HVAC STUDY GUIDE EXAM QUESTIONS WITH SOLUTIONS
GUARANTEE A+ 2025
What effect does humidity have on the comfort of a body? - Higher humidity makes a
person feel warmer.
Effective temperature is an index to determine equivalent temperature sensation. - True
Select the following true statements regarding thermal comfort. - -Combined effects of
environmental and individual factors.
-Combination of temperature and humidity where people report comfort.
-Seasonal relationship between indoor and outdoor temperatures.
-Women, older people and people who live in southern climates prefer higher
temperatures.
-Suggested inside winter dry-bulb temperature
-Inactive people require higher temperatures
Select the accurate statement regarding operative temperature (in relation to comfort). -
-It is based on an arbitrary set of indexes that combine into a single number.
-It considers the effects of dry bulb temperature
-It considers the effects of radiant temperature
-It considers the effects of air motion
-It is equal to the temperature at which a specified hypothetical environment would
support the same heat loss from an unclothed reclining human body as teh actual
environment.
With respect to radiation heat transfer, select the correct definition of the term
emissivity. - The ratio of radiant energy emitted by a surface and radiant energy emitted
by a black body at the same temperature.
Correctly identify the types of coatings and surfaces used on buildings that intentionally
affect radiant heat transfer. Select all the true statements that apply. - -Dark colors
absorb more sunlight than light colors because a large portion of the radiative energy of
sunlight is in the visible light band.
-Surface color is a poor indicator of the ability to absorb infrared radiation.
-Selective surfaces/coatings (e.g., black chrome, black nickel, or black crystal) are
specially designed surface coatings that have a high absorptivity and high emissivity for
visible light and short wavelength infrared radiation, and a low absorptivity and low
emissivity for long wavelength infrared radiation.
-Unlike flat black painted surfaces, selective coatings can restrict long wavelength
radiative evergy loss from surfaces at or near room temperature.
With respect to buildings, identify the factors and descriptions that contribute to heat
loss in a building. - -Heat passing through a material in the building envelope.
-Air leakage through the building envelope and the energy required to heat
unconditioned air that has leaked into the structure.
, -The intentional introduction of outdoor air into the building or parts of the building with
the intent to maintain or improve indoor air quality.
-Convection of conditioned air to the outdoors and vice versa due to the opening of
doors for human ingress and egress.
What is transmission heat loss, and where does it occur in a building? - Heat loss
through the building envelope (building assembly).
What is a thermal bridge in a building envelope assembly, and how does it affect heat
loss in a building? - A penetration of the insulation layer by a highly conductive or non-
insulating material (e.g., concrete or steel). Those areas of the building envelope
assembly with high thermal conductivity will increase heat flow.
Select the most correct and comprehensive statement regarding building science. - -
The study of building dynamics
-The functional relationships between a building's components, equipment, and systems
-Intended to understand and prevent problems related to building design, construction,
and operation.
Embodied energy is the sum of all energy used to _________ a product or material. -
Extract
Process
Refine
Fabricate
Transport
Install
Select the answers that are types of indoor air pollutants. Select all that apply. - Smoke
particles
Dust
Bacteria
Fungus
Mold spores
Chemical vapors
What is sick building syndrome? - -Typical complaints from occupants include lethargy,
headache, dizziness, nausea, eye irritation, nasal congestion, and inability to
concentrate.
-Sickness associated with people's presence in a building.
-It is caused by poor design, maintenance, and operation of a building's ventilation
system.
If radon levels in a building interior are recorded at 8 pCi/Lm, then the U.S.
Environmental Protection Agency recommends that the house be fixed. - True
GUARANTEE A+ 2025
What effect does humidity have on the comfort of a body? - Higher humidity makes a
person feel warmer.
Effective temperature is an index to determine equivalent temperature sensation. - True
Select the following true statements regarding thermal comfort. - -Combined effects of
environmental and individual factors.
-Combination of temperature and humidity where people report comfort.
-Seasonal relationship between indoor and outdoor temperatures.
-Women, older people and people who live in southern climates prefer higher
temperatures.
-Suggested inside winter dry-bulb temperature
-Inactive people require higher temperatures
Select the accurate statement regarding operative temperature (in relation to comfort). -
-It is based on an arbitrary set of indexes that combine into a single number.
-It considers the effects of dry bulb temperature
-It considers the effects of radiant temperature
-It considers the effects of air motion
-It is equal to the temperature at which a specified hypothetical environment would
support the same heat loss from an unclothed reclining human body as teh actual
environment.
With respect to radiation heat transfer, select the correct definition of the term
emissivity. - The ratio of radiant energy emitted by a surface and radiant energy emitted
by a black body at the same temperature.
Correctly identify the types of coatings and surfaces used on buildings that intentionally
affect radiant heat transfer. Select all the true statements that apply. - -Dark colors
absorb more sunlight than light colors because a large portion of the radiative energy of
sunlight is in the visible light band.
-Surface color is a poor indicator of the ability to absorb infrared radiation.
-Selective surfaces/coatings (e.g., black chrome, black nickel, or black crystal) are
specially designed surface coatings that have a high absorptivity and high emissivity for
visible light and short wavelength infrared radiation, and a low absorptivity and low
emissivity for long wavelength infrared radiation.
-Unlike flat black painted surfaces, selective coatings can restrict long wavelength
radiative evergy loss from surfaces at or near room temperature.
With respect to buildings, identify the factors and descriptions that contribute to heat
loss in a building. - -Heat passing through a material in the building envelope.
-Air leakage through the building envelope and the energy required to heat
unconditioned air that has leaked into the structure.
, -The intentional introduction of outdoor air into the building or parts of the building with
the intent to maintain or improve indoor air quality.
-Convection of conditioned air to the outdoors and vice versa due to the opening of
doors for human ingress and egress.
What is transmission heat loss, and where does it occur in a building? - Heat loss
through the building envelope (building assembly).
What is a thermal bridge in a building envelope assembly, and how does it affect heat
loss in a building? - A penetration of the insulation layer by a highly conductive or non-
insulating material (e.g., concrete or steel). Those areas of the building envelope
assembly with high thermal conductivity will increase heat flow.
Select the most correct and comprehensive statement regarding building science. - -
The study of building dynamics
-The functional relationships between a building's components, equipment, and systems
-Intended to understand and prevent problems related to building design, construction,
and operation.
Embodied energy is the sum of all energy used to _________ a product or material. -
Extract
Process
Refine
Fabricate
Transport
Install
Select the answers that are types of indoor air pollutants. Select all that apply. - Smoke
particles
Dust
Bacteria
Fungus
Mold spores
Chemical vapors
What is sick building syndrome? - -Typical complaints from occupants include lethargy,
headache, dizziness, nausea, eye irritation, nasal congestion, and inability to
concentrate.
-Sickness associated with people's presence in a building.
-It is caused by poor design, maintenance, and operation of a building's ventilation
system.
If radon levels in a building interior are recorded at 8 pCi/Lm, then the U.S.
Environmental Protection Agency recommends that the house be fixed. - True
