Rater practice Test UPDATED ACTUAL
Exam Questions and CORRECT Answers
Three million BTUs is equal to how many kWh? - CORRECT ANSWER✔✔- 879
which of the following is among the four environmental factors that affect human comfort in
the indoor environment - CORRECT ANSWER✔✔- The Delta T
Approximately how many cubic feet of natural gas would be required to produce 275,000
Btus? - CORRECT ANSWER✔✔- 275
Comfort is not a function of which of the following: - CORRECT ANSWER✔✔- The
amount of exfiltration ( air exiting the home)
Convection is best exemplified by: - CORRECT ANSWER✔✔- Warm air exfiltrating into
the attic from the house
In the climate zone would a house be found that has 10,600 heating degree days and receives
approximately 25 to 30 inches if rain year? - CORRECT ANSWER✔✔- Cold
One kWh equals - CORRECT ANSWER✔✔- 3412 Btu
what is a common unit used when comparing fuels such as oil,gas and Lp? - CORRECT
ANSWER✔✔- mmbtu
what is the heat transfer for a ceiling having measurements of 30'X 60' with R-38 if the inside
temperature is 72 and the outside temperature is 25? - CORRECT ANSWER✔✔- 22,000
btu/hr
what range of room relative humidity is considered for home occupants? - CORRECT
ANSWER✔✔- 30%-50%
, When does condensation occur? - CORRECT ANSWER✔✔- when the temperature of a
surface is less than the dew point
Which of the following has greater BTU capacity? - CORRECT ANSWER✔✔- 1 gallon
heating oil
Which of the following situations would most likely degrade the indorr air quality? -
CORRECT ANSWER✔✔- Leaks in the return plenum of an 80% AFUE furnace located in a
closet within the building
Which of the following mechanisms of heat transfer would account for frost on a roof even
when the ambient temperature is above freezing? - CORRECT ANSWER✔✔- Radiation
Without changing the grains of water in the air, if the air is heated the RH will: - CORRECT
ANSWER✔✔- decrease
1185 square feet of an attic is insulated to R-30. there is 15 square feet of attic hatch insulated
at R-3. What is the average R-Value for the entire attic? - CORRECT ANSWER✔✔- 27.03
If the thermal mass increases .... - CORRECT ANSWER✔✔- the steady state R-value is not
affected by the thermal mass
The " design temperature" is the temperature equaled or exceeded 99% of the time during
what three winter months - CORRECT ANSWER✔✔- December, January, and Feburary
The term "Thermal mass" refers to material having: - CORRECT ANSWER✔✔- The ability
to store heat
What is the air exiting a structure through cracks and/or holes called? - CORRECT
ANSWER✔✔- Exfiltration
Annual heating loads are expressed in - CORRECT ANSWER✔✔- mmbtu
Exam Questions and CORRECT Answers
Three million BTUs is equal to how many kWh? - CORRECT ANSWER✔✔- 879
which of the following is among the four environmental factors that affect human comfort in
the indoor environment - CORRECT ANSWER✔✔- The Delta T
Approximately how many cubic feet of natural gas would be required to produce 275,000
Btus? - CORRECT ANSWER✔✔- 275
Comfort is not a function of which of the following: - CORRECT ANSWER✔✔- The
amount of exfiltration ( air exiting the home)
Convection is best exemplified by: - CORRECT ANSWER✔✔- Warm air exfiltrating into
the attic from the house
In the climate zone would a house be found that has 10,600 heating degree days and receives
approximately 25 to 30 inches if rain year? - CORRECT ANSWER✔✔- Cold
One kWh equals - CORRECT ANSWER✔✔- 3412 Btu
what is a common unit used when comparing fuels such as oil,gas and Lp? - CORRECT
ANSWER✔✔- mmbtu
what is the heat transfer for a ceiling having measurements of 30'X 60' with R-38 if the inside
temperature is 72 and the outside temperature is 25? - CORRECT ANSWER✔✔- 22,000
btu/hr
what range of room relative humidity is considered for home occupants? - CORRECT
ANSWER✔✔- 30%-50%
, When does condensation occur? - CORRECT ANSWER✔✔- when the temperature of a
surface is less than the dew point
Which of the following has greater BTU capacity? - CORRECT ANSWER✔✔- 1 gallon
heating oil
Which of the following situations would most likely degrade the indorr air quality? -
CORRECT ANSWER✔✔- Leaks in the return plenum of an 80% AFUE furnace located in a
closet within the building
Which of the following mechanisms of heat transfer would account for frost on a roof even
when the ambient temperature is above freezing? - CORRECT ANSWER✔✔- Radiation
Without changing the grains of water in the air, if the air is heated the RH will: - CORRECT
ANSWER✔✔- decrease
1185 square feet of an attic is insulated to R-30. there is 15 square feet of attic hatch insulated
at R-3. What is the average R-Value for the entire attic? - CORRECT ANSWER✔✔- 27.03
If the thermal mass increases .... - CORRECT ANSWER✔✔- the steady state R-value is not
affected by the thermal mass
The " design temperature" is the temperature equaled or exceeded 99% of the time during
what three winter months - CORRECT ANSWER✔✔- December, January, and Feburary
The term "Thermal mass" refers to material having: - CORRECT ANSWER✔✔- The ability
to store heat
What is the air exiting a structure through cracks and/or holes called? - CORRECT
ANSWER✔✔- Exfiltration
Annual heating loads are expressed in - CORRECT ANSWER✔✔- mmbtu
