Maintenance Test Questions With Answers Quiz

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1.
Swimming pool safety equipment must be in place at all times.

Explanation

It is important to have swimming pool safety equipment in place at all times to ensure the safety of individuals using the pool. This equipment may include items such as life jackets, rescue tubes, first aid kits, and pool alarms. Having these safety measures in place can help prevent accidents and provide assistance in case of emergencies. Therefore, the statement is true.

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About This Quiz
Maintenance Test Questions With Answers Quiz - Quiz

Put your maintenance knowledge to our Maintenance Test Questions With Answers Quiz! This quiz is designed to challenge your understanding of various maintenance procedures and concepts. Whether you're... see morea seasoned maintenance professional looking to brush up on your skills or someone interested in learning more about maintenance tasks, this quiz is perfect for you.

Our quiz covers a wide range of topics, including equipment maintenance, troubleshooting techniques, safety procedures, and more. With each question, you'll have the opportunity to showcase your expertise and learn new information along the way. This Quiz is the perfect way to challenge yourself and expand your understanding of maintenance practices. Take our quiz now and see how well you know your stuff! see less

2.  
People are judged on their appearance, so, it is important to present a clean, organized and professional image to your residents.

Explanation

In society, people are often judged based on their appearance. This is especially true in professional settings, such as when interacting with residents. Therefore, it is important to present oneself in a clean, organized, and professional manner. This can help create a positive impression and establish credibility with the residents.

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3.
Service requests should be filled out completely and signed before returning to the manager or office staff.

Explanation

It is important to fill out service requests completely and sign them before returning them to the manager or office staff. This ensures that all necessary information is provided and helps in maintaining a record of the request. By signing the form, the person acknowledges their responsibility for the request and provides consent for the requested service. Therefore, the statement "Service requests should be filled out completely and signed before returning to the manager or office staff" is true.

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4.
Quality maintenance service is just as important to the success of an apartment community as quality management.

Explanation

Quality maintenance service is crucial for the success of an apartment community because it ensures that the property is well-maintained, repairs are promptly addressed, and residents' needs are met. Without proper maintenance, the property may deteriorate, leading to dissatisfaction among residents and potential negative reviews. Quality management focuses on the overall operations and administration of the community, while quality maintenance service ensures that the physical aspects of the property are well taken care of. Both aspects are equally important for the success and reputation of the apartment community.

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5.
A copy of the service request should be left in every occupied apartment after completion to let the resident know what service has been completed.

Explanation

Leaving a copy of the service request in every occupied apartment after completion is a good practice to inform the resident about the service that has been completed. This helps in maintaining transparency and ensuring that the resident is aware of the work that has been done. It also serves as a record for both the resident and the service provider. Therefore, the statement is true.

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6.
Picking up litter on the property is every employee's business; there are no exceptions.

Explanation

This statement implies that it is the responsibility of every employee to pick up litter on the property, and there are no exceptions to this rule. This means that regardless of an employee's position or role within the organization, they are expected to contribute to keeping the property clean by picking up litter. Therefore, the correct answer is True.

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7.
Where do you find a flapper?

Explanation

A flapper is a rubber valve that is found in a toilet tank. It is attached to the flush valve and is responsible for controlling the flow of water from the tank into the toilet bowl. When the toilet is flushed, the flapper lifts up, allowing water to flow into the bowl, and then closes again to stop the water flow. Therefore, the correct answer is "In a toilet tank."

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8.
Quality of tools may reflect the quality of work.

Explanation

The statement suggests that the quality of the tools used can be an indication of the quality of work produced. This means that if someone uses high-quality tools, it is likely that they will produce high-quality work. On the other hand, if someone uses low-quality tools, it is more likely that their work will be of lower quality. Therefore, the answer "True" is correct as it aligns with the statement provided.

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9.
Algae are microscopic plant life.

Explanation

Algae are indeed considered plant-like organisms and many types of algae are microscopic. While some algae are large, such as seaweeds, many are microscopic, including phytoplankton, which are crucial to aquatic ecosystems. They perform photosynthesis, similar to plants, and are fundamental to the food chain in aquatic environments.

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10.
For safety reasons, you should never go up on a roof while there is dew on the ground.

Explanation

Dew on the ground can make the surface slippery, increasing the risk of accidents and falls. Going up on a roof in such conditions can be dangerous as it can lead to loss of balance and potential injuries. It is important to wait for the ground to dry before attempting to go up on a roof to ensure safety.

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11.
What does G.F.I. stand for?

Explanation



G.F.I. stands for Ground fault circuit interrupters. It is a device designed to protect against electrical shock by quickly disconnecting power in the event of a ground fault, which occurs when electrical current leaks to ground due to a fault in the circuit.
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12.
On a 110-volt circuit, the hot wire is normally:

Explanation

On a 110-volt circuit, the hot wire is typically black or red. The hot wire carries the electrical current from the power source to the outlet or device. In standard electrical wiring color codes, the black or red wires are designated as hot wires. The white wire is usually the neutral wire, which completes the circuit by carrying current back to the power source. Green or bare wires are used for grounding to prevent electrical shocks. Understanding these color codes is essential for safely working with electrical systems.

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13.
Never mix two pool maintenance chemicals together.

Explanation

Mixing two pool maintenance chemicals together can be extremely dangerous. Certain combinations can create toxic fumes or even cause explosions. It is important to always follow the instructions on the chemical labels and never mix them unless specifically directed to do so.

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14.
In BTU's, which of the following is a one (1) ton unit?

Explanation

A one (1) ton unit in BTU's is equivalent to 12000.

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15.
Most gas water heaters have two (2) regulators. The one on the meter should be adjusted only by the utility company.

Explanation

Gas water heaters typically have two regulators: one on the meter and one on the heater itself. The regulator on the meter is typically adjusted and maintained by the utility company, as it controls the flow of gas to the entire property. It is important for the utility company to have control over this regulator to ensure the safe and efficient operation of the gas supply. Therefore, the statement that the regulator on the meter should only be adjusted by the utility company is true.

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16.
Where is a P-Trap located?

Explanation

A P-Trap is a curved pipe that is used in plumbing to prevent sewer gases from entering a building. It is typically located under the sink because it is connected to the drain pipe. The curved shape of the P-Trap holds water, which creates a seal and prevents gases from flowing back into the sink. Therefore, the correct answer is "Under the sink."

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17.
On most garbage disposals, where is the reset button located?

Explanation

 The reset button on most garbage disposals is located on the bottom of the disposal unit. This button is a safety feature designed to reset the disposal if it overheats or becomes jammed. When the disposal is overloaded or encounters a problem, the reset button will pop out, cutting power to the unit to prevent damage. Pressing the button restores power once the issue is resolved. Knowing the location of the reset button is useful for troubleshooting common problems and maintaining the proper function of your garbage disposal.

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18.
As the hot water heater tank is being filled up, you should:

Explanation

As the hot water heater tank is being filled up, you should purge the tank of air. This involves opening a hot water faucet in the house to allow air to escape from the tank. Purging the air ensures that the tank fills completely with water, preventing air pockets that can cause uneven heating and potential damage to the heating elements. This step is crucial for the proper operation and longevity of the hot water heater, ensuring that it functions efficiently and safely.

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19.
Taking heat out of the air will do what to the air temperature?

Explanation

 Taking heat out of the air will lower the air temperature. This principle is the basis of how air conditioning and refrigeration systems work. By removing heat from the air, these systems cool the air, making the environment more comfortable. This process involves the use of refrigerants that absorb heat and then release it outside the area being cooled. Understanding this concept is fundamental in the study of thermodynamics and is essential for maintaining and troubleshooting cooling systems.

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20.
What is a valley on a roof?

Explanation

A valley on a roof refers to a point where two slopes meet. This is typically a V-shaped section on the roof where two sections of the roof slope downwards and meet at a lower point. Valleys are designed to channel water and debris off the roof, preventing water from pooling and causing damage.

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21.
When working on a defective breaker, what is the first thing you should do?

Explanation

The first thing you should do when working on a defective breaker is to turn off the main line breaker. This is important to ensure your safety and prevent any potential electrical accidents. By turning off the main line breaker, you are cutting off the power supply to the entire electrical system, including the defective breaker. This allows you to work on the breaker without the risk of electrical shock or other hazards. Removing the breaker or shutting it off alone may not be sufficient to ensure your safety, as there may still be live electricity flowing through the system.

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22.
When cutting glass with a glasscutter, pressing too hard can result in:

Explanation

Pressing too hard when cutting glass with a glasscutter can result in chipping the glass. This is because excessive pressure can cause the glass to crack or break along the cut line, leading to unwanted chips or uneven edges. It is important to apply gentle and consistent pressure while cutting glass to ensure a clean and precise cut.

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23. Regular maintenance can extend the life of your equipment.

Explanation

Regular maintenance helps identify and address potential issues before they escalate into major problems. This can involve cleaning, lubricating, inspecting, and replacing parts as needed. By keeping equipment in good working order, you can prevent breakdowns, optimize performance, and extend its lifespan.

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24.
What is an air diffuser?

Explanation

An air diffuser is a vent with an open/shut control. It is used to control the flow of air in a room or space by allowing the user to adjust the amount of air that is released or blocked. This helps in regulating the temperature, air circulation, and distribution in a building. A strip heat and "none of the above" are not accurate descriptions of an air diffuser.

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25.
What color is the high side gauge

Explanation

The high side gauge is typically colored red. This color is used to indicate the high pressure side of a system, such as an air conditioning or refrigeration system. The high side gauge is used to measure the pressure of the refrigerant on the high pressure side of the system. The color red is commonly associated with danger or caution, which is appropriate for the high pressure side of a system as it can be potentially hazardous if not handled properly.

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26.
On a 110-volt circuit, the neutral wire is normally:

Explanation

The neutral wire on a 110-volt circuit is normally white. The neutral wire carries the current back to the electrical source and completes the circuit. It is important for the neutral wire to be properly identified and distinguished from other wires to ensure safe and efficient electrical operation. The color coding system helps to identify and differentiate between different wires, with white typically being used for the neutral wire in residential electrical systems.

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27.
Where is a joist found?

Explanation

A joist is a structural element that is typically used in the construction of floors and sometimes ceilings. Joists are horizontal members that span across the floor's framework to provide support for the floor's load and to hold up the flooring material. They are crucial in creating a stable and level surface for the floor above.

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28.
Low voltage means:

Explanation

Low voltage typically means less than 30 volts, often around 24 volts. Low voltage systems are commonly used for control circuits in HVAC, security systems, and doorbells, as they are safer and require less insulation than higher voltage systems. These systems reduce the risk of electrical shock and are easier to work with. Understanding the definition and applications of low voltage is essential for safely managing and troubleshooting various electrical systems.

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29.
On a 110-volt circuit, where the white wire is common, the black wire is normally _________.

Explanation

In a 110-volt circuit where the white wire is common, the black wire is normally carrying the same voltage, which is 110 volts. The black wire is the hot wire in the circuit, responsible for carrying the electrical current from the power source to the connected devices or appliances. Therefore, the correct answer is 110 volts.

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30.
What kind of freon is used in central air conditioning?

Explanation

: R 22, also known as HCFC-22, is commonly used in central air conditioning systems. It has been a standard refrigerant for many years due to its efficiency and effectiveness in cooling. However, due to its ozone-depleting properties, R 22 is being phased out and replaced by more environmentally friendly refrigerants such as R 410A. Understanding the type of Freon used in air conditioning systems is important for proper maintenance, servicing, and ensuring compliance with current environmental regulations.
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31.
What is a striker plate?

Explanation

A striker plate is a component of a door assembly. It is a metal plate that is attached to the door jamb and has a hole or recessed area where the door latch or bolt fits into when the door is closed. The striker plate helps to secure the door by providing a solid surface for the latch or bolt to engage with, ensuring that the door remains closed and locked.

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32.
The proper way to clear a jam in a garbage disposal is to:

Explanation

To clear a jam in a garbage disposal, the proper way is to insert an unjamming wrench into the bottom of the disposal. This wrench can be used to manually rotate the disposal's impellers and dislodge any stuck objects. Turning the disposal on and off several times may not effectively clear the jam, and replacing the disposal should only be considered if the jam cannot be cleared using the unjamming wrench.

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33.
On a 110-volt circuit, the ground wire is normally:

Explanation

The ground wire in a 110-volt circuit is typically green or bare wire. The ground wire is responsible for providing a safe path for electrical current to flow in the event of a fault or short circuit. It helps to prevent electrical shock by redirecting the current away from people and equipment. The color coding of the ground wire helps to easily identify and distinguish it from other wires in the circuit.

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34.
When expecting more swimmers in your pool than normal, a higher dosage of ______ is suggested.

Explanation

When expecting more swimmers in your pool than normal, a higher dosage of chlorine is suggested. This is because chlorine is a disinfectant that helps to kill bacteria and prevent the growth of algae in the pool water. With more swimmers, there is a higher chance of introducing contaminants into the pool, such as sweat, oils, and urine. Increasing the dosage of chlorine helps to maintain proper sanitation levels and ensure that the water remains safe and clean for swimmers.

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35.
A single burner on a range will not come on. How do you check to see what is wrong?

Explanation

To check what is wrong with a single burner on a range that is not coming on, you can use an ohmmeter to measure the resistance of the burner. If the resistance is very high or infinite, it indicates that the burner is faulty and needs to be replaced. If the resistance is within the expected range, then the issue may lie with the thermostat or the circuit breaker. Therefore, ohming out the burner helps identify if it is the cause of the problem.

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36.
What is one purpose of shutoff valves on the compressor during installation and when servicing?

Explanation

Shutoff valves on the compressor during installation and servicing allow the freon to be saved. By shutting off the valves, the flow of freon can be stopped, preventing any loss or leakage of the refrigerant during maintenance or repair work. This helps in conserving the freon and ensuring its availability for future use.

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37.
A sequencer is used in:

Explanation

A sequencer is a device that is used to control the timing and sequencing of different components in a system. In the case of heating and air conditioning systems, a sequencer is used to control the operation of the various heating and cooling elements, such as the furnace, heat pump, and air conditioner. It ensures that these components are activated in the correct order and for the appropriate duration to maintain the desired temperature in the building. Therefore, the correct answer is heating and air conditioning.

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38.
What is the purpose of a squirrel cage?

Explanation

The purpose of a squirrel cage, commonly found in HVAC systems, is to move air through the air handler. This component, also known as a blower wheel, uses a series of blades arranged in a cylindrical shape to create airflow. As the cage rotates, it draws air into the system and pushes it through the ducts to distribute heated or cooled air throughout the building. This efficient air movement is essential for maintaining indoor comfort and ensuring the HVAC system operates effectively.

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39.
When wiring a new wall receptacle, the silver screw is for:

Explanation

When wiring a new wall receptacle, the silver screw is for the neutral wire. The neutral wire, typically white, completes the electrical circuit by carrying current back to the electrical panel. The brass screw is for the hot wire, which carries the electrical current from the power source to the outlet. The green screw is for the ground wire, which provides a safe path for electricity in case of a short circuit. Correctly identifying and connecting these wires is crucial for ensuring safe and functional electrical installations.

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40.
What is a swagging tool used for?

Explanation

A swagging tool is used for enlarging copper tubing. This tool is specifically designed to expand the diameter of copper tubing, allowing for a better fit and connection between pipes or fittings. It is commonly used in plumbing and HVAC systems to create a tight seal and prevent leaks. Swagging tools are not used for connecting PVC pipe joints or joining electrical wires.

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41.
The pilot light on a standing pilot water heater won't stay lit. What might be causing the problem?

Explanation

The thermocouple is a device that senses the heat from the pilot light and generates a small electric current to keep the gas valve open. If the thermocouple is faulty or not positioned correctly, it may not be generating enough current to keep the gas valve open, causing the pilot light to go out.

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42.
Where is a ballcock used?

Explanation

A ballcock is a mechanism used in a toilet to control the flow of water into the tank. It consists of a floating ball attached to an arm, which is connected to a valve. When the water level in the tank drops, the ball lowers and opens the valve, allowing water to enter the tank. Once the tank is filled, the ball rises and shuts off the valve to stop the flow of water. Therefore, a ballcock is specifically used in toilets to regulate the water level.

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43.
Where is the bibb seat located?

Explanation

 The bibb seat is located in a faucet. It is a part of the valve assembly in compression faucets, where the washer presses against it to stop the flow of water when the faucet is turned off. Over time, the bibb seat can become worn or damaged, leading to leaks. Replacing or reseating the bibb seat can often fix this issue and restore proper function to the faucet. Understanding the components of a faucet helps in troubleshooting and performing routine maintenance or repairs to prevent water waste and maintain functionality.

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44.
An iced up evaporator is usually a sign of insufficient air through the evaporator coils or:

Explanation

An iced up evaporator is usually a sign of low charge. When there is insufficient refrigerant in the system, the evaporator coils do not receive enough heat to properly evaporate the refrigerant. This causes the coils to become excessively cold and ice to form on them. High charge or none of the above would not result in the same issue of an iced up evaporator.

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45.
What are the two purposes of a filter drier?

Explanation

A filter drier serves two purposes: removing moisture and trapping debris. Moisture can be harmful to the system as it can cause corrosion and freeze-ups. The filter drier removes moisture from the refrigerant, ensuring the system operates efficiently. Additionally, the filter drier traps debris such as dirt, metal particles, and contaminants, preventing them from circulating through the system and causing damage to components like the compressor or expansion valve. By removing moisture and trapping debris, the filter drier helps maintain the performance and longevity of the HVAC system.

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46.
What is the purpose of a breaker in an electrical circuit?

Explanation

A breaker in an electrical circuit serves the purpose of overload protection. It is designed to automatically interrupt the flow of electrical current when it exceeds the safe limit. This helps prevent damage to the circuit and appliances, as well as reducing the risk of electrical fires. By tripping the breaker, it effectively stops the flow of current and protects the circuit from overloading. Therefore, the correct answer is "Overload protection".

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47.
After changing out an element on a water heater, you should always do what before turning the circuit breaker back on?

Explanation

After changing out an element on a water heater, you should always fill the tank with water before turning the circuit breaker back on. This is because the tank needs to be filled with water in order to prevent the heating element from burning out. If the tank is not filled with water, the heating element can overheat and become damaged. Therefore, it is important to ensure that the tank is filled with water before turning the circuit breaker back on to avoid any potential damage to the heating element.

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48.
When charging, vapor should be added to the ____ side of the compressor.

Explanation

When charging a refrigeration or air conditioning system, vapor should be added to the low side of the compressor. The low side, or suction side, is where the refrigerant enters the compressor as a low-pressure gas. Adding vapor to this side ensures proper system function and avoids potential damage to the compressor. Charging the system correctly is essential for maintaining efficient operation and preventing issues such as compressor overheating or liquid slugging, which can occur if liquid refrigerant enters the compressor.

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49.
What is the best product to use to thin or clean up latex paint?

Explanation

Water is the best product to use to thin or clean up latex paint. Latex paint is water-based, so using water to thin it or clean up any spills or brushes is the most effective and safe option. Varsal, paint thinner, and turpentine are all solvents that are typically used to thin or clean up oil-based paints, not latex paints. Using these solvents on latex paint can cause damage or produce undesirable results. Therefore, water is the recommended choice for thinning or cleaning up latex paint.

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50.
Apartment #2 is underneath Apartment #12. The occupants in #2 say that water is coming into their bathroom through the overhead vent every time the residents upstairs take a shower.  What is the probable cause?

Explanation

The probable cause for water coming into Apartment #2's bathroom through the overhead vent when the residents upstairs take a shower is that there is a combination of issues. The shower drain pipe may be leaking, allowing water to escape and flow downwards. Additionally, the absence of a shower curtain in Apartment #12 could result in water spraying out of the shower and onto the floor, which then seeps through the vent. Lastly, there may be a leak in the pipe between the showerhead and the water director, causing water to escape and reach the vent.

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51.
How many BTUs are in a ton?

Explanation

A BTU (British Thermal Unit) is a unit of energy commonly used in the heating and cooling industry. A ton is a unit of measurement used to quantify the cooling capacity of an air conditioning system. In this context, a ton refers to the amount of heat energy needed to melt one ton of ice in a 24-hour period. It is equal to 12,000 BTUs per hour, which means that the correct answer is 12,000.

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52.
How long is a recovery tank inspection good?

Explanation

A recovery tank inspection is good for 5 years. This means that after a recovery tank has been inspected and deemed safe, it is considered to be in compliance for a period of 5 years. After this time, the tank would need to be inspected again to ensure its continued safety and compliance.

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53.
On a 220-volt circuit, where the white wire is common, the red wire is normally ______.

Explanation

In a 220-volt circuit, the white wire serves as the neutral, and the red wire is one of the hot wires carrying the full 220 volts potential difference relative to the neutral wire. Typically, these circuits have two hot wires (red and black) each carrying 110 volts relative to the neutral, but the potential difference between the two hot wires (red and black) is 220 volts.

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54.
What is the purpose of a 3-way switch?

Explanation

A 3-way switch is designed to allow you to control a switch from two different locations. This means that you can turn the switch on or off from either location, providing convenience and flexibility in controlling the lighting or electrical device connected to the switch.

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55.
Most residential wiring is three phase.

Explanation

Most residential wiring is not three phase. Residential buildings typically use single-phase electrical systems, where the power is distributed through two wires - a live wire and a neutral wire. Three-phase electrical systems are more commonly used in commercial and industrial settings, where higher power demands are required.

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56. In air conditioning and refrigeration systems, where is refrigerant typically charged?

Explanation

In air conditioning and refrigeration systems, refrigerant charging typically involves adding refrigerant to both the low-pressure side (or low side) and the high-pressure side (or high side) of the system. This ensures proper distribution of the refrigerant throughout the system, allowing for efficient cooling or heating processes to occur. It's essential to charge refrigerant correctly to maintain system functionality and performance.

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57. Which of the following is the most effective method for preventing unexpected equipment failure in a preventive maintenance program?

Explanation

Preventive maintenance is key to avoiding unexpected equipment failures. The most effective method involves regular inspections and timely replacement of worn parts (Option B). This proactive approach helps identify potential issues before they escalate into major problems, ensuring the equipment runs smoothly and reducing downtime. In contrast, reactive maintenance (after failure) and waiting for signs of wear before acting can lead to costly repairs and interruptions in operations.

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58.
In roofing, a square (measurement) is an area of:

Explanation

A square in roofing measurement refers to an area of 10 ft x 10 ft. This means that the length and width of the square are both 10 feet. This measurement is commonly used in roofing to calculate the total area that needs to be covered or repaired. It is important to understand this measurement in order to accurately estimate materials and costs for roofing projects.

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59.
What kind of Freon would you suggest for use in an apartment freezer?

Explanation

R-12 (also known as Freon-12) was commonly used in household refrigerators and freezers. However, it's important to note that R-12 has been phased out due to its ozone-depleting properties. Modern appliances now use alternatives like R-134a. Of the options listed, R-12 is the most historically accurate choice for older freezers, but for newer appliances, a different, environmentally friendly refrigerant would be recommended.

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60.
A resident calls and complains that soap bubbles run out of the dishwasher when she runs it.  A probable cause is:

Explanation

The most probable cause for soap bubbles running out of the dishwasher is that the resident used hand dishwashing soap instead of automatic dishwashing soap. Hand dishwashing soap creates more suds than automatic dishwashing soap, which can cause an overflow of bubbles in the dishwasher. The other options, such as a clogged drain or the dishwasher being too full, may also contribute to the issue but are less likely to be the primary cause.

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61.
Which process uses Pentrox Solution?

Explanation

Pentrox Solution is used for aluminum to copper connections.

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62.
Older refrigerators contain which type of Freon:

Explanation

Older refrigerators commonly contain R 12, also known as Freon-12. R 12 was widely used as a refrigerant in refrigeration and air conditioning systems due to its stable and non-flammable properties. However, it has been phased out because it contributes to ozone layer depletion. Modern refrigerators now use more environmentally friendly refrigerants such as R 134a. Understanding the type of Freon used in older appliances is important for proper maintenance, servicing, and ensuring compliance with environmental regulations when dealing with refrigerants.

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63.
The condenser is part of the:

Explanation

The condenser is part of the high side of a refrigeration system. The high side is the section of the system where the high-pressure, high-temperature refrigerant gas is condensed into a liquid. The condenser receives the hot refrigerant gas from the compressor and cools it down, causing it to condense into a liquid. This liquid refrigerant then flows to the expansion valve and enters the low side of the system. Therefore, the condenser is not part of the low side or any other part of the system.

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64.
R-134A is a drop in replacement for R-12.

Explanation

R-134A is not a drop-in replacement for R-12. While it is commonly used as a substitute for R-12 in refrigeration and air conditioning systems, it requires modifications such as changes in lubricants, seals, and possibly other system components because R-134A operates at different pressures and has different chemical properties than R-12. Directly substituting R-134A into an R-12 system without modifications can lead to system failures.

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65.
Water is continually running out of the wall behind the toilet. What could be the cause?

Explanation

Continuous water running out of the wall behind the toilet may be caused by various issues, including a leaking cut-off valve, a break or leak in the supply line, or a damaged ballcock. All these components play a role in regulating water flow to and from the toilet. Identifying and addressing the specific problem is essential to resolve the water leakage issue effectively.

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66.
Muriatic acid is used to ____ the pH level in a pool.

Explanation

Muriatic acid is a strong acid that is commonly used to lower the pH level in a pool. pH level refers to the acidity or alkalinity of the water, and maintaining the proper pH level is important for the effectiveness of pool chemicals and the comfort of swimmers. Adding muriatic acid to the pool water helps to decrease the pH level and make it more acidic, balancing out any high alkalinity. Therefore, the correct answer is "Lower."

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67.
A fan or cooler relay is used in an electric furnace to change the blower speed to the _____ speed for cooling.

Explanation

A fan or cooler relay is used in an electric furnace to change the blower speed to the high speed for cooling. This is because during cooling, the furnace needs to circulate a larger volume of air to effectively cool the space. By setting the blower speed to high, the furnace can achieve this increased airflow and provide efficient cooling.

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68.
Where is a fuse link located?

Explanation

A fuse link is typically located on a heat coil. It is a safety device used in various heating appliances, such as electric furnaces and heating elements, to prevent overheating. The fuse link is designed to melt and break the electrical circuit if the temperature exceeds a certain threshold, thereby protecting the appliance from damage and preventing potential fire hazards. This critical safety component ensures that the heating device operates within safe temperature limits.
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69.
How would you remove a lodged obstruction from a toilet?

Explanation

Both a plunger and a toilet auger can be used to remove a lodged obstruction from a toilet. A plunger creates suction and pressure to dislodge the obstruction, while a toilet auger is a tool specifically designed to break up and remove stubborn clogs. Therefore, using either of these tools or a combination of both can effectively solve the problem.

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70.
Three letters on compressor blocks are:

Explanation

The correct answer is CSR. This can be determined by comparing the letters in each row and finding the pattern. In the first row, the letters are in alphabetical order. In the second row, the letters are in reverse alphabetical order. In the third row, the letters are in alphabetical order again. Therefore, the pattern suggests that the missing letters in the fourth row should be CSR.

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71.
When should a pool filter be backwashed?

Explanation

A pool filter should be backwashed according to the pressure because the pressure in the filter increases as debris and dirt accumulate. When the pressure reaches a certain level, it indicates that the filter is becoming clogged and is no longer effectively filtering the water. Backwashing is necessary to remove the accumulated debris and restore the filter's efficiency. Backwashing daily or monthly may not be necessary if the pressure has not reached the designated level.

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72.
Why is an electric furnace insulated?

Explanation

It's true that insulation in an electric furnace can provide fire protection, prevent ambient temperature infiltration, and contribute to soundproofing to some extent. Insulation primarily serves to prevent heat loss and maintain the desired temperature within the furnace, which directly relates to preventing energy waste and ensuring efficient operation. Fire protection and soundproofing can be additional benefits. 

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73.
What instrument is used to check the full load amps of a compressor?

Explanation

An Am Probe is used to check the full load amps of a compressor. This instrument is specifically designed to measure the current flowing through a circuit. It allows technicians to accurately measure the amount of current being drawn by the compressor when it is operating at full load. By measuring the full load amps, technicians can ensure that the compressor is operating within its specified limits and diagnose any potential issues with its electrical system. A volt meter is used to measure voltage, while an ohm meter is used to measure resistance. Therefore, neither of these options would be appropriate for checking the full load amps of a compressor.

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74.
What causes the burner flame on a gas stove to be yellow?

Explanation

The burner flame on a gas stove turns yellow when there is not enough air in the flame. This can happen when the air intake is blocked or restricted, preventing enough oxygen from reaching the flame. As a result, incomplete combustion occurs, leading to a yellow flame instead of the desired blue flame.

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75. When performing routine maintenance on an HVAC system, which of the following is NOT typically a recommended practice?

Explanation



Routine maintenance of an HVAC system includes tasks such as checking and replacing air filters, inspecting and cleaning coils, and ensuring the thermostat is functioning correctly to maintain efficiency and prolong the system's life. Adding refrigerant is not a routine practice and should only be done if there are signs of leakage or if system performance indicates a refrigerant issue. Adding refrigerant unnecessarily can harm the system's performance and efficiency.
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76.
To raise your swimming pool PH, which chemical should you add to the water?

Explanation

To raise the swimming pool's pH level, soda ash should be added to the water. Soda ash, also known as sodium carbonate, is a chemical compound that can increase the pH of the pool water. Chlorine is typically used to sanitize the pool and maintain proper disinfection levels, while muriatic acid is used to lower the pH if it becomes too high. Therefore, neither chlorine nor muriatic acid would be the correct choice for raising the pH level.

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77.
Why do you use a vacuum pump on an air conditioning unit?

Explanation

A vacuum pump is used on an air conditioning unit to remove impurities. Impurities such as moisture and non-condensable gases can negatively affect the performance and efficiency of the unit. By creating a vacuum, the pump helps to eliminate these impurities, ensuring that the air conditioning system operates at its optimal level. Additionally, removing impurities can also extend the lifespan of the unit and prevent any potential damage or malfunctions.

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78.
On which appliance would you find a hot wire relay?

Explanation

A hot wire relay is a component that is used to control the flow of electricity to a specific part of an appliance. In the case of a refrigerator, a hot wire relay may be found in the compressor circuit, which is responsible for cooling the refrigerator. This relay helps to regulate the power supply to the compressor, ensuring that it operates efficiently and safely.

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79.
The full load amps on a water heater thermostat should range between:

Explanation

The full load amps (FLA) rating on a water heater thermostat indicates the maximum electrical current the thermostat can handle under normal operating conditions. This rating helps ensure that the thermostat can safely control the heating elements of the water heater without overheating or causing electrical issues. FLA ratings for water heater thermostats commonly fall within the range of 15 to 19.5 amps, but exact values may vary depending on the specific model and capacity of the water heater. It's essential to adhere to the recommended FLA range specified by the manufacturer to ensure safe and efficient operation of the water heater.

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80.
The chlorine level in a pool should be maintained between:

Explanation

The correct answer is 1.0 - 3.0 ppm. This range is the recommended chlorine level for maintaining a safe and clean pool. Chlorine is used as a disinfectant in pools to kill bacteria and other harmful microorganisms. If the chlorine level is too low, it may not effectively sanitize the water, leading to the growth of algae and bacteria. On the other hand, if the chlorine level is too high, it can cause skin and eye irritation for swimmers. Therefore, it is important to maintain the chlorine level within the appropriate range of 1.0 - 3.0 ppm.

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81.
In air conditioning applications the evaporator is where what occurs?

Explanation

The evaporator in air conditioning systems is where moisture is removed from the air through evaporation. As warm air passes over the cold evaporator coils, moisture condenses and evaporates, leading to dehumidification. This process helps to cool and dry the air before it is circulated into the living or working space, enhancing comfort and indoor air quality.

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82. Which of the following maintenance tasks is typically performed least frequently?

Explanation

Timing belts are designed to last for an extended period, typically between 60,000 and 100,000 miles, depending on the vehicle. Engine oil changes, air filter replacements, and tire rotations are performed more frequently (every few thousand miles) to ensure optimal engine performance, fuel efficiency, and tire wear.

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83.
What is the function of the crankcase heater?

Explanation

The function of the crankcase heater is to heat the refrigerant oil and prevent liquid freon from mixing with the oil. This helps in maintaining the efficiency of the heating cycle and prevents the crankcase from cracking in freezing temperatures. Therefore, the correct answer is "To heat the refrigerant oil and keep liquid freon out of the oil."

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When should a pool filter be backwashed?
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When performing routine maintenance on an HVAC system, which of the...
To raise your swimming pool PH, which chemical should you add to the...
Why do you use a vacuum pump on an air conditioning unit?
On which appliance would you find a hot wire relay?
The full load amps on a water heater thermostat should range between:
The chlorine level in a pool should be maintained between:
In air conditioning applications the evaporator is where what occurs?
Which of the following maintenance tasks is typically performed least...
What is the function of the crankcase heater?
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