ARE 5.0 PPD Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
lamella - CORRECT ANSWER - type of roof structure, geometry allows it to span large
distances with little or no support
British Thermal Unit (BTU) - CORRECT ANSWER - the amount of heat required to raise the
temperature of 1 bm of water by 1°F
Coefficient of Heat Transmission - CORRECT ANSWER - the overall rate of heat flow
through any combination of materials, including air spaces and air layers on the interior and
exterior of a building assembly
Conductance - CORRECT ANSWER - the number of British thermal units per house that pass
through 1 ft² of homogeneous material 1 in thick when the temperature differential is 1°F
Dew point - CORRECT ANSWER - the temperature at which water vapor in the air becomes
saturated and begins to condense to drops of water
Dry bulb temperature - CORRECT ANSWER - the temperature of the air water mixture as
measured with a standard dry bulb thermometer
Enthalpy - CORRECT ANSWER - the total heat in a substance, including latent heat and
sensible heat
Latent heat - CORRECT ANSWER - heat that causes a change of state of a substance, such as
the heat required to change water into steam
Resistance - CORRECT ANSWER - the number of hours needed for 1 Btu to pass through 1
ft² of material or assembly of a given thickness when the temperature differential is 1 °F. It is the
reciprocal of conductance
,Sensible heat - CORRECT ANSWER - heat that causes a change in temperature of a
substance but not a change of state
Specific heat - CORRECT ANSWER - the number of Btus (joules) required to raise the
temperature of a specific material by 1 °F (1K)
Wet bulb temperature - CORRECT ANSWER - the temperature of the air as measured with a
sling psychrometer
Radiation - CORRECT ANSWER - the transfer of heat energy through electromagnetic waves
from one surface to a cooler surface
Conduction - CORRECT ANSWER - the transfer of heat through direct contact between two
objects of different temperatures
Viewed angle - CORRECT ANSWER - the solid angle formed between the measuring
position and the outer edges of the object
Emissivity - CORRECT ANSWER - the measure of an objects ability to absorb and then
radiate heat
Mean radiant temperature (MRT) - CORRECT ANSWER - the weighted average of the
various surface temperatures in a room and the angle of exposure of the occupant to these
surfaces as well as of any sunlight present
Operative temperature - CORRECT ANSWER - an average of the air temperature of a space
and the mean radiant temperature (MRT) of the space, measured with a globe thermometer
clo - CORRECT ANSWER - unit for measuring human comfort of clothing, equal to an
American man's business suit or 0.15 clo/lbm
,psychrometry - CORRECT ANSWER - the study of the content of air
enthalpy - CORRECT ANSWER - the total amount of both sensible and latent heat in the air
moisture mixture
conduction - CORRECT ANSWER - the transfer of heat through direct contact between
molecules
convection - CORRECT ANSWER - the transfer of heat through the movement of air
radiation - CORRECT ANSWER - the transfer of heat energy through electromagnetic waves
from one surface to a colder surface
building envelope - CORRECT ANSWER - consists of the walls, roof, doors, windows, and
foundation
conductivity (k) - CORRECT ANSWER - the amount of heat lost through 1ft² of a 1 in
thickness other than 1 in
resistance (R) - CORRECT ANSWER - the number of hours needed for 1 Btu to pass through
a material of a given thickness when the temperature differential is 1K
design equivalent temperature difference (DETD) - CORRECT ANSWER - value calculated
as part of heat gain, takes into account the air temperature differences, effects of the sun, thermal
mass, storage effects of materials, colors of finishes exposed to the sun, and the daily
temperature range
sol air temperature - CORRECT ANSWER - an outdoor temperature that combines the effects
of temperature difference with solar radiation
, design cooling load factor (DCLF) - CORRECT ANSWER - takes into account several
variables that affect how solar heat gain occurs including the type of glazing, the type of interior
shading, and the outdoor design temperature
heat pump - CORRECT ANSWER - device that can either heat in the winter or cool in the
summer
degree days - CORRECT ANSWER - a measure of the approximate average yearly
temperature difference between the outside and the inside in a particular location
furnace - CORRECT ANSWER - burn either gas or oil to heat air, then distribute throughout
the building
boiler - CORRECT ANSWER - use fuel to heat water, and steam or hot water is used to
distribute heat
upflow furnace - CORRECT ANSWER - return air is supplied at the bottom of the unit and
the heated air is delivered to the bonnet above the furnace where it's distributed through
ductwork
downflow furnace - CORRECT ANSWER - used in cases where the duct work is in a
basement or crawl space and the furnace is locate on the first floor
horizontal furnace - CORRECT ANSWER - used where headroom is limited, such as in crawl
spaces
compressive refrigeration - CORRECT ANSWER - based on the transfer of heat during the
liquification and evaporation of a refrigerant
compressor - CORRECT ANSWER - takes the refrigerant in a gaseous form and compresses
it to a liquid
Exam Questions and CORRECT Answers
lamella - CORRECT ANSWER - type of roof structure, geometry allows it to span large
distances with little or no support
British Thermal Unit (BTU) - CORRECT ANSWER - the amount of heat required to raise the
temperature of 1 bm of water by 1°F
Coefficient of Heat Transmission - CORRECT ANSWER - the overall rate of heat flow
through any combination of materials, including air spaces and air layers on the interior and
exterior of a building assembly
Conductance - CORRECT ANSWER - the number of British thermal units per house that pass
through 1 ft² of homogeneous material 1 in thick when the temperature differential is 1°F
Dew point - CORRECT ANSWER - the temperature at which water vapor in the air becomes
saturated and begins to condense to drops of water
Dry bulb temperature - CORRECT ANSWER - the temperature of the air water mixture as
measured with a standard dry bulb thermometer
Enthalpy - CORRECT ANSWER - the total heat in a substance, including latent heat and
sensible heat
Latent heat - CORRECT ANSWER - heat that causes a change of state of a substance, such as
the heat required to change water into steam
Resistance - CORRECT ANSWER - the number of hours needed for 1 Btu to pass through 1
ft² of material or assembly of a given thickness when the temperature differential is 1 °F. It is the
reciprocal of conductance
,Sensible heat - CORRECT ANSWER - heat that causes a change in temperature of a
substance but not a change of state
Specific heat - CORRECT ANSWER - the number of Btus (joules) required to raise the
temperature of a specific material by 1 °F (1K)
Wet bulb temperature - CORRECT ANSWER - the temperature of the air as measured with a
sling psychrometer
Radiation - CORRECT ANSWER - the transfer of heat energy through electromagnetic waves
from one surface to a cooler surface
Conduction - CORRECT ANSWER - the transfer of heat through direct contact between two
objects of different temperatures
Viewed angle - CORRECT ANSWER - the solid angle formed between the measuring
position and the outer edges of the object
Emissivity - CORRECT ANSWER - the measure of an objects ability to absorb and then
radiate heat
Mean radiant temperature (MRT) - CORRECT ANSWER - the weighted average of the
various surface temperatures in a room and the angle of exposure of the occupant to these
surfaces as well as of any sunlight present
Operative temperature - CORRECT ANSWER - an average of the air temperature of a space
and the mean radiant temperature (MRT) of the space, measured with a globe thermometer
clo - CORRECT ANSWER - unit for measuring human comfort of clothing, equal to an
American man's business suit or 0.15 clo/lbm
,psychrometry - CORRECT ANSWER - the study of the content of air
enthalpy - CORRECT ANSWER - the total amount of both sensible and latent heat in the air
moisture mixture
conduction - CORRECT ANSWER - the transfer of heat through direct contact between
molecules
convection - CORRECT ANSWER - the transfer of heat through the movement of air
radiation - CORRECT ANSWER - the transfer of heat energy through electromagnetic waves
from one surface to a colder surface
building envelope - CORRECT ANSWER - consists of the walls, roof, doors, windows, and
foundation
conductivity (k) - CORRECT ANSWER - the amount of heat lost through 1ft² of a 1 in
thickness other than 1 in
resistance (R) - CORRECT ANSWER - the number of hours needed for 1 Btu to pass through
a material of a given thickness when the temperature differential is 1K
design equivalent temperature difference (DETD) - CORRECT ANSWER - value calculated
as part of heat gain, takes into account the air temperature differences, effects of the sun, thermal
mass, storage effects of materials, colors of finishes exposed to the sun, and the daily
temperature range
sol air temperature - CORRECT ANSWER - an outdoor temperature that combines the effects
of temperature difference with solar radiation
, design cooling load factor (DCLF) - CORRECT ANSWER - takes into account several
variables that affect how solar heat gain occurs including the type of glazing, the type of interior
shading, and the outdoor design temperature
heat pump - CORRECT ANSWER - device that can either heat in the winter or cool in the
summer
degree days - CORRECT ANSWER - a measure of the approximate average yearly
temperature difference between the outside and the inside in a particular location
furnace - CORRECT ANSWER - burn either gas or oil to heat air, then distribute throughout
the building
boiler - CORRECT ANSWER - use fuel to heat water, and steam or hot water is used to
distribute heat
upflow furnace - CORRECT ANSWER - return air is supplied at the bottom of the unit and
the heated air is delivered to the bonnet above the furnace where it's distributed through
ductwork
downflow furnace - CORRECT ANSWER - used in cases where the duct work is in a
basement or crawl space and the furnace is locate on the first floor
horizontal furnace - CORRECT ANSWER - used where headroom is limited, such as in crawl
spaces
compressive refrigeration - CORRECT ANSWER - based on the transfer of heat during the
liquification and evaporation of a refrigerant
compressor - CORRECT ANSWER - takes the refrigerant in a gaseous form and compresses
it to a liquid
