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 4.33 1.33 2.33 3.33 4.33 1.33 2.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The advantage of dry compression is that It results in high volumetric and mechanical efficiency All of these It permits complete evaporation in the evaporator It permits higher speeds to be used It results in high volumetric and mechanical efficiency All of these It permits complete evaporation in the evaporator It permits higher speeds to be used ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following cycles uses air as the refrigerant? Stirling Bell Coleman Ericson Carnot Stirling Bell Coleman Ericson Carnot ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evaporator changes the low pressure liquid refrigerant from the expansion valve into High pressure liquid refrigerant Low pressure liquid and vapour refrigerant None of these Low pressure vapour refrigerant High pressure liquid refrigerant Low pressure liquid and vapour refrigerant None of these Low pressure vapour refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is Ammonia Freon Brine Carbon dioxide Ammonia Freon Brine Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The heat rejection factor (HRF) is given by 1 - (1/C.O.P) 1 - C.O.P. 1 + C.O.P 1 + (1/C.O.P) 1 - (1/C.O.P) 1 - C.O.P. 1 + C.O.P 1 + (1/C.O.P) ANSWER DOWNLOAD EXAMIANS APP
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