Refrigeration and Air Conditioning One of the purposes of sub cooling the liquid refrigerant is to 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 Reduce compressor discharge temperature Ensure that only liquid and not the vapour enters the expansion (throttling) valve Increase cooling effect ANSWER DOWNLOAD EXAMIANS APP
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 3.33 2.33 4.33 1.33 3.33 2.33 4.33 1.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant decreases increases remains same depends on other factors decreases increases remains same depends on other factors ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The freezing point of R-12 is -95.2°C -107.7°C -135.8°C -86.6°C -95.2°C -107.7°C -135.8°C -86.6°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following cycles uses air as the refrigerant? Bell Coleman Stirling Carnot Ericson Bell Coleman Stirling Carnot Ericson ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively Water and water Water and lithium bromide Ammonia and water Ammonia and lithium bromide Water and water Water and lithium bromide Ammonia and water Ammonia and lithium bromide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS