This Quiz On Building Utilities 11 Is Only For Geniuses

Teflon is the correct answer because it was one of the first plastics to be developed in 1938. It is a trade name for a white, soft, waxy, and non-adhesive polymer of tetrafluoroethylene. Teflon is known for its non-stick properties and is commonly used in cookware and as a coating for various products.

The statement "Wooden septic tanks are allowed" is not true. Wooden septic tanks are not allowed as they are not durable and can deteriorate over time. Septic tanks are typically made of concrete, fiberglass, or plastic materials that are resistant to decay and can safely contain and treat sewage.

The weighing device in an elevator is responsible for detecting if the car is overloaded. When the car exceeds its maximum weight capacity, the weighing device triggers the buzzer alarm, alerting passengers and operators of the overloading. Additionally, the door remains open until the excess weight is removed, ensuring the safety of the elevator and its occupants.

A tungsten halogen lamp is a type of lamp that produces light through the reaction of a halogen additive in the bulb with tungsten. The halogen cycle allows for the re-deposition of tungsten back onto the filament, increasing the lifespan of the lamp. This type of lamp is commonly used in applications where a high-quality, bright light is required, such as in photography or stage lighting.

Limit switches are devices that are used to control the movement of an elevator car and prevent it from traveling beyond the highest and lowest floors. These switches are placed at the top and bottom of the elevator shaft and are activated when the car reaches these extreme positions. When the limit switch is triggered, it sends a signal to the elevator control system to stop the motor and prevent any further movement. This ensures the safety of the passengers and prevents any damage to the elevator by preventing excessive car travel.

The correct answer is the Mechanical Maintenance Locking Device. This device is installed at the drive unit location of escalators to prevent any accidental movement of the escalator while it is being inspected or undergoing general maintenance. It ensures the safety of the maintenance personnel by securely locking the escalator in place, preventing any unexpected movement that could cause accidents or injuries.

Passive Infrared with Ultrasonic (or Microwave) is the correct answer because this type of perimeter detector utilizes both the Passive Infrared (PIR) technology and either Ultrasonic or Microwave systems. PIR detects changes in infrared radiation emitted by objects, while Ultrasonic or Microwave systems use sound waves or radio waves to detect movement. By combining these technologies, the detector can provide more accurate and reliable detection of perimeter breaches.

A safety shoe is the correct answer because it is a device that can be used in elevators to detect obstacles during the door closing. If the safety shoe detects something in its path, it triggers the elevator to reopen the door, preventing any accidents or injuries. This device is often used in conjunction with a photocell for added safety measures.

Handrail Guard Switches are designed to stop the escalator if a foreign object becomes wedged at the guard. These switches are typically located at the entrance and exit points of the escalator, and they are activated when the handrail guard detects an obstruction. When an object gets stuck in the guard, the switch is triggered, sending a signal to the control system to stop the escalator immediately. This safety feature prevents accidents and injuries by halting the escalator's movement when a foreign object is detected, ensuring the safety of passengers.

A mercury lamp is a type of lamp that is commonly used for lighting commercial interiors. It utilizes argon gas to facilitate starting and produces light through an electric discharge in mercury vapor.

Frequency refers to the number of cycles or oscillations that occur in a given unit of time. It is measured in hertz (Hz), which represents the number of cycles per second. In the context of waves or oscillations, frequency determines the pitch of a sound wave or the color of a light wave. A higher frequency corresponds to a higher pitch or a bluer color, while a lower frequency corresponds to a lower pitch or a redder color. Therefore, frequency is the correct answer in this case.

The correct answer is High-Pressure-Sodium (HPS). High-Pressure-Sodium lamps are commonly used for roadways and sidewalks because they emit a bright yellow light that improves visibility at night. These lamps work by passing an electric current through a mixture of sodium and mercury vapor, which produces a high-intensity discharge. The sodium gas in the lamp helps to create the characteristic yellow light that is effective for outdoor lighting applications.

The correct answer is "Moisture and Heat Resistant- Cross-Linked Thermosetting". This answer indicates that XHHN in wire specification refers to a type of wire that is both moisture and heat resistant. Additionally, it mentions that the wire is made of cross-linked thermosetting material.

A proximity/capacitance perimeter detector is able to detect intrusion by sensing a change in capacitance in the covered area. When an object or person enters the area, it disrupts the capacitance, triggering an alarm. This type of detector is effective in detecting intrusion as it can sense even slight changes in the capacitance, making it highly sensitive and accurate.

The term "Ton of Refrigeration" refers to the amount of cooling capacity required to freeze or melt one ton of ice in 24 hours. In this case, since 1 ton of ice is melting to water at the same temperature in 24 hours, the cooling effect obtained is equivalent to one Ton of Refrigeration.

A metal halide lamp is a type of high intensity discharge lamp that produces light through radiation from a mixture of metallic vapor. It is similar in construction to a mercury lamp, but the metallic vapor in a metal halide lamp is different. This explanation highlights the key characteristics of a metal halide lamp and distinguishes it from other types of lamps mentioned in the options.

The correct answer is "Current Overload Safety Switch." In escalators, a current overload safety switch is used to automatically stop the escalator if an abnormal current is supplied to the motor. This switch is designed to protect the motor from damage caused by excessive current flow, which can occur due to various reasons such as a malfunctioning motor or a mechanical obstruction. When the switch detects an abnormal current, it interrupts the power supply to the motor, bringing the escalator to a halt and preventing any further damage or potential hazards.

The disconnect switch is located at the bottom truss of the escalator and has on and off positions. It is used to stop or prevent the escalator from starting during maintenance service. This switch is important for ensuring the safety of maintenance workers and preventing accidents while the escalator is being serviced. It allows the power supply to be disconnected, effectively cutting off the electrical connection to the escalator.

Transmission loss refers to the number of decibels by which sound is reduced when it passes through a partition. It is a measure of the sound insulation value of the partition, with a higher number indicating greater insulation. This term is commonly used in acoustics and building construction to assess the effectiveness of soundproofing materials and techniques.

TW in electrical wire specification means that the wire is moisture resistant and can be used in both wet and dry locations. This indicates that the wire has been designed to withstand exposure to moisture without being damaged, making it suitable for use in various environments.

The fascia plate is the correct answer because it serves as a protective barrier that prevents passengers from falling into the hoistway when they try to exit the elevator car. It is located on the sides of the elevator car and acts as a barrier between the car and the hoistway. This safety feature ensures that passengers are not able to access the hoistway when the elevator is stopped between floors, reducing the risk of accidents or injuries.

Black is the correct color code for pipes containing acid. This color is commonly used to indicate the presence of highly corrosive substances such as acids. The color black serves as a warning to individuals working with these pipes to exercise caution and take appropriate safety measures.

The statement "3" diameter is 'not' a commercial size of G.I. Pipe for water supply" is not true because 3" diameter is indeed a commercial size of G.I. Pipe for water supply.

The collection line of a plumbing system is sometimes referred to as a "House Drain." This term is used to describe the pipe or system of pipes that collect wastewater from various fixtures and appliances within a house and transport it to the main sewer line or septic tank. The House Drain is an essential part of the plumbing system as it ensures the proper disposal of wastewater and prevents any potential backups or clogs within the house.

A sheave is a component of an assembly that consists 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. This explanation fits the given definition of a sheave and accurately describes its function.

A knife switch is a type of switch that can be used to completely cut off the current supply to a device or system. In the context of the given question, a knife switch would be an appropriate choice because it allows for the complete disconnection of the current supply to the escalator. This is necessary for inspection, maintenance, or repairs to be carried out safely, as it ensures that no current is flowing through the escalator while work is being done.

An air terminal is a device used in a lightning protection system that is installed on the upper part of a structure. It consists of a metal rod and its brace or footing. The purpose of the air terminal is to provide a preferred path for lightning to strike, diverting the electrical current safely into the ground. By attracting and capturing the lightning strike, the air terminal helps protect the structure and its occupants from potential damage and harm.

Microwave is the correct answer because it is a type of perimeter detector that uses radio waves. It is subject to false alarms from aircraft radar and movement outside the building through windows, wood doors, and similar objects. Microwave detectors emit microwave signals and detect any changes in the reflected signals caused by movement, triggering an alarm if detected.