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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The boiling point of ________ is 10.5°C.

Sulphur dioxide
Ammonia
R-12
Carbon dioxide

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Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Absorber
Condenser, absorber and separator (rectifier)
Condenser
Evaporator

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43834
4
43833
3

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Dry bulb temperature
Dew point temperature
Wet bulb temperature
Relative humidity

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Relative humidity
Degree of saturation
Humidity ratio
Absolute humidity

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant total heat lines
Constant entropy lines
Constant pressure lines
Constant temperature lines

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