The by-pass factor, in case of sensible cooling of air, is given by (where td1 = Dry bulb temperature of air entering the cooling coil, td2 = Dry bulb temperature of air leaving the cooling coil, and td3 = Dry bulb temperature of the cooling coil)

✅ The correct answer is option B.

In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature

which lies between the dry bulb and wet bulb temperatures of the incoming stream
which lies between the wet bulb and dew point temperatures of the incoming stream
which is lower than the dew point temperature of the incoming stream
of adiabatic saturatio
✅ The correct answer is option C.