railway RRB JE (CBT I + CBT II) Mock Test 2024 Refrigeration and Air Conditioning Air Conditioning Properties of Moist Air (Psychrometric Properties)
If PV is partial pressure of water vapour in air and PS is saturation pressure of water vapour at same temperature, then relative humidity is equal to
1
PV/PS
2
PS/PV
3
PS – PV
4
PV – PS