Pregunta 1
Pregunta
What is the relative humidity if the dry-bulb temperature is 100ºF and the wet-bulb temperature is 65ºF?
Pregunta 2
Pregunta
The wet-bulb depression is __________.
Respuesta
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the difference between the dry-bulb and wet-bulb temperatures.
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the same as the wet-bulb temperatures.
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the same as the dry-bulb temperatures.
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when the air is saturated with moisture.
Pregunta 3
Pregunta
Comfort can be described as the gentle balance between __________.
Respuesta
-
air cleanliness, air movement, temperature, and humidity.
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air velocity, air cleanliness, humidity, and air movement.
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air speed, air velocity, temperature, and humidity.
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acceleration, air cleanliness, filtration, and humidity.
Pregunta 4
Pregunta
Infiltration is the term used when referring to the air entering a structure _________.
Pregunta 5
Pregunta
A fresh air intake is necessary to keep the indoor air from becoming _________.
Pregunta 6
Pregunta
The dry-bulb temperature is the __________.
Respuesta
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same as the wet-bulb temperature
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total of the sensible and latent heat
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sensible heat level of the air
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sensible heat less the humidity
Pregunta 7
Pregunta
If the dry-bulb temperature is 93ºF and the wet-bulb temperature is 60ºF, what is the specific volume of the air?
Respuesta
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14.0 ft^3/lb
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14.0 lb/ft^3
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10 lb/ft^3
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10 ft^3/lb
Pregunta 8
Pregunta
The human body is comfortable when the heat produced in the body is equal to the heat lost to the surroundings.
Pregunta 9
Pregunta
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.
Pregunta 10
Pregunta
Introduction of forced ventilation in the winter heating season helps to raise the humidity level.
Pregunta 11
Pregunta
When the dry-bulb and wet-bulb temperatures are the same, the relative humidity of the air is [blank_start]100%[blank_end].
Pregunta 12
Pregunta
Air consists of approximately [blank_start]21%[blank_end] of oxygen.
Pregunta 13
Pregunta
[blank_start]7,000[blank_end] grains of moisture equals one pound of water.