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Exam 20: Indoor Air Quality

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Question 1

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As the relative humidity increases, the efficiency of an electrostatic filter increases.

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Question 2

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Air flows through the components of an electronic air cleaner in which order?

A) pre-filter, ionization section, charcoal filter
B) charcoal filter, pre-filter, ionization section
C) ionization section, charcoal filter, pre-filter
D) pre-filter, charcoal filter, ionization section

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Question 3

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Fiberglass filters can be placed in the air stream in any position.

As the temperature of the air sample increases, the amount of moisture that a given air sample can hold greatly increases.

A HEPA filter must be able to capture 99.7% of all particulate matter that is at least __________ microns in size.

If asbestos is found in a home, the homeowner can remove it as long as he/she wears a dust mask.

Which of the following is NOT a food source for mold?

It is perfectly safe to look at UV lights when they are illuminated.

If humidity levels in a home are over __________%, mold growth will be accelerated.

Air filters should be placed in the __________ of the forced air system.

List the three methods of keeping indoor pollutants to a minimum.

List six indoor air pollutants.

Explain how the application of UV-C light works to improve indoor air quality.

What does the acronym HEPA stand for in reference to air filters?

Arrange the following air filters in the order of effectiveness in filtering the air, with 1 being the best and 5 being the worst. _____ extended surface filters _____ steel filters _____ fiberglass filters _____ HEPA filters _____ foam filters

The recommended humidity level for a residence should be __________% to __________% relative humidity.

UV lights can cause severe burns.

Bypass humidifiers do not need a separate fan to move the air through them.

A micron is the measurement equal to:

Ultraviolet light has a wavelength that ranges from __________ nanometers.