Rater practice Test Questions and Answers 100% Pass

Rater practice Test Questions and Answers 100% Pass Three million BTUs is equal to how many kWh? - 879 which of the following is among the four environmental factors that affect human comfort in the indoor environment - The Delta T Approximately how many cubic feet of natural gas would be required to produce 275,000 Btus? - 275 Comfort is not a function of which of the following: - The amount of exfiltration ( air exiting the home) Convection is best exemplified by: - 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? - Cold One kWh equals - 3412 Btu what is a common unit used when comparing fuels such as oil,gas and Lp? - 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? - 22,000 btu/hr what range of room relative humidity is considered for home occupants? - 30%-50% When does condensation occur? - when the temperature of a surface is less than the dew point Which of the following has greater BTU capacity? - 1 gallon heating oil 2 | P a g e Emily Charlene © 2025, All Rights Reserved. Which of the following situations would most likely degrade the indorr air quality? - 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? - Radiation Without changing the grains of water in the air, if the air is heated the RH will: - 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? - 27.03 If the thermal mass increases .... - 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 - December, January, and Feburary The term "Thermal mass" refers to material having: - The ability to store heat What is the air exiting a structure through cracks and/or holes called? - Exfiltration Annual heating loads are expressed in - mmbtu Which of the following is the primary plane of air tightness in a building? - 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? - 10 How many pascals on average are in one inch of water column? - 250 what is air leaving a structure through cracks and/or holes called - exfiltration of the following where is the most likely place for the most air infiltration in a home? - a return chase opened to the attic? 3 | P a g e Emily Charlene © 2025, All Rights Reserved. If a duct system is leaking on the supply side, what is a possible consequence? - *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? - 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? - The infiltration rate at any pressure difference A 1000 sq/ft attic has 750sq/ft insulated to R-30 and 250 sq/ft insulated to R-19. What is the overall average R-Value of the attic? - 26.3 According to RESNET guidelines when preforming combustion appliance testing, what is the first action item? - Determine if there are gas leaks in the fittings and connections of natural gas supply lines within the home A duct leakage test is preformed at what standard of pressure? - 25 pascal