HVAC Study Questions with Answers Graded A+
Why is IAQ important?
a) to provide a comfortable environment for occupants
b) to provide enough oxygen for occupants
c) to provide the right temperature for a productive envi- e) to provide a healthy environment for occupants
ronment for occupants
d) to provide suflcient airflow for occupants
e) to provide a healthy environment for occupants
What is not considered a contaminate?
a) Carbon Dioxide
b) Ozone
d) Oxygen
c) Carbon Monoxide
d) Oxygen
e) Radon
What gas is the best indicator for the quality of air in a
building?
a) Oxygen
b) Carbon Dioxide b) Carbon Dioxide
c) Ozone
d) Carbon Monoxide
e) Radon
What is not true statement about carcinogens?
a) carcinogen exposure can cause irreversible health
problems
b) exposure to carcinogens might be unnoticeable
c) the only source of carcinogens comes from environ- c) the only source of carcinogens comes from environ-
mental tobacco smoke (ETS) mental tobacco smoke (ETS)
d) carcinogens are among the most significant contami-
nants
e) the risk of cancer increases with level and time of
exposure to carcinogens
, HVAC Study Questions with Answers Graded A+
How can concentration of contaminants be calculated?
a) by adding the source strength to the ventilation rate
b) by dividing the source strength by the ventilation rate
c) by subtracting the ventilation rate from the source b) by dividing the source strength by the ventilation rate
strength
d) by multiplying the source strength by 1000 ppm
e) by dividing the source strength by the production rate
What is the recommended outdoor air ventilation rate per
person for an oflce space according to ASHRAE Standard
62-1989?
a) 20 cfm
a) 20 cfm
b) 45 cfm
c) 100 cfm
d) 300 cfm
e) 1000 cfm
What is not a primary way to attect air quality control?
a) ventilation
b) source control
c) humidity control
c) humidity control
d) air cleaning
e) use of outdoor air
Which method is not part of source control?
a) keep chemicals out of conditioned spaces
b) eliminate mold spores in ducts
d) use of filters
c) use of exhaust hoods
d) use of filters
e) maintain a positive pressure gradient
What is the incorrect statement?
a) The Indoor Air Quality Procedure usually results in lower
operation costs compared to the Ventilation Rate Proce-
, HVAC Study Questions with Answers Graded A+
dure.
b) The Ventilation Rate Procedure prescribes the rate at
which outdoor air must be delivered to all conditioned
spaces.
c) The Ventilation Rate Procedure is less expensive than
the Indoor Air Quality Procedure because outdoor is deliv-
c) The Ventilation Rate Procedure is less expensive than
ered directly to the building and therefore the ventilation
the Indoor Air Quality Procedure because outdoor is deliv-
eflciency of each room does not have to be taken into
ered directly to the building and therefore the ventilation
account.
eflciency of each room does not have to be taken into
d) The Indoor Air Quality Procedure achieves acceptable
account.
air quality by restricting the concentration of all known and
specifiable contaminants.
e) The Indoor Air Quality Procedure is the most desirable
method to achieve indoor air quality but it is diflcult to
implement and more expensive compared to the Ventila-
tion Rate Procedure.
What is the best placement for an outdoor air intake?
a) close to the air exhaust to be able to use heat recovery
devices
b) away from sources of pollutants b) away from sources of pollutants
c) at ground level
d) on the top of the roof
e) on the side of the building that does not face a street
What is usually not considered to be a part of the sec-
ondary system?
a) pump
b) chiller
c) filter
d) duct
e) fan
Why is IAQ important?
a) to provide a comfortable environment for occupants
b) to provide enough oxygen for occupants
c) to provide the right temperature for a productive envi- e) to provide a healthy environment for occupants
ronment for occupants
d) to provide suflcient airflow for occupants
e) to provide a healthy environment for occupants
What is not considered a contaminate?
a) Carbon Dioxide
b) Ozone
d) Oxygen
c) Carbon Monoxide
d) Oxygen
e) Radon
What gas is the best indicator for the quality of air in a
building?
a) Oxygen
b) Carbon Dioxide b) Carbon Dioxide
c) Ozone
d) Carbon Monoxide
e) Radon
What is not true statement about carcinogens?
a) carcinogen exposure can cause irreversible health
problems
b) exposure to carcinogens might be unnoticeable
c) the only source of carcinogens comes from environ- c) the only source of carcinogens comes from environ-
mental tobacco smoke (ETS) mental tobacco smoke (ETS)
d) carcinogens are among the most significant contami-
nants
e) the risk of cancer increases with level and time of
exposure to carcinogens
, HVAC Study Questions with Answers Graded A+
How can concentration of contaminants be calculated?
a) by adding the source strength to the ventilation rate
b) by dividing the source strength by the ventilation rate
c) by subtracting the ventilation rate from the source b) by dividing the source strength by the ventilation rate
strength
d) by multiplying the source strength by 1000 ppm
e) by dividing the source strength by the production rate
What is the recommended outdoor air ventilation rate per
person for an oflce space according to ASHRAE Standard
62-1989?
a) 20 cfm
a) 20 cfm
b) 45 cfm
c) 100 cfm
d) 300 cfm
e) 1000 cfm
What is not a primary way to attect air quality control?
a) ventilation
b) source control
c) humidity control
c) humidity control
d) air cleaning
e) use of outdoor air
Which method is not part of source control?
a) keep chemicals out of conditioned spaces
b) eliminate mold spores in ducts
d) use of filters
c) use of exhaust hoods
d) use of filters
e) maintain a positive pressure gradient
What is the incorrect statement?
a) The Indoor Air Quality Procedure usually results in lower
operation costs compared to the Ventilation Rate Proce-
, HVAC Study Questions with Answers Graded A+
dure.
b) The Ventilation Rate Procedure prescribes the rate at
which outdoor air must be delivered to all conditioned
spaces.
c) The Ventilation Rate Procedure is less expensive than
the Indoor Air Quality Procedure because outdoor is deliv-
c) The Ventilation Rate Procedure is less expensive than
ered directly to the building and therefore the ventilation
the Indoor Air Quality Procedure because outdoor is deliv-
eflciency of each room does not have to be taken into
ered directly to the building and therefore the ventilation
account.
eflciency of each room does not have to be taken into
d) The Indoor Air Quality Procedure achieves acceptable
account.
air quality by restricting the concentration of all known and
specifiable contaminants.
e) The Indoor Air Quality Procedure is the most desirable
method to achieve indoor air quality but it is diflcult to
implement and more expensive compared to the Ventila-
tion Rate Procedure.
What is the best placement for an outdoor air intake?
a) close to the air exhaust to be able to use heat recovery
devices
b) away from sources of pollutants b) away from sources of pollutants
c) at ground level
d) on the top of the roof
e) on the side of the building that does not face a street
What is usually not considered to be a part of the sec-
ondary system?
a) pump
b) chiller
c) filter
d) duct
e) fan
