Name:     ID: 
 
    Email: 

PSYCROMETRIC TEST

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
4. A duct is placed in a room that has a temperature of 95 degrees with a humidity ratio of 0.0142.The duct has air running through it at 55 degrees and is not insulated.  Below what dew point temperature will the duct start to sweat.
a.
55 Degrees
c.
67 Degrees
b.
65 Degrees
d.
57 Degrees
 

 2. 
The mixed air chamber in a fan unit has 20% of 95 degree air and 80% of 80 degree return air.What is the mixed air temperature.
a.
83 Wet Bulb
c.
85 Wet Bulb
b.
83 Dry Bulb
d.
85 Dry Bulb
 

Problem
 

 3. 
An air vapor mixture at 78 Dry Bulb and 45 Percent Relative Humidity has the following other conditions!

Dew Point Temperature: __________

Wet Bulb Temperature:__________

Specific Humidity:_____________
 

 4. 
Water pipes  having a surface temperature of 55 degrees F pass through a room which is maintained at a 74 degree dry bulb. What is the highest relative humidity that can be maintained in the room before moisture will condense on the pipes.

Percent Relative Humidity:__________
 

 5. 
Air at a 40 degree dry bulb and 35 degree wet bulb is heated to 85 degrees F dry bulb. At the leaving air conditions from the heating source find the following:

Wet Bulb Temperature:____________________

Percent Relative Humidity:_______________

Dew Point:_____________________

Specific Humdity:___________________
 



 
Submit          Reset Help