CDC 2A651: Air Force Certification Test! Trivia Quiz

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  • 1/176 Questions

    (029) If you must torque a sequence of three or more bolts,

    • Use maximum torque
    • Use a staggered sequence
    • Torque from left to right
    • Overtorque, loosen, and retorque
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About This Quiz

Study for 2A651 EOC. The program will randomly pick 25% of the questions to ask you. Passing is 65%, but you always want to strive for better. Remember this is NOT a substitute for actually opening up your volumes, make sure you read the books too!
Good luck!

CDC 2A651: Air Force Certification Test! Trivia Quiz - Quiz

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  • 2. 

    (206) to measure barometic pressure, you would use

    • Potentiometer

    • Psychrometer

    • Pyrometer

    • Barometer

    Correct Answer
    A. Barometer
    Explanation
    A barometer is the correct instrument to measure barometric pressure. A barometer is specifically designed to measure atmospheric pressure, which is commonly referred to as barometric pressure. It works by using either mercury or aneroid methods to detect the pressure exerted by the weight of the air above it. This measurement is important for weather forecasting, as changes in barometric pressure can indicate changes in weather conditions.

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  • 3. 

    (005) FOD is normally caused by

    • People

    • Animals

    • Weather

    • Mechanical failure

    Correct Answer
    A. People
    Explanation
    FOD, which stands for Foreign Object Debris, is usually caused by people. This refers to any foreign object, such as tools, parts, or debris, that is accidentally left on or near an aircraft during maintenance or construction. People can unintentionally leave objects behind, which can pose a safety risk for the aircraft. Animals, weather, and mechanical failure can also cause FOD in some cases, but people are the most common cause.

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  • 4. 

    (008) Base Supply must deliver numerous parts to numerous organizations on a prioritized basis because of what difference in each organizaiton?

    • Mission

    • Contract

    • Location

    • Type of aircraft

    Correct Answer
    A. Mission
    Explanation
    Base Supply must deliver numerous parts to numerous organizations on a prioritized basis because of the difference in each organization's mission. Each organization has its own specific goals and objectives, and the parts needed for their mission may vary. Therefore, Base Supply must prioritize and deliver the necessary parts based on the unique requirements of each organization's mission.

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  • 5. 

    (007) Who is responsible for providing you with training on how to wear, use and maintain personal protective equipment?

    • Safety

    • Hospital

    • Supervisor

    • Enviromental

    Correct Answer
    A. Supervisor
    Explanation
    The supervisor is responsible for providing training on how to wear, use, and maintain personal protective equipment. They are in a position of authority and have the knowledge and experience to educate employees on the proper procedures and guidelines for using personal protective equipment. They ensure that employees understand the importance of wearing protective equipment and are trained to use it effectively to ensure their safety in the workplace.

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  • 6. 

    (012) Which item is one that a storage time period must be assigned to ensure that it will perform satisfactory  over a specified period of time?

    • Supply

    • Shelf-life

    • Inspection

    • Bench stock

    Correct Answer
    A. Shelf-life
    Explanation
    To ensure satisfactory performance over a specified period of time, a storage time period must be assigned to the item's shelf-life. Shelf-life refers to the length of time that a product can be stored before it becomes unfit for use or consumption. By assigning a specific shelf-life to an item, it ensures that it will be used or consumed within its designated timeframe, thus guaranteeing its satisfactory performance.

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  • 7. 

    (028) What would you use to hold your tools when you cannot locate your toolbox withing arm's reach?

    • Ziplock bag

    • Parts bag

    • FOD bag

    • Toolbag

    Correct Answer
    A. Toolbag
    Explanation
    A toolbag would be the most appropriate choice to hold your tools when you cannot locate your toolbox within arm's reach. A toolbag is specifically designed to carry and organize tools, making it convenient and easy to transport them. It provides a secure and protective storage solution, ensuring that your tools remain organized and easily accessible when needed. Using a toolbag in such situations allows you to have your tools readily available and prevents them from getting lost or misplaced.

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  • 8. 

    (046) When metal is attacked by chemical corrosion, it will start

    • Deep within the metal

    • On the surface of the metal

    • Throughout the metal all at once

    • Just under the surface of the metal

    Correct Answer
    A. On the surface of the metal
    Explanation
    When metal is attacked by chemical corrosion, it will start on the surface of the metal. This is because the surface of the metal is directly exposed to the corrosive agent, such as oxygen or moisture, which initiates the chemical reaction. As the corrosion progresses, it may eventually penetrate deeper into the metal, but it typically begins on the surface.

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  • 9. 

    (003) Which program's purpose is to ensure safe and healthy working conditions for all Air Force employees?

    • ORM

    • MSDS

    • AFOSH

    • Flightline safety

    Correct Answer
    A. AFOSH
    Explanation
    AFOSH stands for Air Force Occupational Safety and Health. Its purpose is to ensure safe and healthy working conditions for all Air Force employees. AFOSH establishes and enforces safety standards and regulations, conducts inspections, and provides training and guidance to promote a culture of safety within the Air Force.

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  • 10. 

    (003) Occupational health is regulated by Air Force series

    • 91

    • 66

    • 127

    • 161

    Correct Answer
    A. 91
    Explanation
    Occupational health is regulated by Air Force series 91.

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  • 11. 

    (017) Which type of technical manual is divided into tasks that cover a particular maintenance action?

    • General equipment

    • General system

    • Fault isolation

    • Job guide

    Correct Answer
    A. Job guide
    Explanation
    A job guide is a type of technical manual that is divided into tasks that cover a particular maintenance action. It provides step-by-step instructions and guidance on how to perform specific maintenance tasks. This type of manual is useful for technicians and maintenance personnel who need detailed instructions for carrying out specific maintenance actions.

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  • 12. 

    (001) When you are assigned to an aircraft maintenance squadron as an engine troop, to what flight will you most likely be assigned?

    • Debrief

    • Training

    • Specialist

    • Deployment

    Correct Answer
    A. Specialist
    Explanation
    As an engine troop in an aircraft maintenance squadron, you will most likely be assigned to the Specialist flight. This is because as an engine troop, your expertise and responsibilities will mainly revolve around the maintenance and repair of aircraft engines. The Specialist flight is specifically designated for personnel with specialized skills and knowledge in specific areas, such as engines, avionics, or weapons systems. Therefore, it is the most suitable and logical assignment for an engine troop in an aircraft maintenance squadron.

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  • 13. 

    (006) During flightline and test cell operations, you may be exposed to

    • Acetone

    • Toluene

    • Carbon dioxide

    • Carbon monoxide

    Correct Answer
    A. Carbon monoxide
    Explanation
    During flightline and test cell operations, exposure to carbon monoxide is possible. Carbon monoxide is a colorless, odorless gas that is produced by the incomplete combustion of carbon-containing fuels. It can be present in engine exhaust and other sources in these environments. Carbon monoxide is highly toxic and can cause symptoms such as headaches, dizziness, nausea, and even death in high concentrations. Therefore, it is important for individuals working in these areas to be aware of the potential presence of carbon monoxide and take appropriate safety measures to minimize their exposure.

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  • 14. 

    (024) Depot maintenance support base-level technicians by

    • Providing technical assistance and performing repairs beyond their capability

    • Ensuring replacement parts are ordered in a timely manner

    • Notifying maintenance personnel of upcoming TCTO

    • Providing the most current TO updates to the field

    Correct Answer
    A. Providing technical assistance and performing repairs beyond their capability
    Explanation
    Depot maintenance support base-level technicians by providing technical assistance and performing repairs beyond their capability. This means that the depot maintenance support personnel assist the base-level technicians by providing expertise and assistance in repairing equipment or systems that the base-level technicians may not have the skills or knowledge to handle. They go beyond their own capabilities to ensure that the necessary repairs are completed effectively and efficiently.

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  • 15. 

    (032) What should you use for cleaning measuring tools?

    • WD-40

    • Trychlorethlene

    • Turbo-super-carb

    • Dry-cleaning solvent

    Correct Answer
    A. Dry-cleaning solvent
    Explanation
    Dry-cleaning solvent should be used for cleaning measuring tools. This is because dry-cleaning solvent is specifically designed to remove stains and dirt from delicate fabrics without causing damage. Measuring tools, such as rulers or tape measures, often have sensitive markings or mechanisms that can be easily damaged by harsh chemicals or excessive moisture. Therefore, using a dry-cleaning solvent ensures that the measuring tools are effectively cleaned without causing any harm or deterioration.

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  • 16. 

    (211) Stationary vanes positioned between rotor discs in a compressor are used to

    • Direct air and increase pressure

    • Direct hot gases rearward

    • Increase backup pressure

    • Prolong compressor life

    Correct Answer
    A. Direct air and increase pressure
    Explanation
    The stationary vanes positioned between rotor discs in a compressor are used to direct air and increase pressure. These vanes help to guide the airflow in the desired direction, ensuring that the air is directed towards the next stage of compression. By directing the air, the vanes help to increase the pressure within the compressor, allowing for more efficient compression and improved performance.

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  • 17. 

    (045) Engines inactive for over 180 days must have what accomplished?

    • Motor the engine to circulate the oil

    • Inspect reservoirs to ensure they are full

    • Visually inspect compressor for corrosion

    • Preservation run and fuel system preservation

    Correct Answer
    A. Preservation run and fuel system preservation
    Explanation
    Engines that have been inactive for over 180 days need to undergo a preservation run and fuel system preservation. This is necessary to prevent any damage or deterioration that may occur due to prolonged inactivity. A preservation run involves starting the engine and running it for a short period of time to ensure proper lubrication and circulation of oil throughout the engine. Fuel system preservation involves taking steps to protect the fuel system from corrosion and degradation during the period of inactivity. Both of these measures are important for maintaining the engine's performance and longevity.

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  • 18. 

    (004) To avoid the engine exhaust balst, what is the minimum distance in feet to the rear of the aircraft?

    • 100

    • 200

    • 300

    • 400

    Correct Answer
    A. 200
    Explanation
    To avoid the engine exhaust blast, the minimum distance in feet to the rear of the aircraft should be 200. This distance is necessary to ensure the safety of individuals and prevent any potential harm or damage caused by the forceful blast of the engine exhaust. Being too close to the rear of the aircraft can be dangerous due to the high temperatures, strong winds, and debris that may be present in the exhaust blast. Therefore, maintaining a minimum distance of 200 feet is crucial for safety.

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  • 19. 

    (203) which section of a jet engine introduces and burns fuel?

    • Turbine

    • Diffuser

    • Compressor

    • Combustion

    Correct Answer
    A. Combustion
    Explanation
    The correct answer is combustion. In a jet engine, the combustion section is where fuel is introduced and burned. This is a crucial part of the engine as it produces the hot gases that are expelled at high speed to generate thrust. The combustion process involves mixing fuel with compressed air and igniting it, resulting in the release of energy and the creation of high-pressure, high-temperature gases. These gases then pass through the turbine, where their energy is used to drive the compressor and other engine components.

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  • 20. 

    (203) which section of a jet engine keeps the compressor rotating?

    • Turbine

    • Exhaust

    • Diffuser

    • Combustion

    Correct Answer
    A. Turbine
    Explanation
    The turbine section of a jet engine keeps the compressor rotating. The turbine is connected to the compressor through a shaft, and as the hot gases from the combustion chamber pass through the turbine, they cause the turbine blades to spin. This spinning motion is then transferred to the compressor, which helps to compress incoming air and maintain the flow of air through the engine.

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  • 21. 

    (047) On the personnel maintenance platforms, the purpose of the platform safety lockpins is to

    • Prevent the platform from lowering while it is in use

    • Prevent the platform from swaying while it is in use

    • Lock the base structure while the platform is in use

    • Prevent the wheels from swiveling while it is in use

    Correct Answer
    A. Prevent the platform from lowering while it is in use
    Explanation
    The platform safety lockpins are used to prevent the platform from lowering while it is in use. These lockpins secure the platform in a raised position, ensuring the safety of the personnel working on it. By preventing the platform from lowering unexpectedly, the lockpins help to prevent accidents and injuries.

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  • 22. 

    (035) Light is transmitted to the tip of a borescope by

    • The fiber optics

    • An optical illusion bundle

    • A grounded extension cord

    • A directly magnified light source

    Correct Answer
    A. The fiber optics
    Explanation
    The correct answer is the fiber optics because fiber optics is a technology that uses thin, flexible strands of glass or plastic to transmit light signals. In the case of a borescope, the fiber optics allows light to be transmitted from a source at one end of the scope to the tip, illuminating the area being inspected. This method is commonly used in borescopes as it allows for a flexible and efficient way of transmitting light in tight spaces.

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  • 23. 

    (035) Which factor is not consdiered for borescope operator certification?

    • Experiance

    • Maturity

    • Age

    • Rank

    Correct Answer
    A. Age
    Explanation
    Age is not considered for borescope operator certification. Certification is typically based on factors such as experience, maturity, and rank. Age alone does not determine one's ability to operate a borescope effectively.

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  • 24. 

    (213) What is the most common type of fuel nozzle system?

    • Pressure-atomizing

    • Fuel-blasting

    • Fuel ejector

    • Fuel tube

    Correct Answer
    A. Pressure-atomizing
    Explanation
    Pressure-atomizing is the most common type of fuel nozzle system. This system uses pressure to atomize the fuel into small particles, allowing for efficient combustion. It is widely used in various industries, including aviation, automotive, and power generation. The pressure-atomizing system ensures better fuel distribution and combustion control, resulting in improved fuel efficiency and reduced emissions.

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  • 25. 

    (218) Before inspecting new jet engine bearings, you should

    • Separate the halves

    • Apply a preservative

    • Perform a spin check

    • Remove the preservative coating

    Correct Answer
    A. Remove the preservative coating
    Explanation
    Before inspecting new jet engine bearings, it is necessary to remove the preservative coating. This is because the preservative coating is applied to protect the bearings during storage and transportation, and it needs to be removed before the bearings can be properly inspected. Removing the preservative coating allows for a thorough examination of the bearings to ensure they are in good condition and free from any defects or damage that could affect their performance.

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  • 26. 

    (001) Which squadrons form a maintenance group?

    • Operations, aircraft maintenance, flying

    • Maintenance, operations, quality assurance

    • Quality assurance, support, aircraft maintenance

    • Maintenance operations, maintenance, aircraft maintenance, and quality assurance

    Correct Answer
    A. Maintenance operations, maintenance, aircraft maintenance, and quality assurance
    Explanation
    The squadrons that form a maintenance group are maintenance operations, maintenance, aircraft maintenance, and quality assurance. These squadrons are responsible for ensuring the proper maintenance and operation of aircraft, as well as maintaining quality standards and assurance.

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  • 27. 

    (019) How can you tell when the text or a picture in a TO has been changed?

    • The text or picture will be marked in color

    • The text or picture will be highlighted yellow

    • The word "changed" will be marked on the text or picture

    • A bold vertical black line alongside the affected text or picture

    Correct Answer
    A. A bold vertical black line alongside the affected text or picture
    Explanation
    When the text or picture in a TO has been changed, it will be indicated by a bold vertical black line alongside the affected text or picture.

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  • 28. 

    (024) What supports base-level technicians by providing technical assistance and performing any repairs beyond their responsibility/capability?

    • Field maintenance

    • Depot maintenance

    • Engine trending and diagnostics

    • Engine life-cycle management planning

    Correct Answer
    A. Depot maintenance
    Explanation
    Depot maintenance supports base-level technicians by providing technical assistance and performing any repairs beyond their responsibility/capability. This means that when base-level technicians encounter complex or advanced technical issues that they are unable to handle, depot maintenance steps in to provide the necessary expertise and support. They are responsible for performing repairs and maintenance tasks that go beyond the scope of base-level technicians, ensuring that the equipment or systems are properly maintained and functioning optimally.

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  • 29. 

    (025) The key to making the CEMS work is

    • Schedule engine replacement on jet engines

    • Accurate and timely data at the lowest level

    • Accurate and timely data at the highest level

    • Availabitlity of a storage and analysis computer

    Correct Answer
    A. Accurate and timely data at the lowest level
    Explanation
    The correct answer is accurate and timely data at the lowest level. This means that in order for the CEMS (Continuous Emissions Monitoring System) to work effectively, it is crucial to have precise and up-to-date information at the lowest level of data collection. This ensures that the system can accurately monitor and analyze emissions data in real-time, allowing for prompt action to be taken if any issues or deviations are detected. Having accurate and timely data at the lowest level also helps in identifying trends, making informed decisions, and implementing effective strategies for emission control and reduction.

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  • 30. 

    (201) " The combination of a decreaed pressure above an airfoil , and the increased pressure below the airfoil produces life" is best described as

    • Bernoulli's principle

    • Newtons first law of motion

    • Newtons second law of motion

    • Newtons third law of motion

    Correct Answer
    A. Bernoulli's principle
    Explanation
    The statement describes Bernoulli's principle, which states that as the velocity of a fluid (in this case, air) increases, the pressure decreases. This principle is applicable to airfoils, as the increased velocity of air above the airfoil causes a decrease in pressure, while the slower-moving air below the airfoil results in increased pressure. This pressure difference creates lift, allowing the airfoil (such as an airplane wing) to generate upward force and stay aloft. Therefore, Bernoulli's principle is the best explanation for the given statement.

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  • 31. 

    (048) What information is found in Part I of an AFTO Form 244?

    • Supervisory review

    • Item identification

    • Employee number blocks

    • Nonscheduled inspection blocks

    Correct Answer
    A. Item identification
    Explanation
    Part I of an AFTO Form 244 contains the information related to item identification. This means that it includes details about the specific item or equipment being inspected or maintained. This section helps in accurately identifying and tracking the item throughout the maintenance process. It may include information such as the item's name, part number, serial number, and any other relevant identification details.

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  • 32. 

    (213) Fuel that accumulates after a failed start is

    • Returned to the fuel control by tubes

    • Drained overboard by a drain system

    • Burned on the next start attempt

    • Allowed to evaporate

    Correct Answer
    A. Drained overboard by a drain system
    Explanation
    After a failed start, the fuel that accumulates is drained overboard by a drain system. This is done to prevent the excess fuel from causing any damage or safety hazards. By draining the fuel overboard, it ensures that any potential fire or explosion risks are minimized.

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  • 33. 

    (223) On an F108 engine, the radial drive shaft connects the core engine to the

    • Hydraulic actuator motor

    • Accessory drive assembly

    • Variable bleed valves

    • Fan booster rotor

    Correct Answer
    A. Accessory drive assembly
    Explanation
    The radial drive shaft on an F108 engine connects the core engine to the accessory drive assembly. This assembly is responsible for driving various accessories such as generators, hydraulic pumps, and fuel pumps. By connecting the core engine to the accessory drive assembly, the radial drive shaft allows the engine to transfer power and drive these important components.

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  • 34. 

    (006) Toxic materials are easiest to get into the body and cause rapid toxic reactions when they are in the form of

    • Aerosols

    • Liquids

    • Solids

    • Gases

    Correct Answer
    A. Gases
    Explanation
    Toxic materials in the form of gases are easiest to get into the body and cause rapid toxic reactions because gases are easily inhaled and can quickly enter the respiratory system. Once inhaled, gases can easily be absorbed into the bloodstream and distributed throughout the body, leading to rapid toxic effects. Additionally, gases can easily penetrate barriers such as the skin or protective clothing, increasing the risk of exposure and toxicity.

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  • 35. 

    (029) What type of rule should you use for measuring an inside diameter?

    • Hook

    • Narrow

    • 6-inch steel

    • Slide caliper

    Correct Answer
    A. Slide caliper
    Explanation
    A slide caliper is the appropriate tool for measuring an inside diameter. A slide caliper consists of two jaws, one of which can be inserted into the inside diameter of an object to measure its diameter accurately. This tool allows for precise measurements and is specifically designed for measuring inside diameters.

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  • 36. 

    (206) what is the sea-level atmospheric pressure at "standard day" conditions?

    • 13.5 psi

    • 14.7 psi

    • 49.94 psi

    • 40.55 psi

    Correct Answer
    A. 14.7 psi
    Explanation
    At "standard day" conditions, the sea-level atmospheric pressure is 14.7 psi. This is considered the average atmospheric pressure at sea level and is commonly used as a reference point for pressure measurements.

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  • 37. 

    (208) When two or more turbine wheels are used in a jet engine, which component is placed directly in front of each turbine wheel?

    • Diffuser

    • Jet nozzle

    • Combustion chamber

    • Turbine stator

    Correct Answer
    A. Turbine stator
    Explanation
    In a jet engine with multiple turbine wheels, the component that is placed directly in front of each turbine wheel is the turbine stator. The turbine stator is responsible for directing the flow of air or exhaust gases onto the turbine blades, which helps to optimize the efficiency and performance of the turbine. It acts as a stationary guide vane, ensuring that the air or gases flow smoothly onto the turbine blades, allowing them to extract maximum energy from the fluid stream.

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  • 38. 

    (039) Why should dust caps be installed over tube ends rather than inside them?

    • Provides a tighter fit

    • Prevents nicking of inner tube surface

    • Avoids possibility of leaving caps installed

    • Provides less contact with corrosive lubricants

    Correct Answer
    A. Avoids possibility of leaving caps installed
    Explanation
    Installing dust caps over tube ends instead of inside them avoids the possibility of leaving the caps installed. This means that there is less chance of forgetting to remove the caps before using the tube, which could lead to restricted airflow or other issues.

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  • 39. 

    (044) Prior to removing a shipping container lid, what warning must be observed?

    • Ensure humidity indicator is blue

    • Release all pressure before removing lid

    • Loosen bolts in a staggered pattern to prevent warpage

    • Ensure pressure is below 5 psi before loosening bolts

    Correct Answer
    A. Release all pressure before removing lid
    Explanation
    Before removing a shipping container lid, it is important to release all pressure. This is necessary to ensure the safety of the person opening the container and to prevent any potential accidents or injuries. By releasing the pressure, the risk of any sudden release of pressure or explosion is minimized, making it safer to remove the lid.

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  • 40. 

    (219) The bearing removal tools that are most commonly used include

    • Drift pipes and hammers

    • Bearing pullers and hammers

    • Drift pipes and arbor presses

    • Arbor presses and bearing pullers

    Correct Answer
    A. Arbor presses and bearing pullers
    Explanation
    Arbor presses and bearing pullers are commonly used bearing removal tools. Arbor presses are used to apply pressure and force to remove bearings, while bearing pullers are specifically designed to grip and extract bearings from their housing. These tools are essential in safely and efficiently removing bearings without causing damage to the surrounding components.

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  • 41. 

    (221) The recommended method of heating inner races of bearings before installing them is

    • Hot-oil bath

    • Portable heater

    • Bearing furnace

    • Hydraulic oil bath

    Correct Answer
    A. Hot-oil bath
    Explanation
    Heating the inner races of bearings before installing them is best done using a hot-oil bath. This method involves immersing the bearings in a bath of hot oil, which allows for even and controlled heating. The hot oil effectively expands the inner races, making them easier to install onto the shaft. This method ensures that the bearings are heated uniformly, reducing the risk of damage or improper installation. Portable heaters, bearing furnaces, and hydraulic oil baths may not provide the same level of control and even heating as a hot-oil bath.

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  • 42. 

    (007) Hazardous waste storage area must prevent

    • Explosions

    • Unauthorized entry

    • Overflow of materials

    • Mixing of unlike materials

    Correct Answer
    A. Unauthorized entry
    Explanation
    The correct answer is unauthorized entry. Hazardous waste storage areas must prevent unauthorized entry to ensure the safety and security of both the stored materials and the surrounding environment. Unauthorized access can lead to accidents, theft, or intentional harm, which can have serious consequences such as spills, leaks, or even explosions. Therefore, implementing measures to restrict access and ensure only authorized personnel can enter the storage area is crucial in preventing potential hazards and maintaining the integrity of the hazardous waste storage.

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  • 43. 

    (208) What directs gases onto the first-stage turbine wheel blades in a jet engine?

    • Flameholder

    • Combustion chamber

    • Turbine wheel blades

    • Turbine stator

    Correct Answer
    A. Turbine stator
    Explanation
    The turbine stator directs gases onto the first-stage turbine wheel blades in a jet engine. The turbine stator is a stationary component that is positioned in front of the turbine wheel blades. It has a series of vanes or blades that help to guide and direct the flow of gases onto the turbine wheel blades. This allows for the efficient transfer of energy from the gases to the turbine blades, which then powers the engine.

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  • 44. 

    (008) Which supply document provides a means for organizations to review all document  numbers processed during the day by the SBSS?

    • Priority Monitor Report (D18)

    • Daily Document Register (D04)

    • Due-out Validation Listing (M30)

    • Repair Cucle Asset Management Listing (D23)

    Correct Answer
    A. Daily Document Register (D04)
    Explanation
    The Daily Document Register (D04) provides a means for organizations to review all document numbers processed during the day by the SBSS. This register keeps track of the documents processed, allowing organizations to easily review and track their daily document activity. The other options, such as the Priority Monitor Report (D18), Due-out Validation Listing (M30), and Repair Cycle Asset Management Listing (D23), do not specifically provide a means for reviewing all document numbers processed during the day.

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  • 45. 

    (207) which engine component meters fuel for combustion?

    • P&D valve

    • Fuel pump

    • Fuel control

    • Fuel nozzles

    Correct Answer
    A. Fuel control
    Explanation
    The fuel control is the engine component that meters fuel for combustion. It regulates the flow of fuel to the engine based on various factors such as throttle position, engine speed, and air intake. By controlling the fuel flow, the fuel control ensures that the engine receives the correct amount of fuel for efficient combustion, leading to optimal performance and fuel efficiency.

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  • 46. 

    (036) When installing a self-tapping screw, the hole must be

    • Slightly smaller than the screw

    • The same size as the screw shank

    • Slight deeper than the length of the shank

    • Slightly shallower than the length of the screw

    Correct Answer
    A. Slightly smaller than the screw
    Explanation
    When installing a self-tapping screw, the hole must be slightly smaller than the screw. This is because the self-tapping screw is designed to create its own threads as it is being driven into the material. If the hole is the same size as the screw or slightly larger, the screw may not be able to grip the material properly and may not create secure threads. Therefore, having a hole slightly smaller than the screw ensures a tight fit and proper threading when installing the self-tapping screw.

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  • 47. 

    (045) To prepare the engine fuel system for service after depreservation, you must flush the system with

    • Oil

    • Fuel

    • PD-680

    • Calibration fluid

    Correct Answer
    A. Fuel
    Explanation
    To prepare the engine fuel system for service after depreservation, it is necessary to flush the system with fuel. This is because fuel is the appropriate substance to clean and remove any contaminants or debris that may have accumulated in the fuel system during the depreservation process. Flushing the system with fuel ensures that the engine will receive clean and uncontaminated fuel for optimal performance and efficiency.

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  • 48. 

    (216) The purpose of the exhaust duct is to

    • Swirl exhaust gas-flow

    • Equalize exhaust gas-flow

    • Straighten exhaust gas-flow

    • Modulate exhaust gas-flow

    Correct Answer
    A. Straighten exhaust gas-flow
    Explanation
    The purpose of the exhaust duct is to straighten the exhaust gas flow. This means that the duct is designed in a way that reduces turbulence and allows the exhaust gases to flow in a smooth and straight manner. Straightening the exhaust gas flow helps to improve the efficiency of the system and minimize any disruptions or blockages in the flow.

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  • 49. 

    (217) The purpose of an augmentor (afterburner) in a jet engine is to

    • Increase engine rpm

    • Reduce pressure drop

    • Augment basic engine thrust

    • Increase EGT

    Correct Answer
    A. Augment basic engine thrust
    Explanation
    The purpose of an augmentor (afterburner) in a jet engine is to increase the basic engine thrust. An augmentor is a device that injects additional fuel into the exhaust stream of a jet engine and ignites it, creating a high-temperature and high-velocity jet of exhaust gases. This additional thrust generated by the afterburner helps to increase the overall thrust output of the engine, providing a boost in performance when needed, such as during takeoff or when extra power is required.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
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  • Aug 17, 2009
    Quiz Created by
    Wafbprops

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