# Zero Wet Bulb Depression Signifies the Air is

By Mohit Uniyal|Updated : July 13th, 2022

Zero wet-bulb depression signifies the air is

A. Completely dry
B. Partially saturated
C. Fully saturated
D. 3/4th saturate

Choose the correct answer from the given option.

Answer: C - Full Saturated

## Zero wet-bulb depression signifies the air is fully saturated.

### Solution:

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

WBD = DBT -WBT

When the air is completely saturated, it reaches the saturation line, where the relative humidity is 100% and the dry bulb, wet bulb, and dew point temperatures are all the same. At this instant, wet-bulb depression is zero. It means that the zero wet-bulb depression signifies the air is fully saturated.

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