CPR Psychrometry & Moisture Mapping 2

Question 1

On a psychrometric chart, what does the curved line at the far left represent?

Accepted Answer

The 100% relative humidity saturation curve

Answer

The curved line on the left of a psychrometric chart is the saturation curve, representing 100% relative humidity conditions.

Question 2

Which psychrometric property directly indicates the energy content of moist air and is critical for evaluating dehumidifier performance?

Accepted Answer

Specific enthalpy

Answer

Specific enthalpy measures the total heat content (sensible + latent) of moist air, which is essential for calculating dehumidifier energy efficiency.

Question 3

A restorer measures a dew point of 55°F in a water-damaged room. What does this value mean?

Accepted Answer

The air temperature must be reduced to 55°F before condensation will occur

Answer

Dew point is the temperature at which air becomes saturated and condensation begins; a 55°F dew point means surfaces below that temperature will accumulate condensation.

Question 4

Vapor pressure deficit (VPD) in drying science is best described as:

Accepted Answer

The difference between the saturated vapor pressure and the actual vapor pressure of the air

Answer

VPD is the gap between how much moisture the air could hold at saturation versus how much it actually holds, driving evaporation from wet materials.

Question 5

When using a sling psychrometer, the technician reads a dry-bulb of 80°F and wet-bulb of 67°F. The difference between these readings is called:

Accepted Answer

Wet-bulb depression

Answer

The wet-bulb depression is the difference between dry-bulb and wet-bulb temperatures, used with psychrometric tables to determine relative humidity.

(CPR) Certified Priority Restoration Practice Test

(CPR) Certified Priority Restoration Practice Test

CPR Psychrometry & Moisture Mapping 2