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 4.33 3.33 1.33 2.33 4.33 3.33 1.33 2.33 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about 1 5.12 1.25 2.15 1 5.12 1.25 2.15 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents Condensation of the refrigerant vapour Compression of the refrigerant vapour Metering of the refrigerant liquid Evaporation of the refrigerant liquid Condensation of the refrigerant vapour Compression of the refrigerant vapour Metering of the refrigerant liquid Evaporation of the refrigerant liquid ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called Absolute humidity Relative humidity Humidity ratio Degree of saturation Absolute humidity Relative humidity Humidity ratio Degree of saturation ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a psychrometric chart, specific humidity (moisture content) lines are Horizontal and non-uniformly spaced Vertical and uniformly spaced Horizontal and uniformly spaced Curved lines Horizontal and non-uniformly spaced Vertical and uniformly spaced Horizontal and uniformly spaced Curved lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at Suction of compressor Low pressure side near receiver Delivery of compressor High pressure side close to receiver Suction of compressor Low pressure side near receiver Delivery of compressor High pressure side close to receiver ANSWER DOWNLOAD EXAMIANS APP
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