Refrigeration and Air Conditioning One of the purposes of sub cooling the liquid refrigerant is to Reduce compressor overheating Ensure that only liquid and not the vapour enters the expansion (throttling) valve Increase cooling effect Reduce compressor discharge temperature Reduce compressor overheating Ensure that only liquid and not the vapour enters the expansion (throttling) valve Increase cooling effect Reduce compressor discharge temperature ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and Sulphur dioxide Carbon dioxide R-12 Lithium bromide Sulphur dioxide Carbon dioxide R-12 Lithium bromide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant decreases depends on other factors remains same increases decreases depends on other factors remains same increases ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to Red Yellow Orange Bright green Red Yellow Orange Bright green 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 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 Will remain unaffected 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 5.12 1.25 2.15 1 5.12 1.25 2.15 1 ANSWER DOWNLOAD EXAMIANS APP
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