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BPI EP Practice Questions with correct Answers
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BPI EP Practice Questions with correct Answers
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BPI EP Practice Questions with correctAnswers
The temperature equaled to or exceeded 99% of the time during the three coldest
months is - Correct Answers -design temperature actual
what can a HDD day be used to calculate? - Correct Answers -actual heating loads
MMBTU/ yr is generally used to express what - Correct Answers -annual heating load
which unit would be most helpful for comparing the cost of different sources of energy
such as natural gas, electricity, and heating oil? - Correct Answers -millions BTU
determine peak electrical energy demand - Correct Answers -the highest total wattage
of the electrical operated devices in use at a given time
optimal percentage that household moisture should generally be between - Correct
Answers -40-60% RH
IAQ issues can occur when the surface is at or below dew point due to lack of insulation
- Correct Answers -
what is the primary moving force for moisture inside a typical home? - Correct Answers
-airflow
when does condensation occur on a surface? - Correct Answers -when the dew point
temperature of the air in contact with it is greater than the surface temperature
(when the surface is below dew point, you get condensation)
the principal function of a vapor retarder is to reduce what? - Correct Answers -moisture
flow by diffusion
the thermal boundary.... - Correct Answers --limits heat flow between inside and outside
- is easy to identify by presence of insulation
the air barrier ... - Correct Answers -- limits airflow between inside and outside
- is located using the blower door
, air leakage requires ... - Correct Answers -a hole and a pressure difference across that
hole
indirect leakage ... - Correct Answers -enters at one location, moves through building
cavities, and exits at a different location
cold air enters from - Correct Answers -below the neutral pressure plane
pressure moves from - Correct Answers -high to low
prioritize air sealing by stack effect ABC - Correct Answers -attic, basement, conditioned
space
what two boundaries should be continuous and in contact with each other - Correct
Answers -pressure and thermal
what drives pressure differences? - Correct Answers -wind, heat, and fans
stack effect is best described as a force that - Correct Answers -drives infiltration and
exfiltration with relation to the building height
what direction will air always move? - Correct Answers -from high pressure to low
pressure
which of the following is a property of warm air - Correct Answers -it is less dense than
cold air
in buildings with attached garages which should be done to ensure health and safety -
Correct Answers -eliminate pollutant pathways into the living space
stack effect occurs when air densities are what? - Correct Answers -different form insdie
to outside of a building
R values are additive - Correct Answers -
U values must be averages using the weighted average - Correct Answers -so you
would add up all of the R values and divide 1 by that to get the U of the total R values
low e coating has what color tint? - Correct Answers -greenish
low e coating reflects back the rooms heat in the winter and the outdoor heat in the
summer
windows are rated by the - Correct Answers -national fenestration rating council
what is defined as a measurement of thermal transmittance ? - Correct Answers -U-
value
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