Design Principles pt. 2

Electrostatic air filters ionize particles in the air and then draw them to collector plates that have the same charge as the particles. Select one: True False

False

HEPA filters tend to decline in performance over time. Select one: True False

False

Ionic and electronic air cleaners perform significantly better than HEPA filters. Select one: True False

False

Small, solid particulates formed by the condensation and solidification of gaseous materials.

Fumes

High-efficiency filter that removes a high percentage of particles.

HEPA

A growth of minute fungi that forms on vegetable and animal matter.

Mold

A form of oxygen photochemically produced in nature.

Ozone

A substance that is a detriment to comfort, health, and a desirable environment.

Pollutant

An odorless, tasteless, radioactive, inert gas that occurs naturally in soil and rocks.

Radon

An airborne composition of solid particles carried into the atmosphere by gaseous products of incomplete combustion.

Smoke

Designed to be used repeatedly and may be made of synthetic media.

Washable

Dust particles are usually ____ microns in size. Select one: a. 1-200 b. 210-260 c. 300-350 d. 350-500

a. 1-200

Concrete reaches its compressive or design strength within ____. Select one: a. 28 days b. 2 weeks c. 12 hours d. 2 days

a. 28 days

____ are simple, single-cell microorganisms that are responsible for many diseases. Select one: a. Bacteria b. Pollen c. Mildews d. Fungi

a. Bacteria

____ filters use an electrostatic charge that is produced by the friction of air blowing across the fibers in the filter. Select one: a. Passive electrostatic b. Carbon c. HEPA d. UV light

a. Passive electrostatic

Which of the following is a gaseous pollutant? Select one: a. Radon. b. Asbestos. c. Dust. d. Bacteria.

a. Radon.

Carbon monoxide is _____. Select one: a. a result of incomplete combustion of fuel b. photochemically produced in nature c. formed from the natural decay of uranium d. a nontoxic combination of carbon and oxygen

a. a result of incomplete combustion of fuel

The ____ test measures the ability of an air filter to remove atmospheric dust by evaluating the flow rates on both sides of the filter and measuring the quantity of material it captures. Select one: a. atmospheric dust spot efficiency b. fractional efficiency c. synthetic dust weight arrestance d. All of the above.

a. atmospheric dust spot efficiency

A deadly, odorless, colorless gas that leaves a metallic taste in the mouth describes ____. Select one: a. carbon monoxide b. carbon dioxide c. nitrogen oxide d. ozone

a. carbon monoxide

The most accurate of the techniques for measuring air filter performance is the _____. Select one: a. fractional efficiency test b. atmospheric dust spot efficiency test c. synthetic dust weight arrestance test d. DOP HEPAP method

a. fractional efficiency test

Ferrous and nonferrous are terms designated to types of ____. Select one: a. metal b. glass c. wood d. masonry

a. metal

A ventilation system is usually designed to allow the air filter pressure drop to be about ____ of the total pressure drop. Select one: a. one-fourth b. two-thirds c. three-quarters d. seven-eighths

a. one-fourth

Small particles released by plants as part of their reproductive cycle are referred to as ____. Select one: a. pollen b. fungi c. mold d. dust

a. pollen

Lumber that has been dressed or finished to size by running it through a planer is called ____ lumber. Select one: a. surfaced b. recessed c. rough-sawn d. laminated

a. surfaced

Ultraviolet lamps should handle _____ of the bacteria in residential and commercial systems. Select one: a. 45-50% b. 80-90% c. 99-100% d. 25-40%

b. 80-90%

A standard that includes equipment and system requirements and minimum ventilation rates that result in acceptable indoor air quality is _____. Select one: a. ASHRAE Standard 52.2 b. ASHRAE Standard 62 c. ASHRAE Standard 129 d. None of the above.

b. ASHRAE Standard 62

____ filters use an activated-charcoal form to remove solid particles, odor-causing gases, and bacteria. Select one: a. Passive electrostatic b. Carbon c. HEPA d. Disposable

b. Carbon

Information of a general nature such as insurance, supervision, and inspection is located in ____. Select one: a. Division 27 b. Division 01 c. Division 02 d. None of the above.

b. Division 01

____ is an advanced technique used to measure air filter performance in which extremely accurate equipment is used to count the number of particles trapped by the filter and also classify the particles by size. Select one: a. Atmospheric dust spot efficiency b. Fractional efficiency c. Synthetic dust weight arrestance d. All of the above.

b. Fractional efficiency

Laminating is a process in which layers of lumber are bonded by using ____. Select one: a. steel straps b. adhesive c. wood joiners d. #8 or #10 rebar

b. adhesive

Ultraviolet lights ____. Select one: a. have no electrical potential b. are harmful to eyes and skin c. produce ozone as a by-product d. All of the above.

b. are harmful to eyes and skin

Bearings are expressed in ____. Select one: a. deltas b. degrees, minutes, and seconds c. feet, inches, and fractional inches d. square inches

b. degrees, minutes, and seconds

A natural passage of air leaving a building through doors, windows, and other construction joints is referred to as ____. Select one: a. arrestance b. exfiltration c. infiltration d. ventilation

b. exfiltration

Gypsum wallboard, ceramic tile, carpeting, and wood flooring are materials that fall under CSI Division 09, which deals with ____. Select one: a. special construction b. finishes c. wood and plastics d. existing conditions

b. finishes

Small solid particulates suspended in air and formed by the condensation and solidification of gaseous materials are called ____. Select one: a. dust b. fumes c. bioaerosols d. All of the above.

b. fumes

A gas that can function as a disinfectant in certain applications but can be detrimental to human health in higher doses describes ____. Select one: a. radon b. ozone c. nitrogen d. carbon dioxide

b. ozone

An odorless, radioactive, inert gas that is formed from the natural decay of uranium describes ____. Select one: a. asbestos b. radon c. carbon dioxide d. sulfur dioxide

b. radon

Before you read specifications, first review the ____ to become familiar with the type of information included. Select one: a. bill of sales b. table of contents c. index d. magnum opus

b. table of contents

An ERV is ____. Select one: a. used most appropriately in colder climates b. used where humidity control is important c. just the same as a heat recovery ventilator d. All of the above.

b. used where humidity control is important

Information on light switches and receptacles can be found under Division ____ in the specifications. Select one: a. 23 b. 03 c. 26 d. 06

c. 26

Air filters should be changed at approximately ____ of design final resistance. Select one: a. 25% b. 40% c. 80% d. 95%

c. 80%

____ filters remove 99.97% of particles in air passing through. Select one: a. Passive electrostatic b. Carbon c. HEPA d. Disposable

c. HEPA

____ is composed of solid particles carried into the atmosphere by gaseous products of incomplete combustion. Select one: a. Fumes b. Bioaerosols c. Smoke d. Dust

c. Smoke

Airborne microorganisms, such as viruses, fungi, mildew, and yeast, are called ____. Select one: a. fumes b. bacteria c. bioaerosols d. None of the above.

c. bioaerosols

The term ____ refers to the small particles that become temporarily airborne from wind, a sudden earth disturbance, or mechanical work on a solid. Select one: a. smoke b. pollutant c. dust d. fumes

c. dust

A natural exchange of air through leakage into a building is known as ____. Select one: a. arrestance b. exfiltration c. infiltration d. ventilation

c. infiltration

When an atom has an imbalance of electrons and protons, the atom is ____. Select one: a. arrested b. filtered c. ionized d. misaligned

c. ionized

The growth of minute fungi that forms on vegetable and animal matter describes ____. Select one: a. pollen b. virus c. mold d. bacteria

c. mold

In most electronic air cleaners, the larger particles and dirt are removed by a(n) ____. Select one: a. electronic grid b. electrical arcing c. prefilter d. carbon filter

c. prefilter

An HRV transfers humidity as well as heat. Select one: True False

False

Electronic air cleaners use a prefilter to give a negative charge to passing particles. Select one: True False

False

Simple, single-cell microorganisms that are responsible for the transfer of many diseases.

Bacteria

Airborne microorganisms, such as viruses, bacteria, fungi, protozoa, and mold.

Bioaerosols

Activated charcoal made from various substances.

Carbon

A nontoxic gaseous pollutant that results from combustion and respiration.

Carbon dioxide

An odorless, colorless, poisonous gas produced by the incomplete combustion of fuel.

Carbon monoxide

Commonly made as fiberglass panels and media panels.

Disposable

The small particles that become airborne from wind or mechanical work on a solid.

Dust

Uses an electrical charge on air particles.

Electrostatic

It is produced by burning coal, gas, or oil.

Sulfur dioxide

A systematic investigation should be performed by a trained technician if the occupants of a building complain about building-related symptoms. Select one: True False

True

ASHRAE Standard 52.2 rates a filter's efficiency by the size of particle that the filter will capture. Select one: True False

True

ASHRAE Standard 62.1 ties ventilation rates to the number of occupants in a given space. Select one: True False

True

Air filters tend to unload excess contaminants once their capacity has been reached. Select one: True False

True

An electronic air cleaner puts a static electrical charge on particles that pass through it. Select one: True False

True

As incoming fresh air and outgoing stale air passes through an HRV, heat is exchanged, so the incoming air is closer to the temperature of the outgoing air. Select one: True False

True

Carbon monoxide may be found inside homes or offices due to cracked heat exchangers. Select one: True False

True

Ionizing air cleaners may produce ozone as a by-product. Select one: True False

True

Many typical air-conditioning applications provide a favorable, damp environment for the growth and development of mold. Select one: True False

True

Ozone can be used to purify water, remove odors, or to maintain a sterile atmosphere. Select one: True False

True

Sensitivity to indoor pollutants varies from person to person. Select one: True False

True

The Legionella bacteria can live in cooling towers, evaporative condensers, and domestic water systems. Select one: True False

True

Certain types of ____ act as breeding grounds for the various microorganisms. Select one: a. water spray systems b. humidifiers c. wet porous surfaces d. All of the above.

d. All of the above.

OSHA describes sick building syndrome as a reaction to ____ stimuli. Select one: a. chemical b. physical c. biological d. All of the above.

d. All of the above.

Ultraviolet lights are frequently installed in ductwork to reduce ____. Select one: a. bacteria b. mold spores c. viruses d. All of the above.

d. All of the above.

Contour lines that have elevation numbers decreasing toward the middle indicate a ____. Select one: a. hill b. valley c. pond d. Both B and C.

d. Both B and C.

A naturally occurring mineral that forms fiber bundles is ____. Select one: a. carbon b. yeast c. pollen d. asbestos

d. asbestos

A(n) _____ filter is often used in refrigerators because of its ability to reduce odors. Select one: a. washable b. HEPA c. electrostatic d. carbon

d. carbon