Question

If the ratio of wet-bulb depression to wet bulb temperature is 0.6, then the ratio of dry bulb temperature to wet-bulb temperature will be

Answer 1

The wet bulb depression is the difference between the dry-bulb temperature(Air temperature) and the wet-bulb temperature.

wet bulb depression(WBD) (= DBT-WBT) for dessert areas it is large and for coastal areas it is small for ovious reasons.
given WBD/WBT=0.6
We have WBD=DBT-WBT
on dividing both sides by WBT
WBD/WBT=(DBT/WBT)-(WBT/WBT)
0.6=(DBT/WBT)-1
DBT/WBT=1.6
hence the ratio of dry bulb temperature to wet-bulb temperature will be 1.6





It is measured by a psychrometer .