Refrigeration and Air Conditioning In a refrigeration cycle, the flow of refrigerant is controlled by Compressor Condenser Evaporator Expansion valve Compressor Condenser Evaporator Expansion valve 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 2.33 1.33 3.33 4.33 2.33 1.33 3.33 4.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning While designing the refrigeration system of an aircraft, the prime consideration is that the Power per TR is low Mass of the refrigeration equipment is low System has high C.O.P. Mass of refrigerant circulated in the system is low Power per TR is low Mass of the refrigeration equipment is low System has high C.O.P. Mass of refrigerant circulated in the system is low ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since 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 These react with oxygen and cause its depletion These react with water vapour and cause acid rain ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be 5 0.2 6 1.2 5 0.2 6 1.2 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following refrigerants has lowest freezing point? NH3 Freon-12 CO2 Freon-22 NH3 Freon-12 CO2 Freon-22 ANSWER DOWNLOAD EXAMIANS APP
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