2A651H EOC Pretest 1

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  • 1/115 Questions

    When you  are assigned to an equipment maintenance squadron as an engine troop, to what flight will you most likely be attached?

    • Maintenance
    • Accessories
    • Fabrication
    • Munitions
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About This Quiz

The '2A651H EOC pretest 1' evaluates knowledge essential for Air Force maintenance roles. It covers functions of maintenance groups, operations monitoring, squadron assignments, and job-specific training, aiming to ensure readiness and efficiency in aircraft maintenance tasks.

Maintenance Quizzes & Trivia

Quiz Preview

  • 2. 

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

    • Debrief

    • Specialist

    • Deployment

    • Training

    Correct Answer
    A. Specialist
    Explanation
    As an engine troop in an aircraft maintenance squadron, you will most likely be attached to the Specialist flight. This is because engine troops are responsible for the maintenance and repair of aircraft engines, and the Specialist flight typically handles specialized tasks and responsibilities related to specific aircraft systems or components. Therefore, being assigned to the Specialist flight would align with your role and expertise in engine maintenance.

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  • 3. 

    Which program's purpose is to ensure safe and healthy working conditions for all AF employees?

    • MSDS

    • AFOSH

    • ORM

    • Flight-line saftey

    Correct Answer
    A. AFOSH
    Explanation
    AFOSH stands for Air Force Occupational Safety and Health program. Its purpose is to ensure safe and healthy working conditions for all Air Force employees. AFOSH sets standards and guidelines to prevent accidents, injuries, and illnesses in the workplace. This program covers a wide range of areas including hazard identification, risk assessment, training, and enforcement of safety regulations. By implementing AFOSH, the Air Force aims to protect its personnel and maintain a productive and efficient work environment.

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  • 4. 

    This statement applies when either the auxiliary power unit (APU) or the gas turbine compressor (GTC) is installed on C-130 aircraft.

    • GTC can only be operated while the aircraft is flying.

    • APU can only be operated while the aircraft is on the ground

    • APU can be operated whether the aircraft is on the ground or flying.

    • GTC can be operated whether the aircraft is on the ground or flying

    Correct Answer
    A. APU can be operated whether the aircraft is on the ground or flying.
    Explanation
    The APU (Auxiliary Power Unit) can be operated whether the aircraft is on the ground or flying. This means that the APU provides power to the aircraft's systems and equipment regardless of its state (on the ground or in the air). On the other hand, the GTC (Gas Turbine Compressor) can only be operated while the aircraft is flying, indicating that it is specifically designed to provide power to the aircraft's systems during flight.

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  • 5. 

    What is the purpose and goal of the AFOSH Program?

    • To protect personnel

    • MSDS

    • To identify the workcenter hazards

    • To ensure safe and healthy working conditions for all Air Force employees. Its ultimate goal is to protect personnel from work-related deaths, injuries, and illnesses.

    Correct Answer
    A. To ensure safe and healthy working conditions for all Air Force employees. Its ultimate goal is to protect personnel from work-related deaths, injuries, and illnesses.
    Explanation
    The purpose and goal of the AFOSH Program is to ensure safe and healthy working conditions for all Air Force employees. The program aims to protect personnel from work-related deaths, injuries, and illnesses. It achieves this by identifying workcenter hazards and implementing measures to mitigate them. The program also emphasizes the importance of providing appropriate training and resources to personnel to promote safety and prevent accidents or health issues in the workplace.

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  • 6. 

    What must be done to a component after removing it from the engine?

    • Preserve with fuel.

    • Wrap in barrier paper.

    • Preserve with engine oil.

    • Cap and plug all openings.

    Correct Answer
    A. Cap and plug all openings.
    Explanation
    After removing a component from the engine, it is necessary to cap and plug all openings. This is important to prevent any dust, debris, or contaminants from entering the engine and causing damage. By sealing off the openings, the component remains protected and ensures that it can be safely stored or transported without any risk of contamination. Preserving with fuel, wrapping in barrier paper, or preserving with engine oil are not suitable actions to take after removing a component from the engine.

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  • 7. 

    What should you use to check for pressure leaks on an engine/module shipping container?

    • Oil

    • Dry nitrogen

    • Leak detector

    • Soap-water solution

    Correct Answer
    A. Soap-water solution
    Explanation
    To check for pressure leaks on an engine/module shipping container, a soap-water solution should be used. This solution is commonly used in leak detection as it can easily identify any escaping air or gas. When applied to the container, if there is a leak, the solution will form bubbles at the site of the leak, indicating the presence of a pressure leak. This method is cost-effective and simple to use, making it a popular choice for checking for leaks in various industries.

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  • 8. 

    How many months must you have in the AF before you attend Airman Leadership School (ALS)?

    • 24

    • 36

    • 48

    • 18

    Correct Answer
    A. 48
    Explanation
    In order to attend Airman Leadership School (ALS) in the Air Force, you must have completed 48 months of service. ALS is a professional military education program that provides leadership training for airmen. This requirement ensures that airmen have a sufficient amount of experience and time in service before attending the school, allowing them to better apply the leadership skills and knowledge gained during the program.

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  • 9. 

    What type of sump system is an auxiliary power unit (APU) considered if the oil is not stored within the engine itself?

    • Wet

    • Dry

    • Reserve

    • Emergency

    Correct Answer
    A. Dry
    Explanation
    An auxiliary power unit (APU) is considered a dry sump system when the oil is not stored within the engine itself. In a dry sump system, the oil is stored in a separate reservoir or tank, rather than in the engine's crankcase. This allows for better oil control and lubrication, as well as improved engine performance and reliability. By keeping the oil separate from the engine, a dry sump system can also help prevent oil starvation during high-speed or high-g turns, ensuring that the engine remains properly lubricated at all times.

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  • 10. 

    What function is a task of the low pitch stop assembly? 

    • Prevents the propeller from going into the beta range when the throttle in is alpha range

    • Limits cam travel and prevents the prop from exceeding feather and reverse blade angles

    • Prevents blades from decreasing pitch if an overspeed condition occurs

    • Transmits engine torque to the blades

    Correct Answer
    A. Prevents the propeller from going into the beta range when the throttle in is alpha range
    Explanation
    The low pitch stop assembly prevents the propeller from going into the beta range when the throttle is in the alpha range. This means that it restricts the propeller from going into a range where the blades are at a low pitch angle, which is typically used for reverse thrust or fine-tuning the propeller pitch. By preventing this, the low pitch stop assembly ensures that the propeller operates within the desired pitch range and avoids any potential issues or malfunctions that could occur if the propeller went into the beta range while the throttle is in the alpha range.

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  • 11. 

    If the main filter becomes clogged, which valve opens to assure continued flow? 

    • Check

    • Bypass

    • Low pressure relief

    • High pressure relief

    Correct Answer
    A. Bypass
    Explanation
    When the main filter becomes clogged, the bypass valve opens to ensure that there is continued flow. This valve allows the fluid to bypass the clogged filter and continue moving through the system. By opening the bypass valve, the flow is redirected and the system can continue to operate, albeit with reduced filtration efficiency.

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  • 12. 

    Through which section of a jet engine is energy expended into the atmosphere, resulting in thrust?

    • Power Turbine (PT)

    • Exhaust

    • Trust Reverser (TR)

    • Combustion

    Correct Answer
    A. Exhaust
    Explanation
    The correct answer is "Exhaust" because the exhaust section of a jet engine is where energy is expended into the atmosphere, resulting in thrust. This is where the high-pressure and high-temperature gases produced by the combustion process are expelled from the engine, creating a forward force that propels the aircraft forward.

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  • 13. 

    Which instrument is used to measure atmospheric pressure?

    • Psychomotor

    • Thermometer

    • Barometer

    • Potentiometer

    Correct Answer
    A. Barometer
    Explanation
    A barometer is the instrument used to measure atmospheric pressure. It consists of a glass tube filled with mercury or other liquid, with one end closed and the other end open. The open end is placed in contact with the atmosphere, and the pressure of the air pushes the liquid up the tube. The height of the liquid column in the tube is a measure of the atmospheric pressure. Barometers are commonly used in weather forecasting and also in aviation to monitor changes in air pressure.

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  • 14. 

    The amount of twisting deflection is determined by the 

    • Pinion gear

    • Reference shaft

    • Safety coupling

    • Torque shaft

    Correct Answer
    A. Reference shaft
    Explanation
    The amount of twisting deflection is determined by the reference shaft. The reference shaft is a fixed component that serves as a point of comparison for measuring the twisting or bending of other components. It provides a stable and known reference point, allowing engineers to accurately measure and analyze the deflection or deformation of other parts in a system. By comparing the deflection of the reference shaft to the deflection of other components, engineers can assess the structural integrity and performance of the system.

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  • 15. 

    Once the synthetic oil (MIL-L-23699) container is opened, any oil not immediately used should be

    • Pour in the trashcan

    • Disposed of as used oil

    • Placed in an oil can for shop use

    • Stored in special metal cabinets until it can be used

    Correct Answer
    A. Disposed of as used oil
    Explanation
    Once the synthetic oil (MIL-L-23699) container is opened, any oil not immediately used should be disposed of as used oil. This is because once the container is opened, the oil may have been exposed to contaminants or air, which can degrade its quality and effectiveness. Therefore, it is recommended to dispose of the oil properly as used oil to prevent any potential damage or issues when using it in the future.

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  • 16. 

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

    • Ensure humidity indicator is blue.

    • Release all pressure before removing lid.

    • Ensure pressure is below 5 psi before loosening bolts.

    • Loosen bolts in a staggered pattern to prevent warping

    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 those handling the container and to prevent any potential accidents or injuries. By releasing the pressure, the lid can be safely removed without any risk of sudden release of pressure or explosion.

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  • 17. 

    A rigid borescope requires

    • An angle shot at the inspection area.

    • More skill to operate compared to a flexscope.

    • An angulation lever to control the bending section.

    • A direct and lateral straight shot at the inspection area.

    Correct Answer
    A. A direct and lateral straight shot at the inspection area.
    Explanation
    A rigid borescope requires a direct and lateral straight shot at the inspection area because it does not have the ability to bend or flex like a flexscope. This means that the operator must position the borescope in such a way that it can directly view the area of interest without any obstructions. This requires more skill and precision compared to a flexscope, which can easily navigate around corners and obstacles. Additionally, a rigid borescope does not have an angulation lever to control the bending section, further emphasizing the need for a straight shot at the inspection area.

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  • 18. 

    Which factor is not considered for borescope operator certification?

    • Experience.

    • Maturity

    • Rank.

    • Age

    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 an individual's ability to operate a borescope effectively.

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  • 19. 

    Air Force Occupational Safety and Health (AFOSH) standards are located within Air Force publication series?

    • 55

    • 66

    • 91

    • 92

    Correct Answer
    A. 91
    Explanation
    AFOSH standards are located within Air Force publication series 91. This means that the guidelines and regulations related to Occupational Safety and Health in the Air Force can be found in the publications under series 91.

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  • 20. 

    How many fuel nozzles are in the AE2100D3 engine?

    • 8

    • 12

    • 16

    • 18

    Correct Answer
    A. 16
    Explanation
    The AE2100D3 engine has 16 fuel nozzles.

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  • 21. 

    Once an overspeed condition is corrected and the pilot valve is returned to the center position, what is the result?

    • Hydraulic fluid flow to the dome assembly is increased

    • Blades will move to the feather position

    • Prop will start to underspeed

    • Prop is on-speed

    Correct Answer
    A. Prop is on-speed
    Explanation
    When the overspeed condition is corrected and the pilot valve is returned to the center position, the result is that the propeller is brought back to its intended speed. This means that the propeller is operating at the correct rotational speed, ensuring optimal performance and efficiency.

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  • 22. 

    Which type of valve is normally incorporated in an oil filter assembly?

    • Check

    • Bypass

    • Relief

    • Pressurizing

    Correct Answer
    A. Bypass
    Explanation
    A bypass valve is normally incorporated in an oil filter assembly. This valve allows oil to bypass the filter element when it becomes clogged or when the oil is cold and thick, ensuring that the engine continues to receive oil flow. This prevents damage to the engine and allows for continuous lubrication even when the filter is unable to effectively remove contaminants.

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  • 23. 

    Use extreme care when working with labyrinth seals because of their

    • Soft metal construction, these seals can be damaged easily

    • Soft metal construction, they are sharp and can cut your hand

    • Hard metal construction, they are sharp and can cut your hand

    • Hard metal construction, these seals can damage the bearing races

    Correct Answer
    A. Soft metal construction, these seals can be damaged easily
    Explanation
    Labyrinth seals are made of soft metal, which makes them susceptible to damage. The softness of the metal means that they can easily be bent, dented, or scratched, leading to a loss of effectiveness in sealing. This is especially important to consider when working with labyrinth seals because any damage to the seals can compromise their ability to prevent leakage and protect the bearing races. Therefore, it is crucial to handle them with extreme care to avoid causing any damage.

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  • 24. 

    If you were tasked to measure the clearance between two surfaces, what type of gaugewould you use? 

    • Steel-rule.

    • Micrometer

    • Dial-indicator

    • Thickness gauge.

    Correct Answer
    A. Thickness gauge.
    Explanation
    A thickness gauge would be the most suitable tool for measuring the clearance between two surfaces. This is because a thickness gauge is specifically designed to measure the distance between two surfaces, providing an accurate and precise measurement. Steel-rule, micrometer, and dial-indicator are not specifically designed for measuring clearance between surfaces and may not provide the required level of accuracy and precision.

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  • 25. 

    What is the total gear reduction ratio of the reduction gearbox (RGB)? 

    • 13,54 : 1

    • 13.54 : 1

    • 13'54 : 1

    • 1.354 : 1

    Correct Answer
    A. 13.54 : 1
    Explanation
    The total gear reduction ratio of the reduction gearbox (RGB) is 13.54 : 1.

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  • 26. 

    The requirements for storing engines in a metal container is to maintain

    • Nitrogen pressure.

    • Engine dehydration

    • Warehouse facilities

    • Ventilator plugs and caps.

    Correct Answer
    A. Nitrogen pressure.
    Explanation
    The correct answer is "nitrogen pressure." Storing engines in a metal container requires maintaining nitrogen pressure to prevent corrosion and oxidation of the engine components. Nitrogen is an inert gas that helps create a controlled and oxygen-free environment, which reduces the risk of damage to the engines during storage. By maintaining nitrogen pressure, the container can effectively protect the engines from moisture, rust, and other potential hazards that could affect their performance and lifespan.

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  • 27. 

    Carrying a handtool in your pocket is potentially hazardous because it could cause

    • Injury to you.

    • Torn clothing.

    • Electrical shock.

    • Damage to the tool.

    Correct Answer
    A. Injury to you.
    Explanation
    Carrying a handtool in your pocket is potentially hazardous because it can cause injury to you. When a tool is placed in a pocket, it can easily shift or move around, leading to accidental contact with your body. This can result in cuts, bruises, or even more serious injuries. Therefore, it is important to always carry handtools in a secure and appropriate manner to avoid any harm to yourself.

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  • 28. 

    For a borescope inspection and for a maximum benefit, which is not necessary for theinspector to have?

    • Experience.

    • Flexiblity

    • Integrity

    • Ability

    Correct Answer
    A. Flexiblity
    Explanation
    Flexibility is not necessary for the inspector to have during a borescope inspection. This is because a borescope is a rigid and fixed tool that allows for limited movement and maneuverability. The inspector does not need to be flexible in order to effectively use the borescope. However, experience, integrity, and ability are important qualities for the inspector to possess in order to successfully conduct the inspection and obtain maximum benefit from it.

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  • 29. 

    Who monitors flying and maintenance schedules, and maintains visibility of fleet health?

    • Operations Support Center

    • Logistics Support Squadron

    • Operations Support Squadron

    • Maintenance Operations Center

    Correct Answer
    A. Maintenance Operations Center
    Explanation
    The Maintenance Operations Center is responsible for monitoring flying and maintenance schedules and maintaining visibility of fleet health. They ensure that aircraft are properly maintained and serviced, and coordinate with other units to schedule maintenance activities. This allows for efficient and effective management of the fleet, ensuring that aircraft are available and in optimal condition for missions.

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  • 30. 

    What type of training is provided to help you learn the knowledge portion of your job? 

    • OJT

    • Task qualification

    • CDCs

    • NCOA

    Correct Answer
    A. CDCs
    Explanation
    CDCs stands for Career Development Courses. These courses are designed to provide training and education to individuals in order to help them learn the knowledge portion of their job. CDCs are typically self-paced and cover a wide range of topics related to the specific job or career field. They are often used in military training and are intended to enhance job performance and career progression.

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  • 31. 

    How is the AE2100D3 starter control valve actuated?

    • Pneumatically.

    • Electrically.

    • Hydraulically.

    • Hydro-electrically.

    Correct Answer
    A. Electrically.
    Explanation
    The AE2100D3 starter control valve is actuated electrically. This means that an electrical signal is used to control the valve, allowing it to open or close as needed. This method of actuation is commonly used in many systems and provides precise control and quick response times.

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  • 32. 

    What is the overall reduction ratio of the reduction gearbox's (RGB) main reduction gear train?

    • 3.124 to1

    • 13,54 to 1

    • 13.54 to 1

    • 13,80 to 1

    Correct Answer
    A. 13.54 to 1
    Explanation
    The overall reduction ratio of the reduction gearbox's main reduction gear train is 13.54 to 1. This means that for every 13.54 rotations of the input gear, the output gear will rotate once. This ratio indicates the level of reduction in speed and increase in torque that the gear train provides.

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  • 33. 

    In most modern engine, which type of turbine is normally used?

    • Reaction

    • Pulsation

    • Impulse-reaction

    • Pulsation-reaction

    Correct Answer
    A. Impulse-reaction
    Explanation
    In most modern engines, the type of turbine that is normally used is the impulse-reaction turbine. This type of turbine combines both the principles of impulse and reaction to generate power. The high-pressure steam or gas first passes through a set of fixed nozzles, where it experiences a sudden change in velocity and pressure, creating an impulse. The steam or gas then enters the moving blades, where it further expands and generates a reaction force. This combination of impulse and reaction allows for efficient power generation in modern engines.

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  • 34. 

    The amount of ram air passing through the oil cooler core is regulated by the

    • Thermostat

    • Flap actuator

    • Size of the core

    • Regulating valve

    Correct Answer
    A. Flap actuator
    Explanation
    The flap actuator is responsible for regulating the amount of ram air passing through the oil cooler core. This component controls the position of the flap, which in turn controls the airflow. By adjusting the flap position, the flap actuator can increase or decrease the amount of air passing through the core, allowing for efficient cooling of the oil. The other options, such as the thermostat, size of the core, and regulating valve, may play a role in the overall functioning of the oil cooler system, but they are not specifically responsible for regulating the amount of ram air passing through the core.

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  • 35. 

    During the “over 180 days” preservation period, the fuel system is maintained full of

    • Fuel.

    • MIL-L–7808

    • MIL-L–6081 (grade 1010).

    • Preservation fluid

    Correct Answer
    A. MIL-L–6081 (grade 1010).
    Explanation
    During the "over 180 days" preservation period, the fuel system is maintained full of MIL-L-6081 (grade 1010) fuel. This specific grade of fuel is used to preserve the fuel system during long periods of inactivity. It helps prevent corrosion and degradation of the fuel system components, ensuring that the system remains in good condition when it is eventually used again. MIL-L-7808 and preservation fluid are not suitable for this purpose.

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  • 36. 

    Which functions form a maintenance group?

    • Operations, aircraft maintenance, flying

    • Maintenance, operations, QA

    • QA, support, aircraft maintenance

    • Maintenance operations, maintenance, aircraft maintenance, and QA

    Correct Answer
    A. Maintenance operations, maintenance, aircraft maintenance, and QA
    Explanation
    The functions that form a maintenance group are maintenance operations, maintenance, aircraft maintenance, and QA. These functions are essential for ensuring the proper maintenance and operation of aircraft. Maintenance operations involve coordinating and managing maintenance activities, while maintenance refers to the actual repair and upkeep of the aircraft. Aircraft maintenance specifically focuses on the maintenance of the aircraft itself. QA (Quality Assurance) is responsible for ensuring that maintenance procedures and standards are followed correctly. Together, these functions work together to ensure the safety and reliability of the aircraft.

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  • 37. 

    What does the fifth position of the AFSC 3A652 represent?

    • Career field subdivision

    • Specific AFSC

    • Career field

    • Skill level

    Correct Answer
    A. Specific AFSC
    Explanation
    The fifth position of the AFSC 3A652 represents the specific AFSC. AFSC stands for Air Force Specialty Code, which is a code used to identify specific jobs within the Air Force. The fifth position in this code indicates the specific job within the career field of 3A652.

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  • 38. 

    What component provides the mounting pad for the bottom surface of the AE2100D3 air inlet housing?

    • PUAD

    • GMAD

    • FPMU

    • Inlet scroll case

    Correct Answer
    A. PUAD
    Explanation
    PUAD stands for Power Unit Accessory Drive. It is a component that provides the mounting pad for the bottom surface of the AE2100D3 air inlet housing.

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  • 39. 

    How many sparks per second can the AE2100D3 ignition exciters produce?

    • 2-5

    • 4-7

    • 1-3

    • 3-6

    Correct Answer
    A. 4-7
    Explanation
    The AE2100D3 ignition exciters can produce a range of 4-7 sparks per second.

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  • 40. 

    Constant speed can only occur when the throttle is positioned from

    • GND IDLE to FLT IDLE

    • FLT IDLE to TAKE OFF

    • RVS to GRND IDLE

    • RVS to FLT IDLE

    Correct Answer
    A. FLT IDLE to TAKE OFF
  • 41. 

    Which compressor section assembly disperses compressor discharge air and directs it to the combustion chambers (liners)? 

    • Compressor rotor

    • 14th stage stator vane assembly

    • Diffuser

    • Compressor air despenser

    Correct Answer
    A. Diffuser
    Explanation
    The correct answer is the diffuser. The diffuser is responsible for dispersing the compressor discharge air and directing it to the combustion chambers (liners). It is a section assembly that helps in slowing down the high-velocity air from the compressor and converting it into high-pressure air for combustion.

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  • 42. 

    Torque is transferred from the power unit to the safety coupling on the reduction gearbox (RGB) by the 

    • Compressor extension shaft

    • Reference shaft

    • Torque meter housing

    • Torque shaft

    Correct Answer
    A. Torque shaft
    Explanation
    The torque is transferred from the power unit to the safety coupling on the reduction gearbox (RGB) by the torque shaft.

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  • 43. 

    In the power section pressure oil system, which valve located in the main pump is used to bypass the excess oil?

    • Pressure-regulating

    • Breather-regulating

    • Scavenge-regulating

    • Anti-icing-regulating

    Correct Answer
    A. Pressure-regulating
    Explanation
    The valve located in the main pump that is used to bypass the excess oil in the power section pressure oil system is the pressure-regulating valve. This valve is responsible for regulating the pressure of the oil and ensuring that it does not exceed the desired level. By bypassing the excess oil, it helps maintain the proper pressure and prevent any damage or malfunction in the system.

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  • 44. 

    In the control quadrant, the throttle lever gate that separates alpha and beta ranges represent the

    • Highest degree setting on the coordinator protractor

    • Lowest degree setting on the coordinator protector

    • Highest possible power setting for flight

    • Lowest possible power setting for flight

    Correct Answer
    A. Lowest possible power setting for flight
    Explanation
    The throttle lever gate that separates alpha and beta ranges represents the lowest possible power setting for flight. This gate is used to restrict the throttle lever from being moved into the beta range, which is reverse thrust. Therefore, when the throttle lever is within the alpha range, it indicates the lowest power setting that can be achieved for normal forward flight.

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  • 45. 

    The output of what pump is sufficient to supply hydraulic pressure for normal propeller operation?

    • AUX pressure

    • Main pressure

    • Backup pressure

    • Standby pressure

    Correct Answer
    A. Main pressure
    Explanation
    The main pressure pump is responsible for supplying hydraulic pressure for normal propeller operation. This pump is designed to provide sufficient pressure to ensure the propeller functions properly. The other options, such as AUX pressure, backup pressure, and standby pressure, may have different roles or may not provide the necessary pressure for normal propeller operation.

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  • 46. 

    During feather operation, between approximately what pounds per square inch (psi) are the pressure cutout switch contacts opened?

    • 900 to 1,100

    • 300 to 500

    • 600 to 800

    • 0 to 200

    Correct Answer
    A. 600 to 800
    Explanation
    During feather operation, the pressure cutout switch contacts are opened between approximately 600 to 800 pounds per square inch (psi).

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  • 47. 

    During flight range operation, what maintains the T56 engine at a constant engine speed of 13,820 revolutions per minute (RPM)?

    • Hydro system

    • Electric system

    • Propeller governing system

    • FADEC

    Correct Answer
    A. Propeller governing system
    Explanation
    The propeller governing system is responsible for maintaining the T56 engine at a constant engine speed of 13,820 RPM during flight range operation. This system controls the pitch of the propeller blades to ensure that the engine operates at the desired speed. By adjusting the pitch, the propeller governing system can regulate the amount of power generated by the engine, allowing it to maintain a consistent RPM throughout the flight.

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  • 48. 

    When the engine is operating at a throttle setting of Flight Idle or above, what preset limit of inch-pounds of torque must be exceeded in order for the negative torque signal (NTS) system to actuate the actuator rod? 

    • -1,020 + 400

    • -1,140 + 500

    • -1,260 + or - 600

    • 1,260 + 600

    Correct Answer
    A. -1,260 + or - 600
    Explanation
    The correct answer is -1,260 + or - 600. This means that when the engine is operating at a throttle setting of Flight Idle or above, the negative torque signal (NTS) system will actuate the actuator rod if the torque exceeds -1,260 inch-pounds, with a tolerance of plus or minus 600 inch-pounds.

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  • 49. 

    Which tester is used to accomplish the checkout procedures for the T56 engine ignition system?

    • Fuel nozzle

    • Thermocouple

    • Temp datum

    • Electrical components

    Correct Answer
    A. Electrical components
    Explanation
    Electrical components are used to accomplish the checkout procedures for the T56 engine ignition system. This is because the ignition system relies on electrical components such as spark plugs, ignition coils, and control modules to generate and control the spark that ignites the fuel-air mixture in the engine. By testing these electrical components, the functionality and performance of the ignition system can be evaluated and any issues can be identified and addressed.

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