Maintenance Test Questions With Answers Quiz
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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 a 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 Read moreexpand your understanding of maintenance practices. Take our quiz now and see how well you know your stuff!
Maintenance Test Questions With Answers Questions and Answers
- 1.
On a 110-volt circuit, the hot wire is normally:
- A.
White
- B.
Black or Red
- C.
Green or bare wire
- D.
Yellow
Correct Answer
B. Black or RedExplanation
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.Rate this question:
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- 2.
What is the purpose of a squirrel cage?
- A.
To move air through the handler.
- B.
To cool circulation pump.
- C.
None of the above
- D.
All of the above
Correct Answer
A. To move air through the handler.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.Rate this question:
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- 3.
Where is a fuse link located?
- A.
In a fuse box
- B.
On a heat coil
- C.
On a stove element
- D.
None of the above
Correct Answer
B. On a heat coilExplanation
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.Rate this question:
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- 4.
On most garbage disposals, where is the reset button located?
- A.
In the breaker box
- B.
On the outlet nearest the disposal
- C.
On the bottom of the disposal
- D.
On the nearest wall
Correct Answer
C. On the bottom of the disposalExplanation
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.Rate this question:
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- 5.
Where is the bibb seat located?
- A.
In a faucet
- B.
On a toilet
- C.
None of the above
- D.
All of the above
Correct Answer
A. In a faucetExplanation
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.Rate this question:
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- 6.
As the hot water heater tank is being filled up, you should:
- A.
Clean it up
- B.
Flush the toilet
- C.
Purge the tank of air
- D.
None of the above
Correct Answer
C. Purge the tank of airExplanation
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.Rate this question:
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- 7.
What kind of freon is used in central air conditioning?
- A.
R 12
- B.
R 11
- C.
R 22
- D.
R 21
Correct Answer
C. R 22Explanation
: 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.Rate this question:
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- 8.
Taking heat out of the air will do what to the air temperature?
- A.
Raise
- B.
Lower
- C.
Stabilize
- D.
None of the above
Correct Answer
B. LowerExplanation
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.Rate this question:
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- 9.
When charging, vapor should be added to the ____ side of the compressor.
- A.
High
- B.
Low
- C.
Liquid
- D.
Left
Correct Answer
B. LowExplanation
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.Rate this question:
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- 10.
What is the best product to use to thin or clean up latex paint?
- A.
Varsal
- B.
Water
- C.
Paint thinner
- D.
Turpentine
Correct Answer
B. WaterExplanation
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.Rate this question:
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- 11.
Low voltage means:
- A.
Less than 220 volts
- B.
Less than 460 volts
- C.
110 volt
- D.
Less than 30 volts (usually 24)
Correct Answer
D. Less than 30 volts (usually 24)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.Rate this question:
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- 12.
When wiring a new wall receptacle, the silver screw is for:
- A.
Ground wire
- B.
Neutrel Wire
- C.
Hot wire
- D.
None of the above
Correct Answer
B. Neutrel WireExplanation
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.Rate this question:
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- 13.
What is a swagging tool used for?
- A.
Enlarging copper tubing
- B.
Connecting PVC pipe joints
- C.
Joining electrical wires
- D.
None of the above
Correct Answer
A. Enlarging copper tubingExplanation
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.Rate this question:
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- 14.
What is one purpose of shutoff valves on the compressor during installation and when servicing?
- A.
Too allow you to overheat the compressor to check for leaks
- B.
Too allow the freon to be saved while servicing the unit
- C.
Too regulate or shut-off electrical current to the condensor
- D.
None of the above
Correct Answer
B. Too allow the freon to be saved while servicing the unitExplanation
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.Rate this question:
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- 15.
The pilot light on a standing pilot water heater won't stay lit. What might be causing the problem?
- A.
The ignitor
- B.
The thermocouple
- C.
The theromostat
- D.
None of the above
Correct Answer
B. The thermocoupleExplanation
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.Rate this question:
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- 16.
In roofing, a square (measurement) is an area of:
- A.
1 ft x 1 ft
- B.
10 ft x 10 ft
- C.
100 ft x 100 ft
- D.
None of the above
Correct Answer
B. 10 ft x 10 ftExplanation
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.Rate this question:
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- 17.
Most gas water heaters have two (2) regulators. The one on the meter should be adjusted only by the utility company.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 18.
Muriatic acid is used to ____ the pH level in a pool.
- A.
Raise
- B.
Lower
- C.
Stabilize
- D.
None of the above
Correct Answer
B. LowerExplanation
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."Rate this question:
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- 19.
Never mix two pool maintenance chemicals together.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 20.
Most residential wiring is three phase.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
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.Rate this question:
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- 21.
On which appliance would you find a hot wire relay?
- A.
Stove
- B.
Refrigerator
- C.
Dishwasher
- D.
Hot water heater
Correct Answer
B. RefrigeratorExplanation
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.Rate this question:
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- 22.
Where do you find a flapper?
- A.
In a dishwasher
- B.
In a toilet tank
- C.
In a water heater
- D.
In a oven
Correct Answer
B. In a toilet tankExplanation
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."Rate this question:
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- 23.
Which process uses Pentrox Solution?
- A.
Aluminum to copper connections
- B.
PVC pipe connections
- C.
Cleaning ground wires
- D.
All of the above
Correct Answer
A. Aluminum to copper connectionsExplanation
Pentrox Solution is used for aluminum to copper connections.Rate this question:
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- 24.
A sequencer is used in:
- A.
Heating and air conditioning
- B.
Plumbing
- C.
Outside lighting
- D.
None of the above
Correct Answer
A. Heating and air conditioningExplanation
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.Rate this question:
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- 25.
An iced up evaporator is usually a sign of insufficient air through the evaporator coils or:
- A.
Low charge
- B.
High charge
- C.
None of the above
- D.
All of the above
Correct Answer
A. Low chargeExplanation
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.Rate this question:
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- 26.
A resident calls and complains that soap bubbles run out of the dishwasher when she runs it. A probable cause is:
- A.
The drain is clogged
- B.
The resident used hand dishwashing soap instead of automatic dishwashing soap
- C.
Thd dishwasher is to full
- D.
All of the above
Correct Answer
B. The resident used hand dishwashing soap instead of automatic dishwashing soapExplanation
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.Rate this question:
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- 27.
When should a pool filter be backwashed?
- A.
Everyday
- B.
When the water starts to look milky
- C.
According to the pressure
- D.
Monthly
Correct Answer
C. According to the pressureExplanation
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.Rate this question:
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- 28.
What is the purpose of a breaker in an electrical circuit?
- A.
To route electrical currents
- B.
Overload protection
- C.
All of the above
- D.
None of the above
Correct Answer
B. Overload protectionExplanation
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".Rate this question:
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- 29.
What is an air diffuser?
- A.
Part of a strip heat
- B.
A vent with an open/shut control
- C.
None of the above
- D.
All of the above
Correct Answer
B. A vent with an open/shut controlExplanation
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.Rate this question:
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- 30.
For safety reasons, you should never go up on a roof while there is dew on the ground.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 31.
How long is a recovery tank inspection good?
- A.
1 year
- B.
5 years
- C.
10 years
- D.
15 years
Correct Answer
B. 5 yearsExplanation
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.Rate this question:
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- 32.
The condenser is part of the:
- A.
High side
- B.
Low Side
- C.
Neither
- D.
None of the above
Correct Answer
A. High sideExplanation
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.Rate this question:
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- 33.
What causes the burner flame on a gas stove to be yellow?
- A.
High gas pressure
- B.
Too much air in the flame
- C.
Not enough air in the flame
- D.
All of the above
Correct Answer
C. Not enough air in the flameExplanation
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.Rate this question:
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- 34.
Three letters on compressor blocks are:
- A.
D O A
- B.
C S R
- C.
B T U
- D.
B T R
Correct Answer
B. C S RExplanation
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.Rate this question:
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- 35.
When cutting glass with a glasscutter, pressing too hard can result in:
- A.
Chipping the glass
- B.
Not getting the cut straight
- C.
Dulling the cutter
- D.
Not cutting at all
Correct Answer
A. Chipping the glassExplanation
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.Rate this question:
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- 36.
What are the two purposes of a filter drier?
- A.
Too remove moisture and trap debris
- B.
Too evaporate water from outside the compressor during rain
- C.
Too heat air and gas, too increase efficiency
- D.
A and B
Correct Answer
A. Too remove moisture and trap debrisExplanation
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.Rate this question:
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- 37.
What is a striker plate?
- A.
Part of a door assembly
- B.
An Anvil
- C.
A lighter for a torch
- D.
None of the above
Correct Answer
A. Part of a door assemblyExplanation
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.Rate this question:
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- 38.
Where is a P-Trap located?
- A.
Under the dishwasher
- B.
Under the sink
- C.
Behind the refrigerator
- D.
None of the above
Correct Answer
B. Under the sinkExplanation
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."Rate this question:
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- 39.
A fan or cooler relay is used in an electric furnace to change the blower speed to the _____ speed for cooling.
- A.
High
- B.
Medium
- C.
Low
- D.
All of the above
Correct Answer
A. HighExplanation
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.Rate this question:
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- 40.
On a 110-volt circuit, where the white wire is common, the black wire is normally _________.
- A.
24 volts
- B.
110 volts
- C.
220 volts
- D.
210 volts
Correct Answer
B. 110 voltsExplanation
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.Rate this question:
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- 41.
To raise your swimming pool pH, which chemical should you add to the water?
- A.
Soda Ash
- B.
Chlorine
- C.
Muriatic Acid
- D.
None of the above
Correct Answer
A. Soda AshExplanation
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.Rate this question:
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- 42.
Where is a ballcock used?
- A.
In a dishwasher
- B.
In a toilet
- C.
In a water heater
- D.
All of the above
Correct Answer
B. In a toiletExplanation
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.Rate this question:
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- 43.
Why do you use a vacuum pump on an air conditioning unit?
- A.
To remove the freon
- B.
To remove impurities
- C.
To remove the oil
- D.
All of the above
Correct Answer
B. To remove impuritiesExplanation
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.Rate this question:
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- 44.
The proper way to clear a jam in a garbage disposal is to:
- A.
Turn it on and off several times
- B.
Insert a unjamming wrench into the bottom of the disposal
- C.
There is no proper way, it must be replaced
- D.
None of the above
Correct Answer
B. Insert a unjamming wrench into the bottom of the disposalExplanation
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.Rate this question:
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- 45.
On a 110-volt circuit, the ground wire is normally:
- A.
Black or Red
- B.
White
- C.
Green or bare wire
- D.
Yellow
Correct Answer
C. Green or bare wireExplanation
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.Rate this question:
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- 46.
What color is the high side gauge
- A.
Red
- B.
Blue
- C.
Green
- D.
White
Correct Answer
A. RedExplanation
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.Rate this question:
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- 47.
In BTU's, which of the following is a one (1) ton unit?
- A.
12000
- B.
2000
- C.
10000
- D.
20000
Correct Answer
A. 12000Explanation
A one (1) ton unit in BTU's is equivalent to 12000.Rate this question:
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- 48.
A single burner on a range will not come on. How do you check to see what is wrong?
- A.
Ohm out the burner that is not coming on
- B.
Replace the burner
- C.
Replace the thermostat
- D.
Reset circuit breaker
Correct Answer
A. Ohm out the burner that is not coming onExplanation
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.Rate this question:
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- 49.
What instrument is used to check the full load amps of a compressor?
- A.
Volt meter
- B.
Ohm meter
- C.
Am Probe
- D.
None of the above
Correct Answer
C. Am ProbeExplanation
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.Rate this question:
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- 50.
The chlorine level in a pool should be maintained between:
- A.
7.2 - 7.5 ppm
- B.
1.0 - 3.0 ppm
- C.
5.0 - 10.0 ppm
- D.
None of the above
Correct Answer
B. 1.0 - 3.0 ppmExplanation
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.Rate this question:
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Oct 30, 2024Quiz Edited by
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Oct 17, 2009Quiz Created by
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