Bpi Building Analyst Challenge Quiz

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  • 1/75 Questions

    What does BPI stand for?

    • Building Performance Industry
    • Building Professional Integration
    • Building Performance Institute
    • Building Professionals Institute
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About This Quiz

Bpi building analyst challenge allows learners to perform comprehensive Home assessments identify root causes of problems and provide solutions based on building science. Take the quiz to test your knowledge on Bpi.

Bpi Building Analyst Challenge Quiz - Quiz

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  • 2. 

    Stack effect will be most prominent within which type of building?

    • Three story building

    • One and a half story building

    • Townhouse unit

    • Two story building

    Correct Answer
    A. Three story building
    Explanation
    The stack effect refers to the movement of air within a building due to temperature differences. In this case, a three-story building would experience the most prominent stack effect because it has a larger height difference between the indoor and outdoor temperatures. As warm air rises and escapes through upper openings, it creates a negative pressure that draws in cooler air from lower levels. This effect is more pronounced in taller buildings, making the three-story building the most suitable option.

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  • 3. 

    What conversion factor would you multiply by to factor the pressure exerted at the base of a 1" (inch) column of water?

    • 25

    • 12.5

    • 249.08

    • 2.5

    Correct Answer
    A. 249.08
    Explanation
    One inch of the water column is approximately equal to 250 Pascals or 249.081, to be precise. This conversion is based on the measurement of pressure, where 1 inch of water column is the pressure exerted at the base of a column of water that is 1 inch in height. Pascals, on the other hand, are the SI unit of pressure. Therefore, to convert the inches of the water column to Pascals, we multiply the value by the conversion factor of 249.08.

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  • 4. 

    A British Thermal Unit (BTU) is the amount of energy needed to raise:

    • One quart of water one degree F

    • One pound of water one degree C

    • One gallon of water one degree F

    • One pound of water one degree F

    Correct Answer
    A. One pound of water one degree F
    Explanation
    A British Thermal Unit (BTU) is a unit of energy measurement. It represents the amount of energy required to raise the temperature of one pound of water by one degree Fahrenheit. This means that if you apply one BTU of energy to one pound of water, its temperature will increase by one degree Fahrenheit.

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  • 5. 

    Carbon monoxide is not detectable without a metering device?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Carbon monoxide is not detectable without a metering device because it is a colorless, odorless, and tasteless gas. This means that our senses cannot detect its presence. A metering device, such as a carbon monoxide detector, is necessary to measure the levels of carbon monoxide in the air and alert us to its presence. Without such a device, it would be impossible to know if carbon monoxide is present, which can be extremely dangerous as it is a toxic gas.

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  • 6. 

    What are 2 primary mechanisms of heat transfer?

    • Conduction

    • Insulation

    • Radiation

    • Both A and C are correct

    Correct Answer
    A. Both A and C are correct
    Explanation
    Both conduction and radiation are primary mechanisms of heat transfer. Conduction refers to the transfer of heat through direct contact between objects or substances, where heat energy is transferred from a higher temperature object to a lower temperature object. On the other hand, radiation is the transfer of heat through electromagnetic waves, such as infrared radiation, which can travel through empty space. Both mechanisms play a significant role in the transfer of heat energy from one object to another.

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  • 7. 

    The primary moving force for moisture inside a typical home is:

    • Capillary action

    • Diffusion

    • Airflow

    • Radiation

    Correct Answer
    A. Airflow
    Explanation
    Airflow is the primary moving force for moisture inside a typical home. When air moves through the home, it carries moisture with it, either from inside the home or from outside sources. This can occur through windows, doors, vents, or any other openings. As air moves, it can also create pressure differentials, causing moisture to be drawn into or pushed out of certain areas. Therefore, airflow plays a crucial role in the movement and distribution of moisture within a home.

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  • 8. 

    When measuring the CO level of an appliance, the measurements should be taken in un-diluted flue gases.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When measuring the CO level of an appliance, it is important to take the measurements in undiluted flue gases because the presence of other gases or substances in the flue gases can affect the accuracy of the CO measurement. Diluted flue gases may not provide an accurate representation of the CO levels emitted by the appliance, which can be crucial for safety and compliance purposes. Therefore, it is necessary to measure the CO level in undiluted flue gases to ensure accurate and reliable results.

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  • 9. 

    Duct sealing:

    • Requires NATE certified crew members

    • Can only be done on newly installed ductwork

    • Improves comfort and reduces energy usage

    • All of the above

    Correct Answer
    A. Improves comfort and reduces energy usage
    Explanation
    Duct sealing improves comfort and reduces energy usage. By sealing any leaks or gaps in the ductwork, it helps to maintain a consistent temperature throughout the home, ensuring that rooms are evenly heated or cooled. This not only increases comfort but also reduces the energy usage by preventing conditioned air from escaping and reducing the need for the HVAC system to work harder. Overall, duct sealing is a beneficial practice that enhances comfort and energy efficiency in a building.

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  • 10. 

    What is the maximum safe level of CO in the household air for technician exposure?

    • 50 ppm

    • 9 ppm

    • 35 ppm

    • 20 ppm

    Correct Answer
    A. 35 ppm
    Explanation
    The maximum safe level of CO in the household air for technician exposure is 35 ppm. This means that technicians can be exposed to carbon monoxide levels up to 35 parts per million without experiencing harmful effects. It is important for technicians to be aware of this limit and take necessary precautions to prevent excessive exposure to CO while working in households.

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  • 11. 

    What is the volume of conditioned space in a single story home with these dimensions: (height of 10 feet | length of 40 feet | width of 20 feet | flat ceiling)

    • 8000 square feet

    • 7200 cubic feet

    • 8000 cubic feet

    • 9800 cubic feet

    Correct Answer
    A. 8000 cubic feet
    Explanation
    The volume of a space is calculated by multiplying the length, width, and height of the space. In this case, the given dimensions are a height of 10 feet, a length of 40 feet, and a width of 20 feet. Multiplying these dimensions together (10 x 40 x 20) gives a volume of 8000 cubic feet.

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  • 12. 

    When warm, humid air is cooled, which of the following is likely to occur?

    • Evaporation

    • Freezing

    • Condensation

    • Pressure difference

    Correct Answer
    A. Condensation
    Explanation
    When warm, humid air is cooled, condensation is likely to occur. Condensation is the process in which water vapor in the air turns into liquid water. As the air cools, it loses its ability to hold moisture, causing the water vapor to condense and form droplets. This is commonly observed when warm air comes into contact with a cold surface, such as a glass of cold water causing water droplets to form on the outside.

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  • 13. 

    What two major components comprise the building envelope?

    • Heating and cooling system

    • Thermal and pressure boundary

    • Thermal and vapor boundary

    • Heating system and occupants

    Correct Answer
    A. Thermal and pressure boundary
    Explanation
    The building envelope consists of two major components: the thermal boundary and the pressure boundary. The thermal boundary refers to the insulation, windows, and other elements that help regulate the transfer of heat between the interior and exterior of the building. The pressure boundary, on the other hand, includes the walls, roof, and other structural elements that protect the interior from external pressures, such as wind. These two components work together to ensure energy efficiency and comfort within the building.

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  • 14. 

    When setting up and installing the blower door for a depressurization test, which is NOT a step that a technician would perform?

    • Establish a baseline pressure measurement

    • Install the fan rings facing inside

    • Adjust the hose connections on the digital pressure gauge

    • Turn the fan around

    Correct Answer
    A. Turn the fan around
    Explanation
    When setting up and installing the blower door for a depressurization test, technicians perform several steps. They establish a baseline pressure measurement to have a reference point for the test. They install the fan rings facing inside to create the necessary pressure difference. They adjust the hose connections on the digital pressure gauge to ensure accurate readings. However, turning the fan around is not a step that a technician would perform as it would disrupt the proper functioning of the blower door system.

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  • 15. 

    When conducting a blower door test and the base pressure is -3 Pascals, what pressure should you depressurize the house to?

    • -50 Pascals

    • -53 Pascals

    • -25 Pascals

    • +50 Pascals

    Correct Answer
    A. -53 Pascals
    Explanation
    In a blower door test, the goal is typically to depressurize the house to a specific pressure level, often referred to as the target pressure. The target pressure is determined based on the testing standards, the purpose of the test, and the desired outcomes. If the base pressure is -3 Pascals (Pa), meaning the house is already under negative pressure by 3 Pascals, and you want to depressurize the house further, you would need to subtract a certain value from the base pressure to reach the desired target pressure. In this case, the correct answer is -53 Pascals, indicating that the house should be depressurized to a pressure of -53 Pascals.

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  • 16. 

    ACH 50 stands for air changes per hour at 50 Pascals of pressure.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    ACH 50 is a measurement used to determine the air changes per hour in a building when it is under a pressure of 50 Pascals. This measurement is important in assessing the energy efficiency and air tightness of a building. A higher ACH 50 value indicates that the building has more air leakage, which can result in increased energy consumption and decreased comfort. Therefore, it is essential to minimize air leakage and achieve a lower ACH 50 value to improve the energy performance of a building.

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  • 17. 

    If there is a leak on the return side of the duct system inside the CAZ, this could cause a combustion appliance to back-draft due to:

    • High negative pressure in the CAZ

    • High negative pressure in the exhaust flue

    • Low outdoor temperature

    • High indoor temperature in the CAZ

    Correct Answer
    A. High negative pressure in the CAZ
    Explanation
    A leak on the return side of the duct system inside the CAZ (Combustion Appliance Zone) can cause a combustion appliance to back-draft due to high negative pressure in the CAZ. When there is a leak in the return side, air from the CAZ can be drawn into the duct system, creating a negative pressure in the CAZ. This negative pressure can disrupt the normal flow of combustion gases, causing them to be pulled back into the living space instead of being properly vented out through the exhaust flue. This can be dangerous as it can lead to the release of harmful gases, such as carbon monoxide, into the indoor environment.

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  • 18. 

    Which organization provides ventilation standards for residential housing?

    • ASTM

    • ASHRAE

    • ANSI

    • OSHA

    Correct Answer
    A. ASHRAE
    Explanation
    ASHRAE stands for the American Society of Heating, Refrigerating and Air-Conditioning Engineers. They are an organization that provides ventilation standards for residential housing. Their standards cover various aspects of ventilation, including requirements for air quality, ventilation rates, and system design. ASHRAE's standards are widely recognized and used in the industry to ensure that residential buildings have proper ventilation systems in place to maintain a healthy and comfortable indoor environment.

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  • 19. 

    CAZ testing is performed where?

    • In the whole house

    • In the exhaust flue of the appliance

    • In the basement or garage

    • In the combustion appliance area

    Correct Answer
    A. In the combustion appliance area
    Explanation
    CAZ testing is performed in the combustion appliance area. This is because the purpose of CAZ testing is to assess the safety and efficiency of combustion appliances, such as furnaces and water heaters. By conducting the testing in the combustion appliance area, technicians can evaluate factors like air quality, ventilation, and potential hazards associated with the appliances' operation. This ensures that the appliances are functioning properly and that there is no risk of carbon monoxide or other harmful gases being released into the living space.

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  • 20. 

    Which of the following tools can be used to investigate airflow in buildings

    • Balometer

    • Blower door

    • Anemometer

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    All of the tools mentioned, namely balometer, blower door, and anemometer, can be used to investigate airflow in buildings. A balometer is used to measure air volume and velocity, providing information about the airflow in a specific area. A blower door is used to assess the airtightness of a building and identify any leaks or drafts. An anemometer measures air velocity, allowing for the analysis of airflow patterns within a building. Therefore, all three tools are suitable for investigating airflow in buildings.

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  • 21. 

    The percentage of oxygen of air is 21%

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given statement is true. The percentage of oxygen in the air is indeed 21%. This is the average concentration of oxygen in Earth's atmosphere at sea level. Oxygen is essential for the survival of most living organisms, including humans, and plays a crucial role in various biological and chemical processes.

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  • 22. 

    A Heating Degree Day (HDD) is each degree that the average daily temperature is below the base temperature (65 degrees F).

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A Heating Degree Day (HDD) is a measurement used to estimate the amount of energy needed to heat a building. It is calculated by subtracting the average daily temperature from the base temperature of 65 degrees Fahrenheit. If the average daily temperature is below 65 degrees Fahrenheit, it means that each degree below 65 adds to the total HDD. Therefore, the statement that "A Heating Degree Day (HDD) is each degree that the average daily temperature is below the base temperature (65 degrees F)" is true.

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  • 23. 

    If the high was 60 degrees F, and the low was 30 degrees F, how many HDD's occured that day?

    • 20

    • 45

    • 65

    • 30

    Correct Answer
    A. 20
    Explanation
    The number of heating degree days (HDD) is calculated by subtracting the average temperature of a day from a base temperature (usually 65 degrees F) and summing up all the positive values. In this case, the average temperature would be (60 + 30) / 2 = 45 degrees F. Subtracting this from the base temperature gives 65 - 45 = 20 HDDs.

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  • 24. 

    What 2 things are needed for air to move?

    • A window and condensation

    • A hole and change in pressure

    • Airlfow and moisture

    • A hole and insulation

    Correct Answer
    A. A hole and change in pressure
    Explanation
    Air moves when there is a difference in pressure between two areas and there is a passage or opening for the air to flow through. This passage or opening can be referred to as a "hole". When there is a change in pressure, such as a high pressure area moving towards a low pressure area, air will naturally move from the high pressure area to the low pressure area through the hole or passage. Therefore, both a hole and a change in pressure are needed for air to move.

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  • 25. 

    A vapor diffusion retarder is another term for vapor barrier.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A vapor diffusion retarder and a vapor barrier are essentially the same thing. Both terms refer to a material or layer that is used to prevent the movement of water vapor through a building assembly. This helps to control moisture levels and prevent condensation within the building. Therefore, the statement that a vapor diffusion retarder is another term for a vapor barrier is true.

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  • 26. 

    A house with 50 cfm going out through the bath exhaust has 50 cfm coming back into the home through leaks.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    In a well-sealed and balanced ventilation system, the amount of air going out (exhaust) should ideally match the amount of air coming in (supply). If a house has a bath exhaust fan with a flow rate of 50 cubic feet per minute (cfm) expelling air, it doesn't necessarily mean that there will be an equal and opposite 50 cfm of air leaking back into the home. In a well-designed and properly sealed house, the inflow and outflow of air are typically balanced to maintain indoor air quality and energy efficiency.

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  • 27. 

    When developing an air sealing strategy, it is generally best to start where?

    • Where the blower door reveals leaks exist

    • At the leaks around windows and doors

    • In the crawlspace or basement

    • At the top of the home

    Correct Answer
    A. At the top of the home
    Explanation
    When developing an air sealing strategy, it is generally best to start at the top of the home. This is because hot air rises, so any leaks or gaps in the ceiling or attic area can allow warm air to escape, leading to energy loss and reduced efficiency. By sealing these areas first, it helps to create a more airtight envelope for the home and prevent air leakage from occurring. Additionally, addressing the upper areas of the home can also help to prevent moisture and condensation issues that may arise from air infiltration.

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  • 28. 

    Propane has more potential energy than natural gas.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Propane has more potential energy than natural gas because it has a higher calorific value. This means that when propane is burned, it releases more heat energy compared to natural gas. Propane also has a higher energy density, meaning that a smaller volume of propane contains more energy than the same volume of natural gas. Therefore, propane is considered to have more potential energy than natural gas.

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  • 29. 

    What is the one deal breaker regarding operating a blower door according to BPI standards?

    • Elderly people inside the home

    • Presence of asbestos

    • Exposed insulation

    • There are no deal breakers

    Correct Answer
    A. Presence of asbestos
    Explanation
    According to BPI standards, the presence of asbestos is the one deal breaker regarding operating a blower door. Asbestos is a hazardous material that can cause serious health issues when disturbed. Therefore, if asbestos is present in a home, it is essential to address it before conducting a blower door test to ensure the safety of the occupants and prevent the spread of asbestos fibers.

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  • 30. 

    What can negative pressures inside the home cause?

    • Draw in unhealthy air from the crawlspace

    • Cause flame rollout on combustion appliances

    • Pull in harmful fumes from the garage

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Negative pressures inside the home can cause a variety of issues. They can draw in unhealthy air from the crawlspace, which can be detrimental to the indoor air quality. Additionally, negative pressures can cause flame rollout on combustion appliances, which can be dangerous and lead to carbon monoxide poisoning. Furthermore, negative pressures can pull in harmful fumes from the garage, introducing potentially toxic substances into the living space. Therefore, all of the given options are correct.

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  • 31. 

    Determining the required whole-building ventilation rate is done with this calculation: (0.03 x conditioned floor area) + (7.5 x (number of bedrooms + 1)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given calculation is used to determine the required whole-building ventilation rate. It takes into account the conditioned floor area and the number of bedrooms in the building. The result of the calculation will provide the necessary ventilation rate for the building. Therefore, the statement is true.

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  • 32. 

    If there is an operable window in a bathroom, 20 cfm may be subtracted as a credit if the bathroom exhaust fan does not draw the required cfm.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    If there is an operable window in a bathroom, it can provide natural ventilation and reduce the need for the bathroom exhaust fan to draw the required cfm (cubic feet per minute) of air. In this case, a credit of 20 cfm can be subtracted, meaning that the exhaust fan does not need to provide as much airflow. This statement suggests that if there is a window in the bathroom, the exhaust fan may not need to work as hard to maintain proper ventilation. Therefore, the statement is true.

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  • 33. 

    How much air must a kitchen exhaust fan draw?

    • 100 cfm

    • 50 cfm

    • 100 (with a 20 cfm credit for an operable window)

    • Both A and C are correct

    Correct Answer
    A. Both A and C are correct
    Explanation
    Both A and C are correct because a kitchen exhaust fan must draw a minimum of 100 cfm (cubic feet per minute) of air to effectively remove cooking odors, smoke, and grease particles. However, if there is an operable window in the kitchen, a credit of 20 cfm is given, meaning the fan only needs to draw 80 cfm in this case.

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  • 34. 

    How does positive (supply) ventilation work?

    • A fan exhausts air outside the building which pulls air inside

    • A designed air inlet is created in the return to allow a designated amount of fresh air to be pulled into the air handler

    • A balance of air streams is achieved into and out of the home

    • A fan pushes air out of the building

    Correct Answer
    A. A designed air inlet is created in the return to allow a designated amount of fresh air to be pulled into the air handler
    Explanation
    Positive (supply) ventilation works by creating a designed air inlet in the return, which allows a designated amount of fresh air to be pulled into the air handler. This process helps to maintain a balance of air streams into and out of the home, ensuring that fresh air is continuously brought in and stale air is exhausted. This method helps to improve indoor air quality by providing a constant supply of fresh air and removing pollutants and odors from the building.

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  • 35. 

    A whole-building ventilation system may run intermittently, as long as the fan and controls can provide the required average cfm at least once in every three hour period.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A whole-building ventilation system is designed to provide fresh air to the entire building. It is not necessary for the system to run continuously; it can run intermittently as long as it can provide the required average cubic feet per minute (cfm) at least once in every three-hour period. This allows for flexibility in operation and energy conservation while still ensuring that the building receives an adequate supply of fresh air. Therefore, the statement is true.

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  • 36. 

    Mechanical ventilation systems must be tested for airflow after installation.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Mechanical ventilation systems must be tested for airflow after installation to ensure that they are functioning properly and providing adequate ventilation to the space. This testing is important to verify that the system is able to deliver the required amount of fresh air and remove stale air effectively. It also helps identify any issues or deficiencies in the system that may need to be addressed. Testing the airflow is a crucial step in the commissioning process of mechanical ventilation systems.

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  • 37. 

    BPI requires a technician to investigate for plumbing leaks, improperly installed gutters and downspouts, mold and mildew, and flashing details. 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because BPI (Building Performance Institute) requires a technician to investigate various issues related to plumbing leaks, improperly installed gutters and downspouts, mold and mildew, and flashing details. These issues can impact the overall performance and efficiency of a building, so it is important for technicians to identify and address them.

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  • 38. 

    When assessing the building enclosure, detailed measurements of components and insulation levels are optional.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement suggests that when assessing the building enclosure, detailed measurements of components and insulation levels are not necessary. This implies that these measurements are not mandatory and can be skipped during the assessment process.

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  • 39. 

    When evaluating air leakage with a blower door, testing must be conducted in accordance with which method?

    • ANSI/ASTM E-779-10 Standard Test Method for Determining Air Leakage Rate by Fan Pressurization

    • CAN-CGSB 149-0010-1986 Determination of the Airtightness of Building Envelopes by the Fan Depressurization Method

    • Section 802 of the RESNET Mortgage Industry National Home Energy Rating System Standards

    • All of the above standards are acceptable methods

    Correct Answer
    A. All of the above standards are acceptable methods
    Explanation
    The correct answer is "all of the above standards are acceptable methods." This means that when evaluating air leakage with a blower door, testing can be conducted in accordance with any of the mentioned methods: ANSI/ASTM E-779-10, CAN-CGSB 149-0010-1986, or Section 802 of the RESNET Mortgage Industry National Home Energy Rating System Standards. All of these standards are considered acceptable and valid for determining air leakage rate using fan pressurization or depressurization methods.

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  • 40. 

    Which is NOT a by-product of combustion?

    • CO2

    • Water vapor

    • Titanium tetrachloride

    • Light

    Correct Answer
    A. Titanium tetrachloride
    Explanation
    Titanium tetrachloride is not a by-product of combustion. Combustion is a chemical reaction that typically involves the reaction of a fuel with oxygen to produce heat, light, and various by-products such as carbon dioxide (CO2) and water vapor. Titanium tetrachloride, on the other hand, is a compound that is not typically formed during combustion reactions. It is commonly used in industrial processes and as a precursor for the production of titanium metal.

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  • 41. 

    What is the BTU content of a therm of natural gas?

    • 92,000

    • 140,000

    • 3,412

    • 100,000

    Correct Answer
    A. 100,000
    Explanation
    The BTU content of a therm of natural gas is 100,000.

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  • 42. 

    Which is NOT a definition of a class 1 heating system?

    • Natural draft

    • Fan induced draft

    • Sealed combustion draft

    • Atmospheric draft

    Correct Answer
    A. Sealed combustion draft
    Explanation
    A class 1 heating system is defined by its draft type, which refers to how air is supplied to the combustion process. Natural draft, fan induced draft, and atmospheric draft are all examples of class 1 heating systems as they rely on ambient air for combustion. However, a sealed combustion draft is not a definition of a class 1 heating system. Sealed combustion draft refers to a system where the combustion process is completely sealed off from the living space, ensuring safety and efficiency.

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  • 43. 

    BPI requires a technician to locate and record temperature rise and total external static pressure.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because BPI (Building Performance Institute) does require a technician to locate and record temperature rise and total external static pressure. These measurements are important in assessing the performance of a building's HVAC system and ensuring it is operating efficiently. By measuring temperature rise, technicians can determine if the system is heating or cooling the air properly. Total external static pressure is measured to assess the resistance to airflow in the system, which can affect its efficiency.

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  • 44. 

    What must a technician do before entering a building according to BPI?

    • A thorough walk around the entire buidling

    • Turn on combustible gas detector

    • Both B and D are correct

    • Turn on a carbon monoxide monitor

    Correct Answer
    A. Both B and D are correct
    Explanation
    According to BPI, before entering a building, a technician must both turn on a combustible gas detector and a carbon monoxide monitor. This is important to ensure the safety of the technician and to detect any potential hazards such as gas leaks or high levels of carbon monoxide.

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  • 45. 

    It is easier to vent combustion gases in a home in Alaska than in Florida.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In Alaska, it is easier to vent combustion gases in a home compared to Florida because the colder temperatures in Alaska create a stronger draft. This draft helps to efficiently remove the combustion gases from the home, preventing the buildup of harmful gases. In contrast, the warmer temperatures in Florida can create weaker drafts, making it more challenging to effectively vent combustion gases.

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  • 46. 

    Low concentrations of CO exposure will cause what symptoms?

    • Shortness of breath

    • Mild headaches

    • Mild nausea

    • All of the above are correct

    Correct Answer
    A. All of the above are correct
    Explanation
    Low concentrations of CO exposure can cause symptoms such as shortness of breath, mild headaches, and mild nausea. Carbon monoxide (CO) is a colorless and odorless gas that can be harmful when inhaled. Even at low levels, it can interfere with the oxygen-carrying capacity of the blood, leading to difficulty in breathing and reduced oxygen supply to the body. Headaches and nausea are common symptoms of CO poisoning, especially when exposed to low levels for a prolonged period. Therefore, all of the above symptoms are correct for low concentrations of CO exposure.

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  • 47. 

    Where does dilution air join the combustion air byproducts?

    • Draft diverter

    • Combustion appliance zone

    • Exhaust vent hood

    • Inside the heat exchanger

    Correct Answer
    A. Draft diverter
    Explanation
    The dilution air joins the combustion air byproducts at the draft diverter. A draft diverter is a device that is installed in the flue pipe of a combustion appliance to divert the exhaust gases and allow for the entry of dilution air. This helps to maintain proper combustion and prevent the buildup of harmful gases inside the appliance.

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  • 48. 

    How does a forced air distribution system work?

    • Natural convection circulates air throughout the home

    • A blower moves air through the ductwork and delivers it to the home

    • A standard pump moves air through piping and circulates it throughout the home

    • Air flows through ductwork using gravity to deliver air throughout the home

    Correct Answer
    A. A blower moves air through the ductwork and delivers it to the home
    Explanation
    A forced air distribution system works by using a blower to move air through the ductwork and deliver it to the home. This means that the system does not rely on natural convection or gravity to circulate air, but rather uses a mechanical device to force the air movement. The blower creates a continuous flow of air, allowing for efficient distribution throughout the home.

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  • 49. 

    When measuring CO, actions in response to CO measurements shall be taken in accordance with which organizations standards?

    • National Oilheat Research Alliance

    • ANSI/BSR Z223.1/NFPA 54 National Fuel Gas Code

    • NFPA 211 Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances

    • US Consumer Products Safety Commission (CPSC)

    Correct Answer
    A. NFPA 211 Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances
    Explanation
    The actions in response to carbon monoxide (CO) measurements are typically guided by the standards outlined in NFPA 211: Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances. This standard provides guidelines for the safe installation, maintenance, and operation of various heating appliances to minimize the risks associated with the release of CO and other combustion byproducts.

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Quiz Review Timeline (Updated): Nov 6, 2024 +

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  • Current Version
  • Nov 06, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 07, 2014
    Quiz Created by
    Alexglenn

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