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Rater Practice Test Exam Questions with Correct Answers

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Three million BTUs is equal to how many kWh? - Answer-879 which of the following is among the four environmental factors that affect human comfort in the indoor environment - Answer-The Delta T Approximately how many cubic feet of natural gas would be required to produce 275,000 Btus? - Answe...

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Rater Practice Test Exam Questions with
Correct Answers
Three million BTUs is equal to how many kWh? - Answer-879

which of the following is among the four environmental factors that affect human comfort
in the indoor environment - Answer-The Delta T

Approximately how many cubic feet of natural gas would be required to produce
275,000 Btus? - Answer-275

Comfort is not a function of which of the following: - Answer-The amount of exfiltration
( air exiting the home)

Convection is best exemplified by: - 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? - Answer-Cold

One kWh equals - Answer-3412 Btu

what is a common unit used when comparing fuels such as oil,gas and Lp? - 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? - Answer-22,000 btu/hr

what range of room relative humidity is considered for home occupants? - Answer-30%-
50%

When does condensation occur? - Answer-when the temperature of a surface is less
than the dew point

Which of the following has greater BTU capacity? - Answer-1 gallon heating oil

Which of the following situations would most likely degrade the indorr air quality? -
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? - Answer-Radiation

, Without changing the grains of water in the air, if the air is heated the RH will: - 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? - Answer-27.03

If the thermal mass increases .... - 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 - Answer-December, January, and Feburary

The term "Thermal mass" refers to material having: - Answer-The ability to store heat

What is the air exiting a structure through cracks and/or holes called? - Answer-
Exfiltration

Annual heating loads are expressed in - Answer-mmbtu

Which of the following is the primary plane of air tightness in a building? - Answer-The
pressure Boundary

The high temperature for in day in Atlanta was 70 degrees with an overnight low of 40
degrees. How many heating degrees days occurred? - Answer-10

How many pascals on average are in one inch of water column? - Answer-250

what is air leaving a structure through cracks and/or holes called - Answer-exfiltration

of the following where is the most likely place for the most air infiltration in a home? -
Answer-a return chase opened to the attic?

If a duct system is leaking on the supply side, what is a possible consequence? -
Answer-*insufficient air to different areas of the house
* The house will have negative pressure WRT the outside
* there are may be comfort complaints

If a house has a duct system and air handler in unconditioned attic and there is equal
leakage in the return system and in the supply system, how would the house pressure
be affected when the air handler is operating? - Answer-the house pressure is not
affected

If a multi point blower door test is preformed instead of a single point blower door test,
what additional information can gained? - Answer-The infiltration rate at any pressure
difference

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