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Define (i) Dew point temp. (ii) Wet bulb temp

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Question: 

Define (i) Dew point temp. (ii) Wet bulb temp

Answer: 

i) DPT – Dew point temperature tDP - It is the temperature at which air water vapour mixture starts to condense. D.P.T. of mixture is defined as the temperature at which water vapours starts to condense.

Ii) WBT - Wet bulb temperature - tWB - It is the temperature recorded by thermometer when its bulb is covered with wet cloth known as wick and is exposed to air.