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner. Less Same More None of these Less Same More None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a refrigeration system, heat absorbed in comparison to heat rejected is Less Same More for small capacity and less for high capacity More Less Same More for small capacity and less for high capacity More ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 125 kJ/kg 25 kJ/kg 100 kJ/kg 50 kJ/kg 125 kJ/kg 25 kJ/kg 100 kJ/kg 50 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about 1 2.15 1.25 5.12 1 2.15 1.25 5.12 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is equal to None of these (Actual C.O.P.) × (Theoretical C.O.P.) (Actual C.O.P.) /(Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) None of these (Actual C.O.P.) × (Theoretical C.O.P.) (Actual C.O.P.) /(Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a pressure enthalpy chart, the space to the left of the saturated liquid line represents Wet vapour region Superheated vapour region Sub-cooled liquid region None of the listed here Wet vapour region Superheated vapour region Sub-cooled liquid region None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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