Fire Inspection & Code Enforcement Chapt. 8
Fire inspector 1 quiz questions - Chapt 8 - 7th edition
Questions and Answers
- 1.
What entity charters a public water system to provide service to a community or area?
- A.
State or local government
- B.
Environmental Protection Agency
- C.
Natural Resources Conservation Service
Correct Answer
A. State or local governmentExplanation
The correct answer is state or local government. State or local governments are responsible for chartering public water systems to provide service to a community or area. They oversee the regulation and management of these systems to ensure safe and reliable water supply for the public. The Environmental Protection Agency (EPA) and Natural Resources Conservation Service (NRCS) may have roles in regulating and providing guidance to these systems, but the ultimate authority lies with the state or local government.Rate this question:
-
- 2.
The 2 basic types of water supply distribution systems are public and ______ systems.
- A.
Private
- B.
For-profit
- C.
Military
Correct Answer
A. PrivateExplanation
Private water supply distribution systems refer to systems that are owned and operated by private entities or individuals. These systems are not controlled or regulated by the government or public authorities. In contrast, public water supply distribution systems are owned and operated by the government or public entities and are typically regulated for the benefit of the general public. The answer "private" accurately completes the sentence by providing the opposite term to "public."Rate this question:
-
- 3.
Which of the following components of an effective public water supply distribution system involves water pumps?
- A.
Water supply source
- B.
Distribution system
- C.
Means of moving the water
Correct Answer
C. Means of moving the waterExplanation
The means of moving the water refers to the component of an effective public water supply distribution system that involves water pumps. Water pumps are used to transport water from the water supply source to the distribution system, ensuring that water reaches its intended destination efficiently and effectively.Rate this question:
-
- 4.
Which of the following is the primary source of water in North America?
- A.
Aquifers
- B.
Groundwater
- C.
Water from the ocean
Correct Answer
B. GroundwaterExplanation
Groundwater is the primary source of water in North America because it is found in underground aquifers and provides a significant portion of the region's water supply. Aquifers are underground layers of porous rock or sediment that hold and transmit water, making them a crucial source for groundwater. While water from the ocean can be desalinated and used as a source of freshwater, it is not considered the primary source in North America. Therefore, groundwater is the correct answer.Rate this question:
-
- 5.
Which of the following is a source of water that is removed through wells equipped with pumps or from springs?
- A.
Aquifers
- B.
Groundwater
- C.
Water from the ocean
Correct Answer
A. AquifersExplanation
Aquifers are underground layers of permeable rock or sediment that contain water. Wells equipped with pumps or springs can extract water from these aquifers. Groundwater refers to the water that is stored and flows within the aquifers. Water from the ocean is not a source of water that is removed through wells or springs.Rate this question:
-
- 6.
A system that delivers water from the source or treatment plant to the distribution system without pumping equipment is known as a _______ system.
- A.
Gravity
- B.
Pumpless
- C.
Combination
Correct Answer
A. GravityExplanation
A system that delivers water from the source or treatment plant to the distribution system without pumping equipment is known as a gravity system. In this type of system, the water flows naturally due to the force of gravity, relying on elevation differences and the slope of the pipelines to move the water from higher to lower areas. This eliminates the need for pumps, making it a cost-effective and energy-efficient method of water distribution.Rate this question:
-
- 7.
What forces the water through the distribution system in a system that uses a gravity water tank?
- A.
Pumps
- B.
Elevation pressure
- C.
Reverse water pressure
Correct Answer
B. Elevation pressureExplanation
In a system that uses a gravity water tank, the water is forced through the distribution system by elevation pressure. This means that the water flows downwards due to the force of gravity, creating pressure that pushes the water through the pipes and towards the desired outlets. No pumps or reverse water pressure are needed in this type of system, as the natural force of gravity is sufficient to move the water.Rate this question:
-
- 8.
What system do most communities use as a means of moving water?
- A.
Gravity system
- B.
Pumpless system
- C.
Combination system
Correct Answer
C. Combination systemExplanation
Most communities use a combination system as a means of moving water. This is because a combination system allows for both gravity and pump-based methods to be utilized. Gravity systems rely on the natural downward flow of water, while pump systems use mechanical devices to move water against gravity. By combining these two methods, communities can ensure a reliable and efficient water supply, as they can take advantage of gravity when possible and use pumps when necessary.Rate this question:
-
- 9.
Which of the following terms describes the interlocking network of water mains that compose of water distribution system?
- A.
Web
- B.
Grid
- C.
Path
Correct Answer
B. GridExplanation
The term "grid" accurately describes the interlocking network of water mains that make up a water distribution system. A grid refers to a network of interconnected lines or pathways that form a pattern. In the context of a water distribution system, the mains are laid out in a grid-like pattern to efficiently distribute water to various locations. This term accurately captures the structure and organization of the water distribution system.Rate this question:
-
- 10.
The type of water mains in a distribution system that have relatively widespread spacing and convey large quantities of water to various points in the distribution system are:
- A.
Distributors
- B.
Primary feeders
- C.
Secondary feeders
Correct Answer
B. Primary feedersExplanation
Primary feeders are the type of water mains in a distribution system that have relatively widespread spacing and convey large quantities of water to various points in the distribution system. They are responsible for delivering water from the water source or treatment plant to the secondary feeders, which then distribute the water to smaller distributors. Primary feeders play a crucial role in ensuring that sufficient water is supplied to meet the demand of the distribution system.Rate this question:
-
- 11.
The type of water mains in a distribution system that are 12 to 14 inches in diameter and can be isolated by control valves are:
- A.
Distributors
- B.
Primary feeders
- C.
Secondary feeders
Correct Answer
C. Secondary feedersExplanation
Secondary feeders are the type of water mains in a distribution system that are 12 to 14 inches in diameter and can be isolated by control valves. Distributors and primary feeders are not the correct answers as they do not meet the criteria mentioned in the question.Rate this question:
-
- 12.
The type of water mains in a distribution system that serve individual fire hydrants and commercial and residential consumers are:
- A.
Distributors
- B.
Primary feeders
- C.
Secondary feeders
Correct Answer
A. DistributorsExplanation
Distributors are the type of water mains in a distribution system that serve individual fire hydrants and commercial and residential consumers. These water mains are responsible for delivering water to specific locations, such as hydrants and consumers, ensuring that they have access to water for their needs. Primary feeders, on the other hand, are larger mains that distribute water to multiple distributors, while secondary feeders further distribute water from distributors to smaller service lines. However, in this case, the correct answer is distributors as they directly serve fire hydrants and consumers.Rate this question:
-
- 13.
What is the MOST likely size of primary feeders in a water distribution system?
- A.
10 to 12 inches
- B.
12 to 14 inches
- C.
16 to 72 inches
Correct Answer
C. 16 to 72 inchesExplanation
The most likely size of primary feeders in a water distribution system is 16 to 72 inches. This range of sizes allows for a sufficient flow of water to meet the demands of the distribution system. Larger pipes are typically used for primary feeders to ensure that an adequate volume of water can be delivered to various areas of the system. Smaller pipe sizes may be used for secondary or tertiary feeders, but primary feeders generally require larger pipes to accommodate the higher flow rates.Rate this question:
-
- 14.
Which of the following statements about the grid or loop water distribution system is MOST accurate?
- A.
High demand in one area does not reduce water flow in other areas
- B.
When pipes or the grid must be repaired, constant pressure is lost
- C.
High demand in one area automatically reduces water flow in other areas
Correct Answer
A. High demand in one area does not reduce water flow in other areasExplanation
The correct answer is "high demand in one area does not reduce water flow in other areas." This means that even if there is a high demand for water in a specific area, the water flow in other areas will not be affected or reduced. This suggests that the grid or loop water distribution system is designed in such a way that it can handle high demand without compromising the water flow in other areas.Rate this question:
-
- 15.
Which of the following statements about storage tanks is MOST accurate?
- A.
The lower the tank, the more elevation head pressure generated.
- B.
The higher the tank, the more elevation head pressure generated.
- C.
Elevation head pressure can be increased by using smaller tanks
Correct Answer
B. The higher the tank, the more elevation head pressure generated.Explanation
The statement "the higher the tank, the more elevation head pressure generated" is the most accurate because elevation head pressure is directly proportional to the height of the tank. As the tank's height increases, the pressure exerted by the weight of the liquid inside the tank also increases. This increased pressure can be utilized for various purposes such as pumping water to higher levels or providing a steady flow of liquid in a system. Therefore, a higher tank will generate more elevation head pressure compared to a lower tank.Rate this question:
-
- 16.
How often should control valves be exercised to ensure they are in good working condition?
- A.
Once a month
- B.
Once every six months
- C.
At least once a year
Correct Answer
C. At least once a yearExplanation
Control valves should be exercised at least once a year to ensure they are in good working condition. Regular exercising helps to prevent valve sticking, corrosion, and buildup of debris, ensuring that the valves operate smoothly and accurately. It also helps to identify any potential issues or malfunctions early on, allowing for timely maintenance or repairs. By exercising control valves annually, the risk of valve failure or malfunction is minimized, ensuring the efficient and reliable operation of the system they are a part of.Rate this question:
-
- 17.
What is the maximum length for valve spacing in high-value districts as recommended by Commercial Risk Services, Inc.?
- A.
200 feet
- B.
300 feet
- C.
500 feet
Correct Answer
C. 500 feetExplanation
Commercial Risk Services, Inc. recommends a maximum length of 500 feet for valve spacing in high-value districts. This means that valves should be placed no more than 500 feet apart from each other in these districts. This spacing allows for efficient and effective control of water flow and pressure in case of emergencies or maintenance needs. It ensures that valves are easily accessible and can be operated promptly when required.Rate this question:
-
- 18.
The two broad categories of control valves are:
- A.
Automatic and manual
- B.
Primary and secondary
- C.
Indicating and nonindicating
Correct Answer
C. Indicating and nonindicatingExplanation
The correct answer is indicating and nonindicating. Control valves can be categorized into two broad categories based on their ability to indicate the position of the valve. Indicating control valves have a visual indicator that shows the position of the valve, allowing operators to easily determine whether the valve is open or closed. Nonindicating control valves do not have this visual indicator, making it more difficult for operators to determine the valve position visually.Rate this question:
-
- 19.
Valves in public water systems are usually:
- A.
Automatic
- B.
Indicating
- C.
Nonindicating
Correct Answer
C. NonindicatingExplanation
Valves in public water systems are typically nonindicating. This means that they do not have any built-in mechanisms or features to indicate their position or status. Nonindicating valves require manual inspection or monitoring to determine whether they are open or closed. This is in contrast to indicating valves, which have visual indicators or other mechanisms to show their position. Automatic valves, on the other hand, are designed to open or close automatically based on certain conditions or signals, but this is not the typical type of valve used in public water systems.Rate this question:
-
- 20.
Which of the following types of control valves has a solid plate operated by a handle and screw mechanism and when the valve nut is turned, the gate either rises or lowers to control the water flow?
- A.
Gate valve
- B.
Butterfly valve
- C.
Backflow valve
Correct Answer
A. Gate valveExplanation
A gate valve has a solid plate that is operated by a handle and screw mechanism. When the valve nut is turned, the gate either rises or lowers to control the water flow. This type of valve is commonly used in applications where a straight-line flow of fluid and minimum restriction is desired. Gate valves are typically used in pipelines that carry liquids or gases at high pressure and temperature, as they provide a tight seal and excellent shut-off capabilities.Rate this question:
-
- 21.
Which of the following types of control valves uses a flat circular plate in a pipe that rotates 90 degrees across the cross section of the pipe to control the flow of water?
- A.
Gate valve
- B.
Butterfly valve
- C.
Backflow valve
Correct Answer
B. Butterfly valveExplanation
A butterfly valve is a type of control valve that uses a flat circular plate in a pipe. This plate, known as the disc or the butterfly, is mounted on a rod and rotates 90 degrees across the cross section of the pipe to control the flow of water. When the disc is parallel to the flow, the valve is fully open, and when it is perpendicular to the flow, the valve is fully closed. By adjusting the angle of the disc, the flow rate can be controlled at any desired level.Rate this question:
-
- 22.
Which of the following devices determines the quantity of water that the facility is using for billing purposes?
- A.
Primary water
- B.
Indicating charger
- C.
Water flowmeter
Correct Answer
C. Water flowmeterExplanation
A water flowmeter is a device used to measure the quantity of water flowing through a pipe or system. In the context of billing purposes, a water flowmeter is essential as it accurately determines the amount of water being consumed by a facility. By measuring the flow rate, it provides the necessary data for billing calculations, ensuring that the facility is charged correctly based on their water usage. Therefore, a water flowmeter is the device that determines the quantity of water used for billing purposes.Rate this question:
-
- 23.
Which of the following devices prohibits water that may be contaminated from flowing into the public water system?
- A.
Indicating charger
- B.
Water flowmeter
- C.
Backflow preventer
Correct Answer
C. Backflow preventerExplanation
A backflow preventer is a device that prevents the flow of water that may be contaminated from flowing back into the public water system. It is designed to ensure the safety and purity of the water supply by preventing any potential backflow of contaminants. This device is commonly used in plumbing systems to protect against backflow caused by backpressure or back siphonage.Rate this question:
-
- 24.
Which of the following types of fire hydrants is designed for use in climates that have freezing temperatures?
- A.
Wet-barrel
- B.
Dry-barrel
- C.
Combination barrel
Correct Answer
B. Dry-barrelExplanation
Dry-barrel fire hydrants are designed for use in climates that have freezing temperatures. Unlike wet-barrel hydrants, which have water constantly present in the barrel, dry-barrel hydrants have the water drained from the barrel after each use. This prevents the water from freezing and damaging the hydrant in freezing temperatures. Dry-barrel hydrants are commonly used in areas with cold climates to ensure that the hydrant remains operational even in freezing conditions.Rate this question:
-
- 25.
Which of the following types of fire hydrants is designed for use in mild climates where temperatures remain above freezing?
- A.
Wet-barrel
- B.
Dry-barrel
- C.
Combination barrel
Correct Answer
A. Wet-barrelExplanation
Wet-barrel fire hydrants are designed for use in mild climates where temperatures remain above freezing. In this type of hydrant, the main valve is located below the frost line and the barrel is constantly filled with water. This prevents the water from freezing and allows for quick and easy access to water in case of a fire. Dry-barrel hydrants, on the other hand, are designed for use in colder climates where freezing is a concern. Combination barrel hydrants have both wet and dry barrel features and can be used in a variety of climates.Rate this question:
-
- 26.
How often should hydrant inspections occur?
- A.
Once a year
- B.
At least twice a year
- C.
At least once every three years
Correct Answer
B. At least twice a yearExplanation
Hydrant inspections should occur at least twice a year to ensure their proper functioning and to identify any potential issues or damages. Regular inspections help in maintaining the hydrants' readiness for emergencies and ensure that they are in good working condition. By conducting inspections at least twice a year, any problems can be detected and addressed promptly, reducing the risk of failure during critical situations. This frequency of inspections allows for regular maintenance and ensures that the hydrants are always prepared to deliver water efficiently when needed.Rate this question:
-
- 27.
Hydrant discharge outlets are considered standard if they have at least one large outlet often referred to as the pumper outlet nozzle or ______ connection.
- A.
Primary
- B.
Secondary
- C.
Steamer
Correct Answer
C. SteamerExplanation
Hydrant discharge outlets are considered standard if they have at least one large outlet often referred to as the pumper outlet nozzle or steamer connection. The term "steamer" refers to a type of nozzle that is designed to deliver a high volume of water at a high pressure. This type of connection is commonly used for firefighting purposes, allowing firefighters to quickly and effectively extinguish fires. The presence of a steamer connection indicates that the hydrant is equipped to handle the demands of firefighting operations.Rate this question:
-
- 28.
The male treads on all hydrant discharge outlets must conform to those used by:
- A.
Local industries
- B.
State emergency services
- C.
Local fire department
Correct Answer
C. Local fire departmentExplanation
The male treads on all hydrant discharge outlets must conform to those used by the local fire department because they are responsible for managing and controlling fire emergencies in the area. By having standardized male treads on hydrant discharge outlets, it ensures compatibility and ease of use for the local fire department when connecting their equipment to the hydrants. This allows for efficient and effective firefighting operations during emergencies.Rate this question:
-
- 29.
For standard three-way hydrants, hydrant specifications require a _____ valve opening.
- A.
2 1/2 inch
- B.
4 inch
- C.
5 inch
Correct Answer
C. 5 inchExplanation
For standard three-way hydrants, the hydrant specifications require a 5-inch valve opening. This means that the valve inside the hydrant, which controls the flow of water, should have an opening diameter of 5 inches. This size is specified to ensure that an adequate amount of water can flow through the hydrant, allowing for effective firefighting operations.Rate this question:
-
- 30.
For connection to the water main, hydrant specifications require a _____ valve opening.
- A.
4 inch
- B.
5 inch
- C.
6 inch
Correct Answer
C. 6 inchExplanation
Hydrant specifications require a 6-inch valve opening for connection to the water main. This means that the valve opening of the hydrant should be 6 inches in diameter in order to properly connect it to the water main. This size is likely determined based on the water flow requirements and the size of the pipes used in the water main system. A larger valve opening allows for a higher flow rate and better access to the water supply in case of emergencies.Rate this question:
-
- 31.
What color designates hydrants with nonpotable water?
- A.
Red
- B.
Green
- C.
Violet
Correct Answer
C. VioletExplanation
Violet is the color that designates hydrants with nonpotable water. In many places, hydrants are color-coded to indicate the type of water they contain. Red hydrants typically indicate potable water, green hydrants are used for public water systems, and violet hydrants are specifically designated for nonpotable water sources. This color-coding system helps ensure that the correct water source is used for different purposes, preventing contamination and ensuring public safety.Rate this question:
-
- 32.
Which of the following statements about private water supply distribution systems is MOST accurate?
- A.
The design is very different from municipal distribution systems
- B.
They can always be relied upon to provide water necessary for fire protection
- C.
They maintain separate piping for fire protection and domestic or industrial services
Correct Answer
C. They maintain separate piping for fire protection and domestic or industrial servicesExplanation
Private water supply distribution systems maintain separate piping for fire protection and domestic or industrial services. This means that the water used for fire protection is separate from the water used for domestic or industrial purposes. This separation ensures that there is always a dedicated water supply available for fire protection, regardless of the demand for water in other areas.Rate this question:
-
- 33.
Which of the following water sources may be an open lake or pond or an enclosed structure and must be filtered to protect the fire-protection system?
- A.
Reservoirs
- B.
Suction tanks
- C.
Pressure tanks
Correct Answer
A. ReservoirsExplanation
Reservoirs may be an open lake or pond or an enclosed structure and must be filtered to protect the fire-protection system. This is because reservoirs can contain debris, sediments, and other contaminants that can clog or damage the fire-protection system. Filtering the water helps to remove these impurities and ensure that the water used for fire protection is clean and free from any potential obstructions.Rate this question:
-
- 34.
Which of the following water sources are located at ground level and provide a water supply source for pressure-increasing fire pumps?
- A.
Reservoirs
- B.
Suction tanks
- C.
Pressure tanks
Correct Answer
B. Suction tanksExplanation
Suction tanks are water sources located at ground level that provide a water supply source for pressure-increasing fire pumps. They are designed to draw water from a nearby water source, such as a river or lake, and supply it to the fire pump at a higher pressure. This allows the fire pump to deliver water at a greater force, enabling effective firefighting operations. Reservoirs and pressure tanks, on the other hand, are not typically located at ground level and may serve different purposes in a water supply system.Rate this question:
-
- 35.
Which of the following water sources are used to stabilize or balance the pressures on both public and private water distribution systems at times of peak demand?
- A.
Reservoirs
- B.
Pressure tanks
- C.
Gravity tanks
Correct Answer
C. Gravity tanksExplanation
Gravity tanks are used to stabilize or balance the pressures on both public and private water distribution systems at times of peak demand. Unlike reservoirs, which store large volumes of water, gravity tanks are smaller tanks located at higher elevations. They use the force of gravity to provide water pressure to the distribution system. This helps to ensure a consistent and reliable water supply during periods of high demand. Pressure tanks, on the other hand, are used to regulate and maintain pressure within the system, but they do not directly stabilize or balance the pressures during peak demand.Rate this question:
-
- 36.
Who is responsible for exercising the system control valves annually for a private fire-protection system?
- A.
Inspectors
- B.
Facility employees
- C.
Utility company employees
Correct Answer
B. Facility employeesExplanation
Facility employees are responsible for exercising the system control valves annually for a private fire-protection system. This is because facility employees are typically trained and familiar with the specific fire-protection system installed in the facility. They have the knowledge and expertise to properly operate and maintain the system, including exercising the control valves to ensure they are functioning correctly. Inspectors may conduct periodic inspections to ensure compliance and identify any issues, but the regular maintenance and operation of the system is the responsibility of facility employees. Utility company employees, on the other hand, are typically responsible for maintaining and operating utility infrastructure, such as power or water supply, and not specifically fire-protection systems.Rate this question:
-
- 37.
Small structures that contain standpipe connections and large hoselines preconnected to the discharge outlet are known as:
- A.
Warming huts
- B.
Hose houses
- C.
Point sheds
Correct Answer
B. Hose housesExplanation
Hose houses are small structures that are equipped with standpipe connections and large hoselines preconnected to the discharge outlet. These houses are specifically designed to store and protect the hoses used for firefighting purposes. They provide quick access to the hoses and ensure that they are ready for immediate use during emergencies. Hose houses are commonly found in fire stations or near fire hydrants, allowing firefighters to efficiently deploy and connect the hoses to fight fires effectively.Rate this question:
-
- 38.
Which of the following terms refers to pressure remaining at a given point in a water supply system while water is flowing?
- A.
Static pressure
- B.
Water hammer
- C.
Residual pressure
Correct Answer
C. Residual pressureExplanation
Residual pressure refers to the pressure that remains at a specific point in a water supply system while water is flowing. It is the pressure that is still present even when there is water movement within the system. Static pressure, on the other hand, refers to the pressure when there is no water flow, while water hammer refers to the sudden increase in pressure caused by the abrupt stoppage or change in flow direction of water. Therefore, residual pressure is the correct term for pressure that remains during water flow.Rate this question:
-
- 39.
Which of the following tests are made to determine the rate of fire flow available for fire suppression at various locations within the distribution system?
- A.
Fire-flow test
- B.
Control-valve test
- C.
Peak-demand test
Correct Answer
A. Fire-flow testExplanation
The fire-flow test is conducted to determine the rate of fire flow available for fire suppression at different locations within the distribution system. This test helps in assessing the water supply capacity and pressure required to effectively combat fires in different areas. By measuring the flow rate and pressure, it ensures that an adequate amount of water can be delivered to extinguish fires and protect lives and property. The control-valve test and peak-demand test are not specifically designed for this purpose, making the fire-flow test the correct answer.Rate this question:
-
- 40.
How often should fire-flow tests be performed on existing portions of the water distribution system?
- A.
At least every two years
- B.
At least every three years
- C.
At least every five years
Correct Answer
C. At least every five yearsExplanation
Fire-flow tests should be performed on existing portions of the water distribution system at least every five years. This is necessary to ensure that the system is capable of delivering the required amount of water for firefighting purposes. Regular testing helps identify any deficiencies or issues in the system that may hinder its effectiveness during emergencies. By conducting these tests every five years, any potential problems can be addressed and necessary improvements can be made to maintain the system's functionality and reliability.Rate this question:
-
- 41.
Fire hydrant inspections are generally performed:
- A.
Annually
- B.
Every two years
- C.
Every three years
Correct Answer
A. AnnuallyExplanation
Fire hydrant inspections are generally performed annually to ensure that they are in proper working condition and ready for use in case of a fire emergency. Regular inspections help identify any issues or damage to the hydrants, such as leaks or blockages, which can be promptly repaired. By conducting inspections on an annual basis, fire departments can maintain the functionality and reliability of the hydrants, ensuring the safety of the community they serve.Rate this question:
-
- 42.
Which of the following items is NOT an item needed to complete the inspection of fire hydrants?
- A.
Notebook
- B.
Gallon, jug or pail
- C.
Water steam defuser
Correct Answer
B. Gallon, jug or pailExplanation
The inspection of fire hydrants requires a notebook to record observations and findings, as well as a water steam defuser to safely release pressure from the hydrant. However, a gallon, jug, or pail is not necessary for the inspection process. It is not mentioned or implied that these items are needed to complete the inspection.Rate this question:
-
- 43.
Which of the following is an item that inspectors should observe when making hydrant inspections?
- A.
Value of surrounding property
- B.
Date hydrant was placed in service
- C.
Condition of the paint for rust or corrosion
Correct Answer
C. Condition of the paint for rust or corrosionExplanation
Inspectors should observe the condition of the paint for rust or corrosion when making hydrant inspections. This is important because the paint on a hydrant can provide protection against rust and corrosion, which can compromise the functionality and reliability of the hydrant. By checking the condition of the paint, inspectors can identify any areas that may need maintenance or repair to ensure that the hydrant remains in proper working condition.Rate this question:
-
- 44.
When inspecting fire hydrants, the inspector should ensure that the clearance between the bottom of the butt and the grade is at least:
- A.
8 inches
- B.
12 inches
- C.
15 inches
Correct Answer
C. 15 inchesExplanation
The inspector should ensure that the clearance between the bottom of the butt and the grade is at least 15 inches. This is important to ensure that there is enough space for the fire hydrant to be accessed and operated effectively in case of an emergency. A clearance of 15 inches allows for proper clearance and maneuverability for fire department personnel and equipment. It also helps prevent any obstruction or damage to the fire hydrant, ensuring its functionality when needed.Rate this question:
-
- 45.
Which of the following is the first step in the using a pitot tube and gauge?
- A.
Close the petcock and ensure that it is tightened
- B.
Read the velocity pressure reading from the gauge
- C.
Open the petcock and ensure the air chamber is drained
Correct Answer
C. Open the petcock and ensure the air chamber is drainedExplanation
The correct answer is to open the petcock and ensure the air chamber is drained. This is the first step because before using a pitot tube and gauge, it is important to make sure that the air chamber is free from any trapped air. Opening the petcock allows any air in the chamber to be released, ensuring accurate measurements of velocity pressure can be obtained from the gauge. Closing the petcock and tightening it, as well as reading the velocity pressure reading from the gauge, would be subsequent steps in the process.Rate this question:
-
- 46.
The easiest way to determine how much water is flowing from a hydrant outlet is to:
- A.
Make a best guess estimate
- B.
Use reading from similar fire-flow tests
- C.
Refer to prepared tables for nozzle/outlet discharge
Correct Answer
C. Refer to prepared tables for nozzle/outlet dischargeExplanation
The easiest way to determine how much water is flowing from a hydrant outlet is to refer to prepared tables for nozzle/outlet discharge. These tables provide specific information about the discharge rates for different types of nozzles and outlets. By consulting these tables, one can accurately determine the amount of water flowing from the hydrant outlet without the need for guesswork or relying on readings from other fire-flow tests.Rate this question:
-
- 47.
In flow formulas, the coefficient of 1.0 is assigned to an ideal frictionless discharge orifice; an actual hydrant orifice or nozzle will have:
- A.
The same coefficient of discharge
- B.
A lower coefficient of discharge
- C.
A higher coefficient of discharge
Correct Answer
B. A lower coefficient of dischargeExplanation
An actual hydrant orifice or nozzle will have a lower coefficient of discharge compared to an ideal frictionless discharge orifice. This is because real-world factors such as surface roughness, turbulence, and losses due to friction cause a decrease in the discharge coefficient. Therefore, the actual discharge from a hydrant or nozzle will be less efficient than the ideal case.Rate this question:
-
- 48.
What is the minimum required residual pressure when computing the available water for area flow-test results?
- A.
10 psi
- B.
15 psi
- C.
20 psi
Correct Answer
C. 20 psiExplanation
The minimum required residual pressure when computing the available water for area flow-test results is 20 psi. This means that in order to accurately determine the available water for the area flow-test, there must be a minimum residual pressure of 20 psi.Rate this question:
-
- 49.
The implosion of air pockets drawn into fire pumps connected to the system is referred to as:
- A.
Cavitation
- B.
Backflow
- C.
Flow voids
Correct Answer
A. CavitationExplanation
Cavitation refers to the implosion of air pockets drawn into fire pumps connected to the system. When the water pressure in the pump drops below the vapor pressure of the water, it causes the formation of air bubbles. These bubbles then collapse or implode when they reach higher pressure areas, causing damage to the pump and reducing its efficiency. Therefore, cavitation is the correct term to describe this phenomenon.Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Mar 04, 2011Quiz Created by
Tribecca09
- Abdomen Quizzes
- Addiction Quizzes
- Aging Quizzes
- Arthritis Quizzes
- Beauty Quizzes
- Blood Quizzes
- Body Quizzes
- Bone Quizzes
- Brain Quizzes
- Child Health Quizzes
- Dermatology Quizzes
- Digestive System Quizzes
- Disease Quizzes
- Fertility Quizzes
- First Aid Quizzes
- Hair care Quizzes
- Health And Nutrition Quizzes
- Health And Wellness Quizzes
- Health Policy Quizzes
- Health Psychology Quizzes
- Health Worldwide Quizzes
- Hearing Quizzes
- Heart Quizzes
- Hospital Quizzes
- Illness Quizzes
- Injury Quizzes
- Kidney Quizzes
- Liver Quizzes
- Lung Quizzes
- Mental Health Quizzes
- Nose Quizzes
- Nutrition Quizzes
- Obesity Quizzes
- Ophthalmology Quizzes
- Patient Quizzes
- Patient care Quizzes
- Pharmacy Quizzes
- Pregnancy Quizzes
- Puberty Quizzes
- Public Health Quizzes
- Respiratory System Quizzes
- Sleep Quizzes
- Stress Quizzes
- Surgery Quizzes
- Surgical Instruments Quizzes
- Throat Quizzes
- Weight Quizzes
- Wellness Quizzes
Back to top