The Building & Utilities Maintenance Quiz
Take this quiz and learn about building and utilities maintenance, and repair of all heating, air conditioning, ventilating and refrigeration equipment including the central steam and chilled water.
Questions and Answers
- 1.
The amount of heat which is absorbed or evolved in changing the state of a substance without changing its temperature.
- A.
Latent Heat
- B.
Thermostat
- C.
Heat Wave
- D.
Thermal Heat
Correct Answer
A. Latent HeatExplanation
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.Rate this question:
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- 2.
A system of devices, usually installed below ground level, to scatter or spray water droplets over a lawn, golf course, or the like.
- A.
Hosebibb
- B.
Sprinkler System
- C.
Lawn Sprinkler System
- D.
Lawn Shower
Correct Answer
C. Lawn Sprinkler SystemExplanation
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.Rate this question:
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- 3.
Minimum width of a septic tank.
- A.
80 cm
- B.
90 cm
- C.
60 cm
- D.
40 cm
Correct Answer
B. 90 cmExplanation
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.Rate this question:
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- 4.
Minimum length of a septic tank.
- A.
2.0 m
- B.
0.9 m
- C.
1.0 m
- D.
1.5 m
Correct Answer
D. 1.5 mExplanation
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.Rate this question:
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- 5.
Minimum liquid depth of a septic tank.
- A.
60 cm
- B.
80 cm
- C.
100 cm
- D.
50 cm
Correct Answer
A. 60 cmExplanation
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.Rate this question:
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- 6.
Maximum liquid depth for septic tank.
- A.
1.7 m
- B.
1.0 m
- C.
1.2 m
- D.
1.8 m
Correct Answer
D. 1.8 mExplanation
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.Rate this question:
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- 7.
Minimum capacity, in cubic meters, of the secondary compartment of a septic tank.
- A.
1.2 cum
- B.
1.1 cum
- C.
1 cum
- D.
2 cum
Correct Answer
C. 1 cumExplanation
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.Rate this question:
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- 8.
Minimum dimension of a manhole access to a septic tank.
- A.
500 mm
- B.
502 mm
- C.
508 mm
- D.
504 mm
Correct Answer
C. 508 mmExplanation
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.Rate this question:
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- 9.
Minimum length of the secondary compartment of a septic tank with a capacity of more than 6 cubic meters.
- A.
1.5 m
- B.
2 m
- C.
1 m
- D.
1.2 m
Correct Answer
A. 1.5 mExplanation
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.Rate this question:
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- 10.
Minimum distance of a water supply well from a septic tank.
- A.
12.5 m
- B.
15.6 m
- C.
14.3 m
- D.
15.2 m
Correct Answer
D. 15.2 mExplanation
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.Rate this question:
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- 11.
Minimum distance of a water supply well from a seepage pit or cesspool.
- A.
15.2 m
- B.
45.7 m
- C.
54.5 m
- D.
32.8 m
Correct Answer
B. 45.7 mExplanation
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.Rate this question:
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- 12.
Minimum distance of a water supply well from a disposal field.
- A.
28.5 m
- B.
40 m
- C.
30.5 m
- D.
15.2 m
Correct Answer
C. 30.5 mExplanation
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.Rate this question:
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- 13.
Minimum Gauge of galvanized sheet used for downspouts.
- A.
22
- B.
20
- C.
24
- D.
26
Correct Answer
D. 26Explanation
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.Rate this question:
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- 14.
Minimum height of a water seal for each fixture trap.
- A.
62 mm
- B.
35 mm
- C.
50 mm
- D.
51 mm
Correct Answer
D. 51 mmExplanation
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.Rate this question:
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- 15.
Maximum height of a water seal for each fixture trap.
- A.
102 mm
- B.
105 mm
- C.
90 mm
- D.
100 mm
Correct Answer
A. 102 mmExplanation
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.Rate this question:
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- 16.
Maximum length of the tailpiece from any fixture.
- A.
70 mm
- B.
40 mm
- C.
60 mm
- D.
50 mm
Correct Answer
C. 60 mmExplanation
The maximum length of the tailpiece from any fixture is 60 mm.Rate this question:
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- 17.
Minimum extension of the VSTR above the roof.
- A.
20 cm
- B.
12 cm
- C.
15 cm
- D.
10 cm
Correct Answer
C. 15 cmExplanation
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.Rate this question:
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- 18.
Minimum extension of the VSTR above an openable window, door opening, air intake, or vent shaft.
- A.
1 m
- B.
.9 m
- C.
.6 m
- D.
.5 m
Correct Answer
B. .9 mExplanation
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.Rate this question:
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- 19.
Minimum trap diameter for a bathtub
- A.
2 1/2" dia.
- B.
2" dia.
- C.
1 1/2" dia.
- D.
1" dia.
Correct Answer
C. 1 1/2" dia.Explanation
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.Rate this question:
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- 20.
Minimum trap diameter for a shower stall.
- A.
1" dia.
- B.
2" dia.
- C.
3" dia.
- D.
2.5" dia.
Correct Answer
B. 2" dia.Explanation
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.Rate this question:
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- 21.
A rough or sharp edge left on metal by a cutting tool.
- A.
Hedge
- B.
Burr
- C.
Cleanout
- D.
Spur
Correct Answer
B. BurrExplanation
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.Rate this question:
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- 22.
Minimum elevator width of single slide door elevator for small commercial or residential building.
- A.
0.6 m
- B.
0.8 m
- C.
1.00 m
- D.
1.20 m
Correct Answer
A. 0.6 mExplanation
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.Rate this question:
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- 23.
A device that is basically a double throw switch of generally 3-pole connection that will automatically transfer the power from the standby generator to the building circuitry during electrical power failure.
- A.
Single switch
- B.
Panel Board
- C.
AVR
- D.
Automatic transfer switch
Correct Answer
D. Automatic transfer switchExplanation
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.Rate this question:
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- 24.
Another name for passenger elevator.
- A.
Lift
- B.
Case
- C.
Dumbwaiter
- D.
Escalator
Correct Answer
A. LiftExplanation
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.Rate this question:
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- 25.
The minimum face to face distance between elevators in three and four car grouping.
- A.
2.0 m
- B.
1.5 m
- C.
2.5 m
- D.
3.0 m
Correct Answer
A. 2.0 mExplanation
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.Rate this question:
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- 26.
Collection line of a plumbing system is sometimes referred to as.
- A.
Vent Stack
- B.
Soil Pipe
- C.
House Drain
- D.
Main Sewer
Correct Answer
C. House DrainExplanation
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.Rate this question:
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- 27.
Maximum height of a dumbwaiter.
- A.
1.8 m
- B.
1.5 m
- C.
1 m
- D.
1.2 m
Correct Answer
D. 1.2 mExplanation
The maximum height of a dumbwaiter is 1.2 m.Rate this question:
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- 28.
A type of lighting that provides illumination to special objects like sculptures, flower arrangements, etc.
- A.
Task Lighting
- B.
Specific Lighting
- C.
Accent Lighting
- D.
General Lighting
Correct Answer
B. Specific LightingExplanation
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.Rate this question:
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- 29.
Standard length of an electrical metal conduit.
- A.
20'
- B.
15'
- C.
5'
- D.
10'
Correct Answer
D. 10'Explanation
The standard length of an electrical metal conduit is 10 feet.Rate this question:
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- 30.
An assembly consisting of a pulley wheel, side plates, shaft, and bearings over which a cable or roped is passed.
- A.
Sheave
- B.
Governor
- C.
Panel
- D.
Break
Correct Answer
A. SheaveExplanation
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.Rate this question:
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- 31.
The other type of flame detector other than the ultraviolet type.
- A.
Motion Sensored
- B.
Laser
- C.
Infrared
- D.
Light Beam
Correct Answer
C. InfraredExplanation
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.Rate this question:
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- 32.
Farad is the unit capacity of a ___.
- A.
Luminance
- B.
Resistance
- C.
Capacitor
- D.
Sound energy
Correct Answer
C. CapacitorExplanation
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.Rate this question:
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- 33.
Another name for distribution panel.
- A.
Panel Board
- B.
Power Board
- C.
Power Panel
- D.
Outlet
Correct Answer
C. Power PanelExplanation
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.Rate this question:
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- 34.
Standard size of wire for a circuit line.
- A.
Np. 14
- B.
No. 12
- C.
No. 8
- D.
No. 10
Correct Answer
B. No. 12Explanation
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.Rate this question:
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- 35.
Standard size of wire for a switch line.
- A.
No. 14
- B.
No. 8
- C.
No. 10
- D.
No. 12
Correct Answer
A. No. 14Explanation
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.Rate this question:
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- 36.
A device for converting alternating current to direct current.
- A.
Motor
- B.
Generator
- C.
Converter
- D.
Rectifier
Correct Answer
D. RectifierExplanation
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.Rate this question:
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- 37.
Another name for a Rectifier.
- A.
AC Generator
- B.
DC Generator
- C.
Converter
- D.
Inverter
Correct Answer
A. AC GeneratorExplanation
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.Rate this question:
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- 38.
A controller sensitive to the degree of moisture in the air.
- A.
Barometer
- B.
Thermostat
- C.
Humidistat
- D.
Hydrostat
Correct Answer
C. HumidistatExplanation
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.Rate this question:
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- 39.
Consist of a flyball or flyweight device designed to stop an elevator.
- A.
Elevator Stop
- B.
Governor
- C.
Motor
- D.
Break
Correct Answer
B. GovernorExplanation
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.Rate this question:
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- 40.
A stop valve placed in the service pipe close to the connection at the water main.
- A.
Water meter
- B.
Main Sewer
- C.
Corporation Stop
- D.
Gate valve
Correct Answer
C. Corporation StopExplanation
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.Rate this question:
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- 41.
A vent with a function to provide circulation if air between drainage and vent system.
- A.
Common vent
- B.
Loop vent
- C.
Relief vent
- D.
Circuit vent
Correct Answer
C. Relief ventExplanation
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.Rate this question:
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- 42.
Length along the centerline of the pipe and fitting.
- A.
Pipe length
- B.
Span
- C.
Finished length
- D.
Developed length
Correct Answer
D. Developed lengthExplanation
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.Rate this question:
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- 43.
Flange used on a pipe to cover a hole or opening in a floor or wall which the pipe pass.
- A.
Acroterion
- B.
Escutcheon
- C.
Wall plate
- D.
Floor plate
Correct Answer
B. EscutcheonExplanation
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.Rate this question:
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- 44.
A valve used in a flush tank controlling the flushing of fixture.
- A.
Angle valve
- B.
Check valve
- C.
Flash valve
- D.
Globe valve
Correct Answer
C. Flash valveExplanation
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.Rate this question:
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- 45.
Any liquid waste containing animal or vegetable matter in suspension or solution.
- A.
Sewage
- B.
Black water
- C.
Grey water
- D.
Dirty water
Correct Answer
A. SewageExplanation
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.Rate this question:
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- 46.
Component of fire extinguisher.
- A.
Argon
- B.
Carbon monoxide
- C.
Carbon dioxide
- D.
Titanium
Correct Answer
B. Carbon monoxideExplanation
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.Rate this question:
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- 47.
Interrelationship between value of voltage and current with the same frequency.
- A.
Phase
- B.
Cycle
- C.
Watt
- D.
Ampere
Correct Answer
A. pHaseExplanation
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.Rate this question:
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- 48.
Descriptive of any material such as synthetic resin which hardens when heated or cured, and does not soften when reheated.
- A.
Abs
- B.
Upvc
- C.
Thermoplastic
- D.
Thermosetting
Correct Answer
D. ThermosettingExplanation
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.Rate this question:
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- 49.
An Instrument which responds to changes in temperature, and directly or indirectly controls temperature.
- A.
Hydrostat
- B.
Thermostat
- C.
Barometer
- D.
Thermometer
Correct Answer
B. ThermostatExplanation
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.Rate this question:
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- 50.
Thin sheets that are used for controlling heat in drywall construction.
- A.
Rigid board insulation
- B.
Gypsum board
- C.
Insulating board
- D.
Panel board
Correct Answer
A. Rigid board insulationExplanation
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.Rate this question:
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Feb 13, 2023Quiz Edited by
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