2A654 CDC All UREs (100 Questions)

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  • 1/280 Questions

    What does the arrow stamped on the body of a check valve indicate?

    • Valve installation position to prevent air entrapment
    • Location of manufactures data block
    • Direction of fuel flow
    • Direction of by-pass fuel flow
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About This Quiz

All the UREs of CDC 2A654. There are 280 questions but it will pick a random 100 for you to answer.

2A654 CDC All UREs (100 Questions) - Quiz

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  • 2. 

    What feature in a fighter fuel quantity indicator will indicate the sum of fuel in all tanks on the aircraft?

    • Probe

    • Fuel load summation

    • Fuel quantity select panel

    • Totalizer

    Correct Answer
    A. Totalizer
    Explanation
    A totalizer is a feature in a fighter fuel quantity indicator that indicates the sum of fuel in all tanks on the aircraft. It provides a cumulative reading of the fuel quantity in all the tanks, allowing the pilot to easily determine the total fuel available. This feature is important for monitoring the overall fuel level and ensuring that there is sufficient fuel for the aircraft's operation.

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  • 3. 

    How often should you empty the explosion proof vacuum?

    • After every use

    • Before every use

    • Daily

    • Monthly

    Correct Answer
    A. After every use
    Explanation
    The explosion proof vacuum should be emptied after every use to ensure its proper functioning and safety. By emptying the vacuum after each use, any potentially hazardous materials or debris can be removed, preventing the risk of contamination or combustion. Regularly emptying the vacuum also helps to maintain its efficiency and prolong its lifespan.

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  • 4. 

    How many people are required for fuel tank entry?

    • 2

    • 3

    • 4

    • 5

    Correct Answer
    A. 3
    Explanation
    Three people are required for fuel tank entry because it is a safety protocol to have a minimum of two people inside the tank and one person outside to monitor and assist if any issues arise. This ensures that there is enough manpower to handle any emergencies and to maintain a safe working environment. Having three people also allows for better communication and coordination during the entry process, reducing the risk of accidents or mistakes.

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  • 5. 

    What must be done when draining fuel into a metallic container?

    • Bond the container to the aircraft.

    • Ensure all facility doors are open.

    • Place the container on the ground.

    • Place several pieces of absorbent mat on the ground.

    Correct Answer
    A. Bond the container to the aircraft.
    Explanation
    When draining fuel into a metallic container, it is important to bond the container to the aircraft. This is done to prevent the buildup of static electricity, which can cause a spark and potentially ignite the fuel vapors. Bonding the container to the aircraft ensures that any static electricity is safely discharged, reducing the risk of fire or explosion.

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  • 6. 

    What source provides the career knowledge training required for upgrade to 5-skill level?

    • Job Proficiency.

    • CDC.

    • Specialty Training Standard.

    • Technical Orders.

    Correct Answer
    A. CDC.
    Explanation
    CDC stands for Career Development Course, which is a source that provides career knowledge training required for upgrade to 5-skill level. CDCs are self-paced courses that cover the knowledge and skills necessary for a particular career field. These courses are designed to enhance job proficiency and prepare individuals for higher skill levels in their career. Therefore, CDC is the correct answer for the question.

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  • 7. 

    What type of inspection is performed on all newly assigned aircraft?

    • Special

    • Acceptance

    • Calendar

    • Time Replacement

    Correct Answer
    A. Acceptance
    Explanation
    Acceptance inspection is performed on all newly assigned aircraft to ensure that they meet the required standards and specifications before being put into service. This inspection is crucial to identify any potential issues or defects that may have occurred during manufacturing, transportation, or storage. It involves a thorough examination of the aircraft's components, systems, and documentation to verify their compliance with safety regulations and operational requirements. The acceptance inspection plays a vital role in ensuring the airworthiness and reliability of the newly assigned aircraft.

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  • 8. 

    What footwear items are authorized for wear inside a fuel cell?

    • Gym shoes.

    • Clean boots with or without covers.

    • Static resistant or neoprene booties.

    • Steel-toe boots with covers.

    Correct Answer
    A. Static resistant or neoprene booties.
    Explanation
    Static resistant or neoprene booties are authorized for wear inside a fuel cell. This is because these types of footwear provide protection against static electricity, which is crucial in a fuel cell environment to prevent any potential sparks or fires. Gym shoes, clean boots with or without covers, and steel-toe boots with covers are not specifically designed to be static resistant or made of neoprene material, so they may not provide the same level of safety and protection.

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  • 9. 

    What will happen to an air hose if it is run over by heavy equipment?

    • It will get dirty.

    • It will roll and become twisted.

    • It will rupture.

    • Nothing, air hoses are built for such conditions.

    Correct Answer
    A. It will rupture.
    Explanation
    If an air hose is run over by heavy equipment, it is likely to rupture. The weight and pressure exerted by the heavy equipment can cause the hose to be crushed or flattened, leading to a break or tear in the hose material. This can result in a loss of air pressure and render the hose unusable.

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  • 10. 

    As an Aircraft Journeyman what are you duties regarding hazardous materials?

    • Handle and label them according to only local environmental standards.

    • None. You are not authorized to handle hazardous materials.

    • Dispose of the according to applicable AFOSH standards.

    • Handle, label, and dispose of them according to environmental standards.

    Correct Answer
    A. Handle, label, and dispose of them according to environmental standards.
    Explanation
    As an Aircraft Journeyman, it is your duty to handle, label, and dispose of hazardous materials according to environmental standards. This means following proper protocols and guidelines to ensure the safe handling, labeling, and disposal of these materials in order to prevent any harm to the environment or individuals.

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  • 11. 

    An advantage of low observable technologies is the ability of an

    • Aircraft to maneuver better.

    • Aircraft to strike before it's detected.

    • Aircraft to take photos at low altitudes.

    • Enemy to detect an aircraft sooner.

    Correct Answer
    A. Aircraft to strike before it's detected.
    Explanation
    Low observable technologies refer to techniques and technologies used to reduce an aircraft's detectability by radar, infrared sensors, and other detection systems. By employing such technologies, an aircraft can become less visible to enemy radars and other detection systems, allowing it to strike targets before it is detected. This advantage gives the aircraft the element of surprise and increases its chances of successfully carrying out its mission without being detected or intercepted by the enemy.

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  • 12. 

    What should you use to clean tools that are extremely greasy and grimy?

    • Aluminum oxide abrasive cloth

    • Approved cleaning solvent

    • JP-4 or gasoline

    • Methyl Ethyl ketone (MEK)

    Correct Answer
    A. Approved cleaning solvent
    Explanation
    Approved cleaning solvent should be used to clean tools that are extremely greasy and grimy. This is because an approved cleaning solvent is specifically designed to effectively remove grease and grime without damaging the tools. Using other substances such as aluminum oxide abrasive cloth, JP-4 or gasoline, or methyl ethyl ketone (MEK) may not be as effective or safe for cleaning the tools.

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  • 13. 

    What outside agency must be notified prior to opening fuel tanks?

    • Bioenvironmental engineering services

    • Civil engineering

    • Fire protection services

    • Wing safety

    Correct Answer
    A. Fire protection services
    Explanation
    Fire protection services must be notified prior to opening fuel tanks because they are responsible for ensuring the safety and prevention of fires. Fuel tanks contain flammable substances, and any opening or maintenance work on them can pose a fire hazard. By notifying fire protection services, they can provide guidance, supervision, and take necessary precautions to prevent accidents and ensure the safety of personnel and property.

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  • 14. 

    An air compressor operating outside the fuel system repair area

    • Does not require grounding or bonding.

    • Must be bonded.

    • Must be grounded.

    • Must be grounded and bonded.

    Correct Answer
    A. Does not require grounding or bonding.
    Explanation
    The correct answer is "does not require grounding or bonding." This is because an air compressor operating outside the fuel system repair area does not pose a significant risk of igniting flammable vapors. Therefore, it does not need to be grounded or bonded to prevent the buildup of static electricity. Grounding and bonding are typically required for equipment that has the potential to generate sparks or static electricity, which could ignite flammable substances.

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  • 15. 

    When removing fire suppression foam from an aircraft fuel tank

    • Remove it as quickly as possible.

    • Tear it as evenly as possible.

    • Wear chemical-resistant gloves.

    • Wear a half-face respirator.

    Correct Answer
    A. Wear chemical-resistant gloves.
    Explanation
    When removing fire suppression foam from an aircraft fuel tank, it is important to wear chemical-resistant gloves. This is because the foam may contain chemicals that can be harmful to the skin. Wearing chemical-resistant gloves provides a barrier between the foam and the hands, preventing any potential skin irritation or chemical exposure. It is crucial to prioritize safety and take necessary precautions when handling potentially hazardous substances.

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  • 16. 

    An over the shoulder evaluation of a technician or supervisor accomplishing a maintenance action is a

    • Quality inspection.

    • Personnel evaluation.

    • Technical inspection.

    • Supplemental inspection.

    Correct Answer
    A. Personnel evaluation.
    Explanation
    An over the shoulder evaluation refers to observing someone while they are performing a task. In this case, a technician or supervisor is being observed while carrying out a maintenance action. This type of evaluation is typically done to assess the performance and skills of an individual. Therefore, the correct answer is personnel evaluation.

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  • 17. 

    The main purpose of ground mishap reporting is to

    • Identify circumstances or causes so future accidents can be prevented.

    • Establish the circumstances so that accidents can be properly classified.

    • Determine if non-Air Force personnel or property was involved.

    • Establish the causes to determine financial responsibility.

    Correct Answer
    A. Identify circumstances or causes so future accidents can be prevented.
    Explanation
    The main purpose of ground mishap reporting is to identify circumstances or causes so future accidents can be prevented. By analyzing the circumstances and causes of a ground mishap, it becomes possible to identify any underlying issues or trends that contributed to the accident. This information can then be used to implement corrective measures and preventative actions to avoid similar accidents in the future. The focus is on learning from past mistakes and improving safety protocols to ensure the well-being of personnel and property.

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  • 18. 

    What type of communication may be used during ground refueling operations?

    • Aircraft radio systems.

    • Hand-held walkie-talkies.

    • Aircraft intercommunication system.

    • Battery-powered radios only.

    Correct Answer
    A. Aircraft intercommunication system.
    Explanation
    During ground refueling operations, it is essential to have effective communication between the ground crew and the aircraft crew. The aircraft intercommunication system allows for clear and direct communication between the two parties involved. This system enables the ground crew to communicate important information to the aircraft crew, such as fueling progress, any issues or emergencies, and coordination for a safe and efficient refueling process. The use of aircraft radio systems, hand-held walkie-talkies, or battery-powered radios may not provide the same level of clarity and reliability as the aircraft intercommunication system.

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  • 19. 

    What type of illustration of the structure should be drawn to aid  in locating a seal plane when troubleshooting a fuel leak?

    • Cross-sectional

    • Horizontal

    • Inside

    • Top

    Correct Answer
    A. Cross-sectional
    Explanation
    A cross-sectional illustration of the structure should be drawn to aid in locating a seal plane when troubleshooting a fuel leak. This type of illustration provides a view of the structure as if it has been cut in half, allowing for a clear visualization of the internal components and their relationship to the seal plane. This can help identify any potential issues or areas of concern that may be causing the fuel leak.

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  • 20. 

    What type of entry on AFTO 781 A does not require a symbol?

    • Inspection of a noncritical system or subsystem.

    • Functional check flight due.

    • Informational not affecting flight safety.

    • Discrepancy which is corrected on-the-spot.

    Correct Answer
    A. Informational not affecting flight safety.
    Explanation
    An entry on AFTO 781 A that does not require a symbol is an informational not affecting flight safety. This type of entry includes any non-critical information or updates that do not impact the safety of the flight. It could be used to record routine maintenance, administrative notes, or any other non-critical information that needs to be documented but does not have any direct impact on the safety of the aircraft or its operation.

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  • 21. 

    On the AFTO form 781H, after refueling the aircraft, the person who performs or supervises the operation puts their name in block 14 using what format?

    • First name only

    • Last name only

    • Printed first and last name

    • Minimum signature (first initial and last name)

    Correct Answer
    A. Minimum signature (first initial and last name)
    Explanation
    On the AFTO form 781H, after refueling the aircraft, the person who performs or supervises the operation puts their name in block 14 using the format of minimum signature (first initial and last name). This means that they are required to sign their name using only their first initial followed by their last name. This format ensures that there is a clear identification of the person responsible for the refueling operation without revealing their full name.

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  • 22. 

    Many accidents can be prevented by simply

    • Keeping your work area clean and orderly.

    • Practicing good practical hygiene.

    • Clean fuel spills at the end of the day.

    • Keeping bench stock in its place.

    Correct Answer
    A. Keeping your work area clean and orderly.
    Explanation
    Keeping your work area clean and orderly is important for preventing accidents because it reduces the risk of tripping or slipping on clutter, helps to maintain clear pathways for movement, and ensures that tools and equipment are stored safely and can be easily accessed when needed. A clean and organized work area also promotes better focus and concentration, which can prevent errors and mishaps. Additionally, it helps to prevent the accumulation of dust, debris, or flammable materials that could pose a fire hazard. Overall, maintaining a clean and orderly work area is a simple yet effective way to prevent accidents and promote a safe working environment.

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  • 23. 

    Who determines the type of ear protection required for all aspect of your job?

    • Personnel in the flight surgeon office.

    • Local bioenvironmental flight personnel.

    • Fuel element shop chief.

    • Ground safety personnel.

    Correct Answer
    A. Local bioenvironmental flight personnel.
    Explanation
    Local bioenvironmental flight personnel are responsible for determining the type of ear protection required for all aspects of the job. These personnel are trained and knowledgeable about the specific environmental factors and hazards that can affect hearing, such as noise levels, chemicals, and radiation. They assess the workplace conditions and recommend appropriate ear protection based on their expertise and guidelines provided by regulatory agencies. The flight surgeon office may provide medical advice, but the local bioenvironmental flight personnel are directly responsible for determining the type of ear protection needed. The fuel element shop chief and ground safety personnel may have their own roles in ensuring workplace safety, but they are not specifically tasked with determining ear protection requirements.

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  • 24. 

    What material is an authorized sealant scraper made from?

    • Brass

    • Copper

    • Titanium

    • Plastic

    Correct Answer
    A. Plastic
    Explanation
    An authorized sealant scraper is made from plastic because plastic is a non-abrasive material that won't scratch or damage the surfaces it is used on. Plastic is also lightweight and easy to handle, making it a practical choice for a scraper tool. Additionally, plastic is resistant to chemicals and moisture, which is important for a tool that may come into contact with sealants or other substances.

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  • 25. 

    What type of seal is between the disc and the valve body on a disc-type valve?

    • O-ring

    • V-ring

    • Gasket

    • Metal-to-Metal

    Correct Answer
    A. O-ring
    Explanation
    The correct answer is O-ring. An O-ring is a type of seal that is commonly used between the disc and the valve body on a disc-type valve. It is a circular rubber ring that is placed in a groove to create a tight seal and prevent any leakage. O-rings are known for their flexibility, durability, and resistance to various fluids and temperatures, making them an ideal choice for sealing applications in valves.

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  • 26. 

    What type of technical manual would you use to troubleshoot an electrical system problem on a modern-type aircraft?

    • Fault isolation

    • General vehicle

    • Job guide

    • Maintenance

    Correct Answer
    A. Fault isolation
    Explanation
    To troubleshoot an electrical system problem on a modern-type aircraft, one would use a fault isolation manual. This type of technical manual provides detailed instructions on how to identify and isolate faults or malfunctions in the electrical system. It helps technicians systematically diagnose and fix issues by providing step-by-step procedures, diagrams, and troubleshooting techniques. The fault isolation manual is specifically designed to address electrical system problems and ensure the safe and efficient operation of the aircraft.

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  • 27. 

    Which major assembly provides the lifting for an aircraft?

    • Elevator

    • Empennage

    • Engines

    • Wings

    Correct Answer
    A. Wings
    Explanation
    The wings of an aircraft provide the lifting force necessary for flight. The shape and design of the wings generate lift by creating a pressure difference between the upper and lower surfaces of the wing. This allows the aircraft to overcome gravity and stay airborne. Elevators, empennage, and engines play important roles in controlling and propelling the aircraft, but they do not directly provide the lifting force.

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  • 28. 

    How often must the Emergency Response Plan be exercised?

    • Every 6 months

    • Every year

    • Every 18 months

    • Ever 2 years

    Correct Answer
    A. Every year
    Explanation
    The Emergency Response Plan must be exercised every year. This ensures that the plan remains up-to-date and effective in handling emergency situations. Regular exercises help identify any gaps or weaknesses in the plan and allow for necessary adjustments to be made. By conducting exercises annually, organizations can ensure that their emergency response teams are well-prepared and familiar with the procedures outlined in the plan. This frequency also allows for the inclusion of any new information or changes in regulations that may affect emergency response protocols.

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  • 29. 

    Which condition will likely result in a fuel cell fitting leak?

    • Applying torque to fitting bolts after instillation

    • Hair or lint between an o-rings and its groove

    • Installing a used but serviceable o-ring

    • Petrolatum on the surface of an o-ring.

    Correct Answer
    A. Hair or lint between an o-rings and its groove
    Explanation
    Hair or lint between an o-rings and its groove is likely to result in a fuel cell fitting leak. This is because the presence of hair or lint can prevent the o-ring from creating a proper seal with the groove, allowing fuel to escape.

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  • 30. 

    The main objective of the phase inspection is to reduce

    • Number of required inspections.

    • Number of personnel conducting inspection.

    • Out of commission time.

    • Number of hours between inspections.

    Correct Answer
    A. Out of commission time.
    Explanation
    The main objective of the phase inspection is to reduce the out of commission time. This means that during the inspection, the goal is to minimize the amount of time that the equipment or system is unavailable or not in operation. By conducting efficient and effective inspections, any necessary repairs or maintenance can be done quickly, thereby reducing the overall downtime of the equipment or system. This helps to ensure that the equipment or system can be back in service as soon as possible, minimizing any disruption or loss of productivity.

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  • 31. 

    After a permanent repair on a fuel tank is accomplished the AFTO Form 427, Aircraft Integral Fuel Tank Repair Historical Data Document, is

    • Destroyed.

    • Maintained as historical data.

    • Re-accomplished.

    • Cleared.

    Correct Answer
    A. Maintained as historical data.
    Explanation
    After a permanent repair on a fuel tank is accomplished, the AFTO Form 427 is maintained as historical data. This form serves as a record of the repair, documenting the details of the repair process, materials used, and any other relevant information. By keeping the form as historical data, it allows for future reference and tracking of the repair, ensuring that all necessary information is readily available if needed in the future.

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  • 32. 

    All of these are an example of internal distractors except

    • Daydreaming.

    • Thinking about problems.

    • Noises.

    • Boredom.

    Correct Answer
    A. Noises.
    Explanation
    Internal distractors refer to thoughts or mental processes that can distract an individual from focusing on a task. Daydreaming and thinking about problems are examples of internal distractors as they involve the mind wandering away from the present task. Boredom can also be considered an internal distractor as it can lead to decreased attention and engagement. However, noises are external stimuli that can be distracting, but they are not internal distractors as they do not originate within the mind.

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  • 33. 

    What are two ways to control FOD?

    • Tool control and Operation Clean Sweep.

    • FOD walks and FOD bags.

    • Trash detail and FOD walks.

    • Tire checks and trash removal.

    Correct Answer
    A. FOD walks and FOD bags.
    Explanation
    FOD stands for Foreign Object Debris, which refers to any object or material that is not supposed to be present in a specific area, such as an aircraft or a construction site. FOD can cause damage to equipment, pose safety risks, and lead to accidents. One way to control FOD is by conducting FOD walks, which involve regularly inspecting the area for any debris and removing it. Another way is by using FOD bags, which are specialized bags used to collect and dispose of any debris in a safe and controlled manner. These two methods help maintain a clean and safe environment, reducing the risk of FOD-related incidents.

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  • 34. 

    Nitrogen can be dangerous because it

    • Does not support life.

    • Gives off toxic fumes.

    • Is flammable.

    • Is combustible.

    Correct Answer
    A. Does not support life.
    Explanation
    Nitrogen can be dangerous because it does not support life. Unlike oxygen, which is essential for sustaining life, nitrogen is an inert gas that does not actively participate in chemical reactions necessary for living organisms. Breathing in pure nitrogen can displace oxygen in the air, leading to asphyxiation and suffocation. This makes nitrogen hazardous in confined spaces or high concentrations where it can cause a lack of oxygen and pose a serious threat to human life.

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  • 35. 

    Commanders must ensure that records of supply transactions are

    • Logged in the shop supply log.

    • Signed at the working level.

    • Kept accurate.

    • Disposed of semiannually.

    Correct Answer
    A. Kept accurate.
    Explanation
    Commanders must ensure that records of supply transactions are kept accurate. This means that it is the responsibility of the commanders to make sure that the records of supply transactions are maintained with precision and without any errors. Accuracy is crucial in supply transactions as it helps in tracking inventory, identifying any discrepancies, and ensuring efficient supply management.

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  • 36. 

    The term "custodian" as applied to the Air Force supply system refers to

    • Supervisor

    • Caretaker

    • Commander

    • Janitor

    Correct Answer
    A. Caretaker
    Explanation
    In the Air Force supply system, the term "custodian" refers to a caretaker. A caretaker is someone responsible for taking care of and managing supplies, equipment, or resources. In this context, a custodian would be responsible for ensuring the proper storage, maintenance, and distribution of supplies within the Air Force supply system. They would be in charge of keeping track of inventory, organizing supplies, and ensuring that they are readily available when needed.

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  • 37. 

    Prior to using a photo-ionization detector, what is the first item you should check?

    • Alarm conditions

    • Calibration date

    • Inspection date

    • Oxygen level

    Correct Answer
    A. Calibration date
    Explanation
    Before using a photo-ionization detector, the first item that should be checked is the calibration date. This is important because the accuracy and reliability of the detector's readings depend on regular calibration. If the calibration date is outdated or has expired, it is necessary to recalibrate the detector to ensure accurate measurements. Checking the calibration date ensures that the detector is functioning properly and providing accurate results.

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  • 38. 

    What item prevents foreign objects from holding the bypass valve open  in a dual-impeller pump?

    • An inlet screen

    • An in-line filter

    • A one-way check valve

    • A two-way check valve

    Correct Answer
    A. An inlet screen
    Explanation
    An inlet screen is a device that is placed at the inlet of a pump to prevent foreign objects from entering the pump and causing damage. It acts as a barrier, allowing only clean fluid to pass through while blocking any debris or foreign objects. In the context of a dual-impeller pump, the inlet screen plays a crucial role in preventing foreign objects from holding the bypass valve open. By filtering out any unwanted particles, the inlet screen ensures that the bypass valve remains closed and the pump operates efficiently without any obstruction.

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  • 39. 

    Which indication shows that a boost pump on a cargo aircraft  is putting out sufficient pressure?

    • PRESS LOW light goes off

    • PRESS LOW light illuminates

    • Pressure indicator reads 16 psi

    • Pressure indicator reads 20 psi

    Correct Answer
    A. PRESS LOW light goes off
    Explanation
    When the PRESS LOW light goes off, it indicates that the boost pump on the cargo aircraft is putting out sufficient pressure. This means that the pressure being generated is enough to meet the required levels, and there is no need for concern regarding low pressure.

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  • 40. 

    What principle is used to control the fuel-level control valve?

    • Pneumatic-electrical

    • Electrical-mechanical

    • Pneumatic-mechanical

    • Hydro mechanical

    Correct Answer
    A. Hydro mechanical
    Explanation
    The principle used to control the fuel-level control valve is hydro mechanical. This means that the control valve is operated by a combination of hydraulic and mechanical forces. The hydraulic system provides the necessary pressure and fluid flow to control the valve, while the mechanical components ensure precise and reliable operation.

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  • 41. 

    Approximately how much air space is left at the top of the fuel tanks of a cargo aircraft after ground refueling?

    • 1%

    • 3%

    • 5%

    • 7%

    Correct Answer
    A. 3%
    Explanation
    After ground refueling, there is approximately 3% air space left at the top of the fuel tanks of a cargo aircraft. This means that the tanks are filled up to 97% of their total capacity, leaving a small amount of space for expansion of the fuel due to temperature changes or other factors. This ensures that there is enough room for the fuel to expand without causing any damage to the tanks or the aircraft.

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  • 42. 

    What light on a bomber aircraft aerial refueling system  if all conditions are satisfied prior to boom and receptacle connection? 

    • Amber DISC light

    • Blue STATUS light

    • Green LATCHED light

    • Blue READY/NWS light

    Correct Answer
    A. Blue READY/NWS light
    Explanation
    The blue READY/NWS light indicates that all conditions are satisfied prior to boom and receptacle connection on a bomber aircraft aerial refueling system. This light serves as an indication that the aircraft is ready for the refueling process to commence.

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  • 43. 

    Which may be used to accelerate the curing of sealant?

    • Accelerator

    • Cold, dehumidified air

    • Heat

    • Moist heating pad

    Correct Answer
    A. Heat
    Explanation
    Heat may be used to accelerate the curing of sealant because it increases the rate of chemical reactions, allowing the sealant to dry and harden faster. When heat is applied to the sealant, it provides the necessary energy for the molecules to react and form stronger bonds, speeding up the curing process. This is especially useful in situations where a quick drying time is desired, such as in construction or manufacturing processes.

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  • 44. 

    Where are the self-sealing locations on a combination fuel cell?

    • Bottom and aft

    • Forward and aft

    • Top and bottom

    • Top and forward

    Correct Answer
    A. Bottom and aft
    Explanation
    The self-sealing locations on a combination fuel cell are located at the bottom and aft. This means that the fuel cell is designed to seal itself at these specific areas, preventing any leaks or spills. The bottom and aft positions are strategically chosen to ensure maximum safety and efficiency of the fuel cell system.

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  • 45. 

    When folding a bladder cell, the folds should not be located

    • Close to any cell openings.

    • In any particular symmetrical pattern.

    • On the flat portion of the folded package.

    • On compartment mounting pads.

    Correct Answer
    A. Close to any cell openings.
    Explanation
    When folding a bladder cell, it is important to avoid locating the folds close to any cell openings. This is because the folds can cause obstructions or blockages in the openings, which can hinder the proper functioning of the bladder cell. By keeping the folds away from the cell openings, the bladder cell can maintain its structural integrity and ensure the smooth flow of fluids or gases through the openings without any hindrance.

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  • 46. 

    PMEL personnel are assigned to which flight?

    • Aero space ground equipment.

    • Munitions.

    • Test measurement and diagnostic equipment.

    • Fabrication.

    Correct Answer
    A. Test measurement and diagnostic equipment.
    Explanation
    The correct answer is Test measurement and diagnostic equipment. PMEL personnel are assigned to this flight because they are responsible for maintaining and calibrating the equipment used for testing, measuring, and diagnosing various systems and components. This includes equipment used in aerospace, munitions, and fabrication, but the primary focus of PMEL personnel is on test measurement and diagnostic equipment.

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  • 47. 

    Maintenance and repair of gaseous and cryogenic servicing units are performed by which flight? 

    • Aerospace ground equipment

    • Fuels

    • Electro environmental

    • Pneumatics

    Correct Answer
    A. Electro environmental
    Explanation
    Electro environmental flight is responsible for the maintenance and repair of gaseous and cryogenic servicing units. This flight specializes in handling electrical and environmental systems, which includes servicing units that deal with gases and cryogenic substances. They ensure that these units are functioning properly and are able to provide the necessary services for aircraft operations.

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  • 48. 

    The first rule of good housekeeping is

    • Scheduled clean up time.

    • Clean floors.

    • Personal cleanliness.

    • A neat and orderly desk.

    Correct Answer
    A. Personal cleanliness.
    Explanation
    The correct answer is personal cleanliness. The question is asking for the first rule of good housekeeping, and personal cleanliness is an essential aspect of maintaining a clean and organized living space. Keeping oneself clean and practicing good hygiene habits contributes to overall cleanliness and a healthy environment.

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  • 49. 

    What should you use to prevent other maintainers of inadvertently operating devices such as landing gear and flight control surfaces.

    • Red Streamers

    • Red Tags

    • Danger Tags

    • Warning tags

    Correct Answer
    A. Warning tags
    Explanation
    To prevent other maintainers from inadvertently operating devices such as landing gear and flight control surfaces, warning tags should be used. These tags serve as a visual reminder and alert individuals about potential dangers or risks associated with operating the equipment. By attaching warning tags to these devices, it helps to ensure that proper precautions are taken and that only authorized personnel operate them, reducing the risk of accidents or damage.

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Quiz Review Timeline (Updated): Mar 19, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 06, 2016
    Quiz Created by
    Cmteg1
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