Refrigeration and Air Conditioning In a domestic vapour compression refrigerator, the refrigerant commonly used is All of these CO? R-12 Ammonia All of these CO? R-12 Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During heating and dehumidification process, dry bulb temperature Increases Remains constant Decreases None of these Increases Remains constant Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with ozone layer These react with oxygen and cause its depletion These react with water vapour and cause acid rain These react with plants and cause greenhouse effect These react with ozone layer ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The material of pipe lines for a system using Freon as a refrigerant should be Copper Steel Aluminium Brass Copper Steel Aluminium Brass ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leakage in a refrigeration system using Freon is detected by All of these Sulphur sticks Soap and water Halide torch All of these Sulphur sticks Soap and water Halide torch ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Operating the machine at higher speeds Lowering the higher temperature Operating the machine at lower speeds Raising the higher temperature Operating the machine at higher speeds Lowering the higher temperature Operating the machine at lower speeds Raising the higher temperature ANSWER DOWNLOAD EXAMIANS APP
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