Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Dew point temperature of air
Ambient air temperature
Dry bulb temperature of air
Wet bulb temperature of air

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Refrigeration and Air Conditioning
Degree of saturation or percentage humidity is

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
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
The mass of water vapour present in 1 m³ of dry air
The mass of water vapour present in 1 kg of dry air

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Refrigeration and Air Conditioning
The reciprocating refrigerant compressors are very suitable for

Large displacements and high condensing pressures
Small displacements and high condensing pressures
Large displacements and low condensing pressures
Small displacements and low condensing pressures

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Refrigeration and Air Conditioning
The coefficient of performance of Electrolux refrigerator is the ratio of

Heat supplied by the gas burner minus the heat absorbed by the evaporator to the heat supplied by the gas burner
Heat absorbed by the evaporator minus the heat supplied by the gas burner to the heat absorbed by the evaporator
Heat absorbed by the evaporator to the heat supplied by the gas burner
Heat supplied by the gas burner to the heat absorbed by the evaporator

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