The Building & Utilities Maintenance Quiz

The correct answer is "Lift" because a lift is another name for a passenger elevator. A lift is a vertical transportation device that moves people or goods between floors or levels within a building. It is commonly used in residential and commercial buildings to provide convenient and efficient transportation.

An automatic transfer switch is a device that is used to transfer power from a standby generator to the building circuitry during a power failure. It is typically a double throw switch with a 3-pole connection. The switch automatically detects when the main power source fails and switches the power supply to the generator. This ensures a seamless transition of power without any interruption to the building's electrical supply.

A lawn sprinkler system is a system of devices that are installed below ground level and are used to scatter or spray water droplets over a lawn, golf course, or similar areas. It is designed to efficiently distribute water and maintain the health and appearance of the grass or plants. This system is commonly used for irrigation purposes and helps to automate the process of watering the lawn, saving time and effort for the user.

Infrared is another type of flame detector that is different from the ultraviolet type. Infrared flame detectors work by detecting the heat radiation emitted by flames. They are able to detect flames even in the presence of other sources of light, making them effective in various environments. This type of flame detector is commonly used in industrial settings and can be a reliable method for fire detection and prevention.

The minimum width of a septic tank is 90 cm. This width is necessary to ensure that the tank has enough space to effectively hold and treat wastewater. A wider tank allows for better distribution and settling of solids, which is essential for proper functioning. A narrower tank may not provide enough room for effective treatment, leading to potential issues with the septic system. Therefore, a width of 90 cm is the correct answer.

An escutcheon is a type of flange that is used to cover a hole or opening in a floor or wall through which a pipe passes. It provides a decorative and protective cover for the opening, ensuring that it is sealed and preventing any leaks or damage.

A thermostat is an instrument that responds to changes in temperature and directly or indirectly controls temperature. It is commonly used in heating and cooling systems to maintain a desired temperature by turning on or off the heating or cooling device. The thermostat measures the current temperature and compares it to the desired temperature set by the user. If the current temperature is lower than the desired temperature, the thermostat will activate the heating device. If the current temperature is higher than the desired temperature, the thermostat will activate the cooling device. Therefore, a thermostat is an instrument that helps regulate and control temperature.

A sheave is an assembly consisting of a pulley wheel, side plates, shaft, and bearings over which a cable or rope is passed. It is used to change the direction or transmit power in a system. In this context, the correct answer is sheave because it accurately describes the assembly mentioned in the question.

A flash valve is a type of valve used in a flush tank to control the flushing of a fixture. It allows water to quickly flow into the tank when the flush lever is pressed, causing the tank to empty and flush the fixture. Once the tank is empty, the flash valve closes to stop the flow of water. This ensures that the fixture is effectively flushed and the tank is ready for the next use.

A governor is a device that is designed to stop an elevator. It consists of a flyball or flyweight device that is connected to the elevator system. When the elevator exceeds a certain speed, the flyball or flyweight device activates and causes the governor to engage, which then stops the elevator. This is an important safety feature in elevators to prevent them from running too fast and potentially causing accidents.

The minimum trap diameter for a shower stall is 2" dia. This means that the diameter of the trap, which is the curved section of the drain pipe that prevents sewer gases from entering the bathroom, should be at least 2 inches. A larger diameter trap would be more effective in preventing clogs and allowing water to flow smoothly.

Carbon monoxide is not a component of a fire extinguisher. Fire extinguishers typically contain substances such as water, foam, dry chemical powder, or carbon dioxide. Carbon monoxide is a toxic gas that is produced during incomplete combustion and is not used in fire extinguishers.

Latent heat refers to the amount of heat absorbed or evolved when a substance changes its state without changing its temperature. This means that even though the temperature remains constant, there is a transfer of heat energy during a change from one state to another, such as from solid to liquid or liquid to gas. Latent heat is an important concept in understanding phase changes and is used in various applications, such as in refrigeration and climate control systems.

A humidistat is a device that is sensitive to the degree of moisture in the air. It is used to control the humidity levels in a space by turning on or off a humidifier or dehumidifier. This device is commonly used in homes, offices, and other environments where maintaining a specific level of humidity is important for comfort and health. Unlike a barometer, which measures atmospheric pressure, a thermostat, which controls temperature, and a hydrostat, which measures water pressure, a humidistat specifically measures and controls humidity levels.

The maximum length of the tailpiece from any fixture is 60 mm.

The collection line of a plumbing system is referred to as the house drain. This is the pipe that collects wastewater from various fixtures in a house and carries it to the main sewer or septic tank. It is an essential component of the plumbing system as it ensures the proper disposal of wastewater from the house.

The minimum length of a septic tank should be 1.5 meters. This length is necessary to ensure that the tank has enough capacity to effectively treat and store wastewater. A septic tank needs to have sufficient volume to allow for the settling of solids and the separation of liquids. A tank that is too short may not provide enough time for the solids to settle, leading to clogging and potential system failure. Therefore, a length of 1.5 meters is recommended to ensure proper functioning of the septic tank.

The developed length refers to the total length of a pipe or fitting when it is laid out in a straight line. It takes into account the length along the centerline of the pipe and fitting, including any bends or curves. This measurement is important for determining the amount of material needed for installation and for calculating pressure drop in the system.

The minimum distance of a water supply well from a septic tank is 15.2 m. This is important to prevent contamination of the water supply by harmful bacteria and pathogens present in the septic tank. A distance of 15.2 m ensures that there is a sufficient buffer zone between the two to reduce the risk of contamination and maintain the safety and quality of the water supply.

A burr is a rough or sharp edge that is left on metal after it has been cut with a tool. This can occur when the cutting tool does not make a clean and smooth cut, resulting in a jagged edge. The presence of a burr can affect the quality and functionality of the metal piece, and it may need to be removed or smoothed out for a better finish.

No. 12 wire is the correct answer for the standard size of wire for a circuit line. The gauge number of a wire determines its size, with a lower gauge number indicating a larger wire size. No. 12 wire is commonly used for residential electrical circuits and can handle a maximum current of 20 amps. It is suitable for most household appliances and lighting circuits.

Sewage refers to any liquid waste that contains animal or vegetable matter in suspension or solution. This can include wastewater from toilets, sinks, showers, and other sources. Sewage may also contain other contaminants such as chemicals, bacteria, and viruses. Therefore, sewage is the correct answer for the given description.

The maximum liquid depth for a septic tank is 1.8 meters. This means that the liquid level inside the tank should not exceed 1.8 meters in order to prevent any overflow or leakage. Maintaining the liquid level below this limit ensures proper functioning of the septic tank and prevents any potential damage or contamination.

A relief vent is a vent that is designed to provide circulation of air between the drainage and vent system. It helps to prevent pressure buildup and allows for proper drainage flow. This type of vent is commonly used in plumbing systems to ensure that there is no blockage or restriction in the flow of air and water.

The minimum extension of the VSTR above the roof is 15 cm. This means that the VSTR should extend at least 15 cm above the roof in order to meet the required specifications.

The correct answer is capacitor. A capacitor is an electronic component that stores electrical energy in an electric field. The unit of capacity for a capacitor is measured in Farads (F). Therefore, Farad is the unit capacity of a capacitor.

A corporation stop is a type of stop valve that is placed in the service pipe close to the connection at the water main. It is used to control the flow of water and is typically installed by the water utility company. The corporation stop allows for easy access and maintenance of the water supply, making it a convenient option for controlling the water flow in the service pipe.

The maximum height of a dumbwaiter is 1.2 m.

The minimum face to face distance between elevators in three and four car grouping is 2.0 m. This means that the distance between the elevators should be at least 2.0 meters in order to ensure safety and ease of movement for passengers. A greater distance may be required for larger groupings of elevators to allow for more space between them.

The standard length of an electrical metal conduit is 10 feet.

The minimum extension of the VSTR above an openable window, door opening, air intake, or vent shaft is .9 m. This means that the VSTR should extend at least .9 meters above these openings to ensure proper ventilation and prevent any obstruction or blockage of airflow.

The minimum liquid depth of a septic tank should be 60 cm. This depth is necessary to ensure proper functioning of the tank and allow for the separation of solids and liquids. A depth of 60 cm allows for sufficient settling and decomposition of solids, while still providing enough liquid capacity for the tank to effectively hold and treat wastewater. A lower depth may result in inadequate treatment and potential issues with the tank's performance.

The minimum distance of a water supply well from a disposal field is 30.5 m. This distance is necessary to prevent contamination of the water supply from the waste in the disposal field. A greater distance ensures that any potential pollutants or pathogens in the waste have enough time and distance to be naturally filtered or diluted before reaching the water supply. Therefore, a minimum distance of 30.5 m is required to maintain the safety and quality of the water supply.

Specific lighting refers to a type of lighting that is designed to provide illumination to special objects like sculptures, flower arrangements, etc. It is used to highlight and draw attention to these objects, creating a focal point or enhancing their visual appeal. Unlike general lighting, which provides overall illumination to a space, specific lighting is targeted and focused on specific areas or objects. It is often used in galleries, museums, or any space where special objects need to be highlighted or showcased.

Rigid board insulation is the correct answer because it is a type of thin sheet that is commonly used for controlling heat in drywall construction. It is typically made from materials such as foam or fiberglass and is installed between the drywall and the wall studs to provide thermal insulation. This helps to regulate the temperature and reduce heat transfer, making the building more energy-efficient.

The maximum height of a water seal for each fixture trap is 102 mm. This means that the water level in the trap cannot rise higher than 102 mm before it creates a seal that prevents sewer gases from entering the building. This is an important requirement for plumbing systems to ensure the health and safety of occupants.

A rectifier is a device that converts alternating current (AC) to direct current (DC). It does this by using diodes to allow current to flow in only one direction. The diodes act as a one-way valve, allowing the positive half of the AC waveform to pass through while blocking the negative half. This results in a pulsating DC output, which can then be smoothed out using capacitors to create a more constant DC voltage. Rectifiers are commonly used in power supplies and electronic devices that require DC power.

The minimum dimension of a manhole access to a septic tank is 508 mm. This dimension is necessary to ensure that a person can safely enter and exit the septic tank for maintenance and cleaning purposes. A larger dimension would provide more space for maneuverability, while a smaller dimension would restrict access and make it difficult for a person to enter or exit the tank. Therefore, 508 mm is the correct minimum dimension for a manhole access to a septic tank.

The minimum trap diameter for a bathtub is 1 1/2" dia. This means that the diameter of the trap, which is the curved portion of the drainpipe that prevents sewer gases from entering the bathroom, should be at least 1 1/2 inches. This is the correct answer because it meets the necessary requirements for a bathtub trap.

No. 14 is the correct answer because it refers to the standard wire size for a switch line. The wire size is measured using the American Wire Gauge (AWG) system, where a smaller number indicates a larger wire size. Therefore, No. 14 wire is thicker and can handle more electrical current than the other options listed. This makes it suitable for use in switch lines, which typically require a higher current capacity.

The minimum height of a water seal for each fixture trap is 51 mm. This is the measurement required to ensure that there is enough water in the trap to create a seal and prevent sewer gases from entering the building. A water seal is necessary to maintain proper plumbing function and protect the health and safety of occupants.

The term "phase" refers to the relationship between the voltage and current waveforms in an AC circuit. It describes how the voltage and current are aligned with each other in terms of their peaks and zero crossings. In a circuit with a purely resistive load, the voltage and current waveforms are in phase, meaning they reach their peaks and zero crossings at the same time. However, in circuits with inductive or capacitive loads, the voltage and current waveforms can be out of phase. Therefore, understanding the phase relationship between voltage and current is crucial in analyzing AC circuits.

A thermosetting material, such as synthetic resin, hardens when heated or cured and does not soften when reheated. This means that once it is formed into a specific shape, it cannot be reshaped or melted again. This property makes thermosetting materials suitable for applications where durability and stability are required, such as in electrical insulation or in the production of durable plastic products.

The minimum length of the secondary compartment of a septic tank with a capacity of more than 6 cubic meters is 1.5 meters. This length is necessary to ensure proper settling and separation of solids from the wastewater. A longer secondary compartment allows for more time for the solids to settle, improving the overall efficiency of the septic tank system.

The minimum gauge of galvanized sheet used for downspouts is 26. The gauge refers to the thickness of the sheet, with a higher gauge indicating a thinner sheet. Therefore, a higher gauge would not be suitable for downspouts as they need to be strong and durable to handle the flow of water. A lower gauge, such as 26, would provide the necessary strength and durability for downspouts.

The minimum elevator width for a single slide door elevator in small commercial or residential buildings is 0.6 m. This width allows for enough space for people to comfortably enter and exit the elevator, while also accommodating any necessary equipment or mobility aids. It is important to have a minimum width to ensure the safety and accessibility of the elevator for all users.

The correct answer is 1 cum. This means that the minimum capacity of the secondary compartment of a septic tank should be 1 cubic meter. This is important because the secondary compartment is responsible for the further treatment and settling of the wastewater before it is discharged. Having a minimum capacity ensures that there is enough space for this treatment process to occur effectively.

The minimum distance of a water supply well from a seepage pit or cesspool should be 45.7 m. This distance is necessary to prevent any contamination of the water supply from the seepage pit or cesspool, which could contain harmful bacteria or chemicals. It is important to maintain a safe distance to ensure the water supply remains clean and safe for consumption.

An AC generator, also known as an alternator, is a device that converts mechanical energy into alternating current (AC) electrical energy. It operates on the principle of electromagnetic induction, where a rotating magnetic field induces an alternating voltage in a coil of wire. A rectifier, on the other hand, is a device that converts AC to direct current (DC). Therefore, the correct answer is not a rectifier, but an AC generator, as it is another name for it.

The term "power panel" is another name for a distribution panel, which is used to distribute electrical power to various circuits and devices within a building or facility. It is responsible for controlling and protecting the flow of electricity, and it typically contains circuit breakers or fuses. The other options listed (panel board, power board, and outlet) do not accurately describe a distribution panel.