What is the relative humidity if the dry-bulb temperature is 100ºF and the wet-bulb temperature is 65ºF?
13%
33%
43%
63%
The wet-bulb depression is __________.
the difference between the dry-bulb and wet-bulb temperatures.
the same as the wet-bulb temperatures.
the same as the dry-bulb temperatures.
when the air is saturated with moisture.
Comfort can be described as the gentle balance between __________.
air cleanliness, air movement, temperature, and humidity.
air velocity, air cleanliness, humidity, and air movement.
air speed, air velocity, temperature, and humidity.
acceleration, air cleanliness, filtration, and humidity.
Infiltration is the term used when referring to the air entering a structure _________.
through an air make-up unit
around doors and windows
through ventilation
because of street traffic
A fresh air intake is necessary to keep the indoor air from becoming _________.
too humid
superheated
oxygen starved and stagnant
too dry
The dry-bulb temperature is the __________.
same as the wet-bulb temperature
total of the sensible and latent heat
sensible heat level of the air
sensible heat less the humidity
If the dry-bulb temperature is 93ºF and the wet-bulb temperature is 60ºF, what is the specific volume of the air?
14.0 ft^3/lb
14.0 lb/ft^3
10 lb/ft^3
10 ft^3/lb
The human body is comfortable when the heat produced in the body is equal to the heat lost to the surroundings.
The rate at which water will evaporate from the wick on the wet-bulb thermometer is determined by the moisture content of the surrounding air.
Introduction of forced ventilation in the winter heating season helps to raise the humidity level.
When the dry-bulb and wet-bulb temperatures are the same, the relative humidity of the air is .
Air consists of approximately of oxygen.
grains of moisture equals one pound of water.
