Refrigeration and Air Conditioning The human body feels comfortable when the heat stored in the body is None of these Zero Negative Positive None of these Zero Negative Positive ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerant with the highest critical pressure is R-12 Ammonia R-11 R-22 R-12 Ammonia R-11 R-22 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since It is miscible with oil over large range of temperatures All of these It has low operating pressures It gives higher coefficient of performance It is miscible with oil over large range of temperatures All of these It has low operating pressures It gives higher coefficient of performance ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Allowable pressure on high pressure side or ammonia absorption system is of the order of 24 bars 56 bars Atmospheric pressure Slightly above atmospheric pressure 24 bars 56 bars Atmospheric pressure Slightly above atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During a refrigeration cycle, heat is rejected by the refrigerant in a Compressor Evaporator Expansion valve Condenser Compressor Evaporator Expansion valve Condenser ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with water vapour and cause acid rain These react with ozone layer These react with oxygen and cause its depletion These react with plants and cause greenhouse effect These react with water vapour and cause acid rain These react with ozone layer These react with oxygen and cause its depletion These react with plants and cause greenhouse effect ANSWER DOWNLOAD EXAMIANS APP
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