Refrigeration and Air Conditioning The refrigerant for a refrigerator should have High total heat Low latent heat High latent heat High sensible heat High total heat Low latent heat High latent heat High sensible heat ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Critical pressure of a liquid is the pressure Above which liquid becomes vapour Above which liquid will remain liquid Above which liquid becomes gas Above which liquid becomes solid Above which liquid becomes vapour Above which liquid will remain liquid Above which liquid becomes gas Above which liquid becomes solid ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be 2 kW 3 kW 1 kW 4 kW 2 kW 3 kW 1 kW 4 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a refrigeration cycle, the flow of refrigerant is controlled by Evaporator Compressor Condenser Expansion valve Evaporator Compressor Condenser Expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning One of the purposes of sub cooling the liquid refrigerant is to Reduce compressor discharge temperature Ensure that only liquid and not the vapour enters the expansion (throttling) valve Increase cooling effect Reduce compressor overheating Reduce compressor discharge temperature Ensure that only liquid and not the vapour enters the expansion (throttling) valve Increase cooling effect Reduce compressor overheating 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
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