GATE2017 ME-2: 15

Question

If a mass of moist air contained in a closed metallic vessel is heated, then its 

• A. Relative humidity decreases.
• B. Relative humidity increases.
• C. Specific humidity increases.
• D. Specific humidity decreases.

Answer 1

Ans: A

This case can be considered as  a case of sensible heating, hence the relative humidity decreases keeping the specific humidity constant and an increase in DBT (dry bulb temperature)