Consider the following statements with regard to air-conditioning systems:1. In adiabatic saturation process, air-vapour mixture undergoes a process of constant relative humidity2. Wet bulb temperature of air whose relative humidity is 100 is equal to the dew point temperature3. In winter air conditioning, the process is heating and humidification4. For designing air conditioning ducts, equal friction method automatically reduces the air velocity in the duct in the direction of flowWhich of the above statements are correct?

Consider the following statements with regard to air-conditioning syst

1.	Consider the following statements with regard to air-conditioning systems:1. In adiabatic saturation process, air-vapour mixture undergoes a process of constant relative humidity2. Wet bulb temperature of air whose relative humidity is 100 is equal to the dew point temperature3. In winter air conditioning, the process is heating and humidification4. For designing air conditioning ducts, equal friction method automatically reduces the air velocity in the duct in the direction of flowWhich of the above statements are correct?
A.	1 and 2
B.	1 and 4
C.	2 and 3
D.	3 and 4
Answer» D. 3 and 4

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