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

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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

a) Humidity ratio

b) Relative humidity

c) Absolute humidity

d) Degree of saturation

Refrigeration & Air-Conditioning Practice Set-6