The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at ______________ percent relative humidity ?
Correct answer: A. 100
- A. 100
- B. 0
- C. 50
- D. None of these
Explanation
At 100% relative humidity, the air is saturated and no evaporation occurs from the wet bulb, so wet-bulb and dry-bulb temperatures become equal. At any lower humidity, evaporative cooling makes the wet-bulb reading lower.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Mass Transfer Operations
669 free Mass Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Mass Transfer Operations questions
Which of the following equipments is used for liquid dispersion ?
_________________ is the most suitable lubricant for drawing mild steel wires?
______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?
A psychrometer does not measure the __________________ temperature of moist air?
The dew point of moist air becomes ____________________ with decrease in its relative humidity ?
_____________________ remains constant during the adiabatic cooling of moist air?