2A651 Ure (All Volumes Mix)

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Quizzes Created: 1 | Total Attempts: 82
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  • 1/100 Questions

    If you encounter engine trouble where more than one unit is at fault, you would first

    • Go back and check engine forms again
    • Replace all the units suspected to be at fault
    • Try to repair the more complex unit on the spot
    • Examine the unit that requires the least amount of time to replace
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About This Quiz

This 2A651 URE quiz covers key aspects of aircraft maintenance, including engine oil systems, maintenance operations, and engine components. It assesses technical knowledge vital for Air Force personnel, enhancing their proficiency in maintaining fleet health and operational readiness.

2A651 Ure (All Volumes Mix) - Quiz

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  • 2. 

    What is the composition of JP–8 fuel?

    • Gasoline and kerosene

    • Gasoline and diesel fuel

    • Diesel fuel and kerosene

    • Diesel fuel and aviation gasoline

    Correct Answer
    A. Gasoline and kerosene
    Explanation
    JP-8 fuel is a type of jet fuel commonly used by the military. It is a blend of kerosene and gasoline. This combination provides the necessary properties for jet engines to operate efficiently, including high energy content, low freezing point, and good lubrication. The gasoline component helps to improve the volatility and ignition characteristics of the fuel, while the kerosene component provides the necessary thermal stability and energy content.

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  • 3. 

    Which section of a jet engine introduces and burns fuel?

    • Turbine

    • Diffuser

    • Compressor

    • Combustion

    Correct Answer
    A. Combustion
    Explanation
    The section of a jet engine that introduces and burns fuel is called the combustion section. In this section, fuel is mixed with compressed air and ignited, resulting in the release of energy. The combustion process generates high temperatures and pressure, which then expand and propel the exhaust gases out of the engine, creating thrust. The other options listed, turbine, diffuser, and compressor, are different sections of a jet engine that perform different functions, such as compressing air, diffusing airflow, and extracting energy from the exhaust gases.

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  • 4. 

    What are microscopic metallic particles in the oil system called?

    • Wear metals

    • Friction metals

    • Precious metals

    • Transformation metals

    Correct Answer
    A. Wear metals
    Explanation
    Wear metals are microscopic metallic particles that are found in the oil system. These particles are generated due to the friction and wear of metal components in the system. Over time, as the oil circulates through the system, it picks up these wear metals, which can be indicators of potential mechanical issues or abnormalities in the system. Therefore, the correct answer is wear metals.

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  • 5. 

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

    • Priority Monitor Report (D18)

    • Daily Document Register (D04)

    • Due-out Validation Listing (M30)

    • Repair Cycle Asset Management Listing (D23)

    Correct Answer
    A. Daily Document Register (D04)
    Explanation
    The Daily Document Register (D04) is the supply document that provides a means for organizations to review all document numbers processed during the day by the Standard Base Supply System (SBSS). This register allows organizations to keep track of all documents processed and ensures that no document numbers are missed or overlooked. It is an important tool for maintaining accurate and up-to-date records of supply transactions.

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  • 6. 

    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 to remove any turbulence or swirling motion in the exhaust gases, allowing them to flow in a straight and consistent manner. By straightening the exhaust gas-flow, the duct helps to improve the efficiency of the exhaust system and reduce any potential back pressure, ensuring that the gases are expelled smoothly and effectively.

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  • 7. 

    Calibration and/or adjustment screws that require setting during an engine trim procedure must be

    • Replaced

    • Die marked

    • Safety sealed and/or lockwired

    • Applied a thread locking compound

    Correct Answer
    A. Safety sealed and/or lockwired
    Explanation
    During an engine trim procedure, calibration and/or adjustment screws may need to be set. To ensure that these screws remain in their correct positions and prevent any unauthorized adjustments, they must be safety sealed and/or lockwired. Safety sealing involves applying a seal or mark to indicate that the screws have been set and should not be tampered with. Lockwiring involves using a wire to secure the screws in place, further preventing any unintentional movement. These measures help maintain the accuracy and integrity of the engine trim procedure.

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  • 8. 

    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 have a preservation run and fuel system preservation accomplished. This is necessary to ensure that the engine remains in good working condition despite being idle for a long period of time. The preservation run involves running the engine for a short period to circulate the oil and prevent any build-up or deterioration. Fuel system preservation involves taking measures to protect the fuel system from corrosion and degradation. These tasks are important for maintaining the engine's performance and longevity.

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  • 9. 

    On an F100-PW–220 engine, what component permits oil to bypass the oil filter during cold weather starts?

    • Oil relief valve

    • Filter poppet valve

    • Oil pressure transmitter tap

    • Filter assembly bypass valve

    Correct Answer
    A. Filter assembly bypass valve
    Explanation
    The filter assembly bypass valve is the component that permits oil to bypass the oil filter during cold weather starts. This valve allows oil to flow directly to the engine without passing through the filter, which helps to prevent clogging and ensures that sufficient lubrication is provided to the engine during startup in cold temperatures.

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  • 10. 

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

    • 24

    • 36

    • 48

    • 60

    Correct Answer
    A. 48
    Explanation
    The correct answer is 48. Airman Leadership School (ALS) is a professional military education program for enlisted members of the United States Air Force. In order to attend ALS, one must have at least 48 months of service in the Air Force. This requirement ensures that individuals attending ALS have a sufficient amount of experience and knowledge to benefit from the leadership training provided in the program.

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  • 11. 

    Under what condition would you not receive an OAP laboratory sample report?

    • The sample is the first taken after an oil change

    • The aircraft is on TDY

    • It was a special oil sample

    • The results are normal

    Correct Answer
    A. The results are normal
    Explanation
    If the results of the laboratory sample are normal, it means that there are no abnormalities or issues found in the sample. In such a case, there would be no need to receive a report as everything is within the expected range. The report is typically provided to highlight any potential problems or abnormalities in the sample, but if the results are normal, there is no need for further action or analysis.

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  • 12. 

    Air Force occupational safety and health (AFOSH) standards are located within Air Force publication series

    • 91

    • 66

    • 127

    • 161

    Correct Answer
    A. 91
    Explanation
    The correct answer is 91. Air Force occupational safety and health (AFOSH) standards are located within Air Force publication series 91. This series specifically focuses on safety and health regulations and guidelines within the Air Force. It contains information and standards that are necessary for maintaining a safe and healthy working environment for Air Force personnel.

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  • 13. 

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

    • Safety

    • Hospital

    • Supervisor

    • Environmental

    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 charge of ensuring that employees are properly trained and equipped to protect themselves from potential hazards in the workplace. This includes teaching them how to correctly wear and use the personal protective equipment, as well as how to maintain and care for it to ensure its effectiveness.

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  • 14. 

    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 fuel from causing any damage or contamination to the fuel control system. By draining the fuel overboard, it ensures that any excess or contaminated fuel is safely removed from the system, allowing for a clean start on the next attempt.

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  • 15. 

    On the 54H60–117 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?

    • Microadjusting ring

    • Beta feedback shaft

    • Blade segment gear

    • Blade bushing

    Correct Answer
    A. Beta feedback shaft
    Explanation
    The beta feedback shaft delivers the actual propeller blade angle from the blade to the control assembly. This component is responsible for transmitting the position of the blade to the control system, allowing for precise control and adjustment of the propeller blade angle. It plays a crucial role in ensuring efficient and accurate operation of the propeller system.

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  • 16. 

    The T700 engine has a modular concept that allows for the replacement of entire

    • Motors

    • Systems

    • Subsystems

    • Components

    Correct Answer
    A. Subsystems
    Explanation
    The T700 engine's modular concept enables the replacement of entire subsystems. This means that instead of having to replace individual components or systems, the engine allows for the replacement of larger units that consist of multiple components working together. This modular approach simplifies maintenance and repair processes, as well as reduces downtime and costs associated with replacing smaller parts.

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  • 17. 

    Depot level support includes depot field teams (DFT) and

    • Contract field teams (CFT)

    • Base jet engine run crews (BJERC)

    • Oil analysis teams (OAT)

    • Slide engineer team (SET)

    Correct Answer
    A. Contract field teams (CFT)
    Explanation
    Depot level support consists of various teams that provide maintenance and support services. Among these teams, contract field teams (CFT) are included. CFTs are external contractors who are hired to provide field support and maintenance services at the depot level. They work alongside depot field teams (DFT) and other teams such as base jet engine run crews (BJERC), oil analysis teams (OAT), and slide engineer team (SET) to ensure the smooth functioning and maintenance of equipment and systems.

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  • 18. 

    What would you use to hold your tools when you cannot locate your toolbox within arm’s reach?

    • Your pocket

    • Ziploc bag

    • Parts bag

    • Tool bag

    Correct Answer
    A. Tool bag
    Explanation
    A tool bag would be the most suitable option to hold your tools when you cannot find your toolbox within arm's reach. A tool bag is specifically designed to carry and organize various tools, making it convenient to transport them. It typically has multiple compartments and pockets to keep tools secure and easily accessible. Using a tool bag ensures that your tools are protected and readily available whenever needed, making it a practical choice in such a situation.

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  • 19. 

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

    • Use maximum torque

    • Torque from left to right

    • Use a staggered sequence

    • Overtorque, loosen, and retorque

    Correct Answer
    A. Use a staggered sequence
    Explanation
    When torquing a sequence of three or more bolts, it is recommended to use a staggered sequence. This means that instead of tightening the bolts in a straight line from left to right or right to left, you should tighten them in a crisscross or diagonal pattern. This helps to distribute the torque evenly across all the bolts, ensuring that they are tightened uniformly. Using a staggered sequence reduces the risk of uneven tightening, which could lead to uneven stress distribution and potential failure of the bolts or the assembly they are securing.

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  • 20. 

    When operating a borescope, what part of the borescope illuminates the interior of the area you’re inspecting?

    • Control unit

    • Light guide tube

    • Distal tip light guides

    • Bending section lever

    Correct Answer
    A. Distal tip light guides
    Explanation
    The distal tip light guides of a borescope are responsible for illuminating the interior of the area being inspected. These light guides are located at the tip of the borescope and provide the necessary light to visualize and inspect the area of interest. They transmit light from the control unit to the distal end of the borescope, allowing for clear and detailed inspection of the interior.

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  • 21. 

    When you are using a vibration analyzer, you will be notified when a preset signal has been exceeded by

    • A horn alarm

    • Flashing red lights

    • The sound of a buzzer

    • Flashing channel indicator LED

    Correct Answer
    A. Flashing channel indicator LED
    Explanation
    When using a vibration analyzer, a flashing channel indicator LED is used to notify the user when a preset signal has been exceeded. This LED acts as a visual indicator, providing a clear and immediate alert to the user. It is a convenient way to quickly identify when the vibration levels have surpassed the desired threshold, allowing the user to take appropriate action. The use of a flashing LED ensures that the notification is easily noticeable, even in noisy or busy environments.

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  • 22. 

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

    • 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 indicators. They ensure that aircraft are properly maintained and available for scheduled flights. They also track any maintenance issues and coordinate with the necessary personnel to address them. By closely monitoring the fleet's health indicators, they can proactively identify and resolve any potential issues, ensuring the safety and efficiency of operations.

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  • 23. 

    An understanding of the operating principles of engine instruments will help you decide

    • If an engine should be removed from an aircraft

    • If the engine should be sent to the test cell

    • The meanings of the instrument readings

    • What tools are required for maintenance

    Correct Answer
    A. The meanings of the instrument readings
    Explanation
    An understanding of the operating principles of engine instruments is necessary in order to interpret the readings they provide. By understanding the meanings of the instrument readings, one can determine if there are any issues or abnormalities with the engine. This knowledge is crucial in deciding whether the engine should be removed from the aircraft for further inspection or sent to the test cell for further analysis. Additionally, understanding instrument readings helps in identifying the specific maintenance tools that may be required to address any problems detected.

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  • 24. 

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

    • Engine oil

    • Dry nitrogen

    • A leak detector

    • A soap-water solution

    Correct Answer
    A. 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 known as a bubble test. It involves applying the solution to the container's surfaces and observing for any bubbles that form. If there are leaks, the escaping air or gas will cause the solution to bubble, indicating the presence of a leak. This method is effective in identifying small leaks that may not be easily detected by other means.

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  • 25. 

    During a visual inspection, how can you tell when a fuel filter is clogged?

    • A green flag pops out of the filter

    • Fuel pressure from the fuel pump is low

    • A differential pressure indicator is actuated

    • There is no way to tell without disassembling the filter

    Correct Answer
    A. A differential pressure indicator is actuated
    Explanation
    A differential pressure indicator is actuated when a fuel filter is clogged. This means that the pressure difference between the inlet and outlet of the filter has reached a certain threshold, indicating that the filter is obstructed. This indicator provides a visual or audible signal to the operator, alerting them to the need for a filter replacement or cleaning. It allows for proactive maintenance and helps prevent potential engine damage or performance issues caused by a clogged fuel filter.

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  • 26. 

    Two units that work together to indicate the oil system is operating correctly are the oil pressure

    • Relief valve and indicator

    • Transmitter and indicator

    • Relief valve and transmitter

    • Synchronous unit and indicator

    Correct Answer
    A. Transmitter and indicator
    Explanation
    The oil pressure transmitter and indicator are two units that work together to indicate the oil system is operating correctly. The transmitter measures the oil pressure and sends a signal to the indicator, which displays the pressure reading. This allows the operator to monitor the oil pressure and ensure that it is within the desired range. If there is a problem with the oil pressure, the indicator will show a deviation from the normal reading, alerting the operator to take necessary action.

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  • 27. 

    Which characteristic is the most common cause of bearing failure?

    • Transient vibration

    • Partial loss of lubrication

    • Complete loss of lubrication

    • Stall condition over temperature

    Correct Answer
    A. Complete loss of lubrication
    Explanation
    Complete loss of lubrication is the most common cause of bearing failure. Bearings rely on lubrication to reduce friction and prevent wear and overheating. When lubrication is completely lost, the metal surfaces of the bearing come into direct contact, leading to increased friction and heat generation. This can result in rapid wear, increased noise, and ultimately bearing failure. It is important to ensure proper lubrication of bearings to prevent this common cause of failure.

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  • 28. 

    A cold compressor stall that occurs at low revolutions per minute (rpm) and is accompanied by a slight over temperature is called

    • An incipient

    • A thermal

    • A partial

    • A mild

    Correct Answer
    A. An incipient
    Explanation
    An incipient cold compressor stall refers to a stall that occurs at low rpm and is accompanied by a slight over temperature. It is considered "incipient" because it is in the early stages and has not fully developed into a complete stall. This type of stall is characterized by a decrease in airflow and disruption in the compressor's ability to compress air efficiently. The slight over temperature indicates that there is some heat buildup in the system, but it is not severe.

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  • 29. 

    The primary goal of the engine trending and diagnostics (ET&D) program is to prevent or limit damage to turbine engines by

    • Reviewing past engine accident investigation reports

    • Tracking serially controlled components and modules

    • Early detection of performance degradation and/or failures

    • Documenting engine overspeed and overtemperature conditions

    Correct Answer
    A. Early detection of performance degradation and/or failures
    Explanation
    The primary goal of the engine trending and diagnostics (ET&D) program is to detect any decline in performance or potential failures in turbine engines at an early stage. This allows for timely intervention and preventive measures to prevent or limit damage to the engines. By reviewing past engine accident investigation reports, tracking serially controlled components and modules, and documenting engine overspeed and overtemperature conditions, the program can gather valuable data and insights to identify any signs of performance degradation or failures. This proactive approach helps ensure the safety and reliability of turbine engines.

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  • 30. 

    What information is used as an aid in test facility inspections?

    • Test cell run procedures

    • Unit serial number listings

    • Periodic inspection checklists

    • Monthly requirements listings

    Correct Answer
    A. Periodic inspection checklists
    Explanation
    Periodic inspection checklists are used as an aid in test facility inspections. These checklists provide a systematic approach to ensure that all necessary inspections and evaluations are conducted regularly. They outline specific areas and items that need to be inspected, helping to ensure that no critical steps or components are missed during the inspection process. By using periodic inspection checklists, test facility inspectors can effectively assess the condition and functionality of the facility and identify any potential issues or areas for improvement.

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  • 31. 

    The master synchrophaser board located in the synchrophaser unit contains a master channel and a slave channel used by propellers

    • No. 1 and No. 2

    • No. 2 and No. 3

    • No. 3 and No. 4

    • No. 1 through 4

    Correct Answer
    A. No. 2 and No. 3
    Explanation
    The master synchrophaser board in the synchrophaser unit contains a master channel and a slave channel. The propellers use the slave channel to synchronize their rotation with the master channel. Therefore, the correct answer is No. 2 and No. 3, indicating that the synchrophaser board is used by propellers No. 2 and No. 3.

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  • 32. 

    Engines are mounted in the fixed test cell on a thrust stand or are suspended

    • By cargo straps

    • From a cradle mount

    • By a tailhook adapter

    • On the model 4100 trailer

    Correct Answer
    A. From a cradle mount
    Explanation
    Engines are typically mounted from a cradle mount. This means that the engines are secured and supported by a cradle-like structure. This method of mounting provides stability and allows for easy access to the engine during testing. It also ensures that the engine remains in a fixed position during testing, which is important for accurate measurements and analysis. Mounting the engines from a cradle mount is a common and effective way to conduct engine testing in a fixed test cell.

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  • 33. 

    What type of oil seal has soft metal as its basic composition and allows a small amount of airflow to prevent oil seepage?

    • Silicone

    • Carbon

    • Synthetic

    • Labyrinth

    Correct Answer
    A. Labyrinth
    Explanation
    A labyrinth oil seal is made up of soft metal and allows a small amount of airflow to prevent oil seepage. This type of seal consists of multiple interlocking grooves that create a tortuous path for the oil to pass through, effectively sealing the oil within the system. The soft metal composition of the seal provides flexibility and durability, ensuring a long-lasting and effective seal.

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  • 34. 

    Which method of producing thrust does a turboprop engine use?

    • Using only the energy expended through the exhaust nozzle to propel the aircraft forward

    • Using the same working fluid for propulsive force as that used within the engine

    • Accelerating a large mass of air through a small velocity change

    • Moving a small quantity of air through a large velocity change

    Correct Answer
    A. Accelerating a large mass of air through a small velocity change
    Explanation
    A turboprop engine uses the method of accelerating a large mass of air through a small velocity change to produce thrust. This is achieved by passing the air through a turbine, which is connected to a propeller. The turbine extracts energy from the hot exhaust gases and uses it to drive the propeller, which in turn accelerates a large mass of air behind it. This accelerated air creates a forward thrust, propelling the aircraft forward.

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  • 35. 

    Vane-type fuel pumps used in jet engines are similar to

    • Sliding-vane air compressors

    • Piston pump air compressors

    • Roots air compressors

    • Turbo-superchargers

    Correct Answer
    A. Sliding-vane air compressors
    Explanation
    Vane-type fuel pumps used in jet engines are similar to sliding-vane air compressors. Both types of pumps use a rotating vane or blade mechanism to create a seal and move fluid or air. In the case of fuel pumps, the vanes rotate within a cylindrical chamber, drawing in fuel and then pushing it out under pressure. Similarly, sliding-vane air compressors use vanes that slide in and out of slots in a rotor, creating compression and pushing air out. Both types of pumps rely on the same basic principle of vane movement to achieve their respective functions.

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  • 36. 

    Discharge air used for aircraft engine anti-icing to heat-critical areas is taken from which engine area?

    • Compressor

    • Combustion

    • Augmentor

    • Turbine

    Correct Answer
    A. Compressor
    Explanation
    The discharge air used for aircraft engine anti-icing is taken from the compressor. The compressor is responsible for compressing the incoming air before it enters the combustion chamber. This compressed air is then used for various purposes, including anti-icing. By taking the discharge air from the compressor, it ensures that the air is at a high enough temperature to effectively prevent ice formation on critical areas of the engine.

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  • 37. 

    How many different types of loads can be imposed on a jet engine bearing?

    • 2

    • 3

    • 4

    • 5

    Correct Answer
    A. 3
    Explanation
    There are three different types of loads that can be imposed on a jet engine bearing.

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  • 38. 

    The term Pt2 means the

    • Total (t) pressure (P) at flange 2 (2)

    • Total (t) pressure (P) at station 2 (2)

    • Temperature (t) and pressure (P) at flange 2 (2)

    • Temperature (t) and pressure (P) at station 2 (2)

    Correct Answer
    A. Total (t) pressure (P) at station 2 (2)
    Explanation
    The term Pt2 refers to the total pressure at station 2.

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  • 39. 

    What law does the C-D supersonic inlet use to slow down the airflow?

    • Ohm’s law

    • Bernoulli’s law

    • Newton’s first law

    • Newton’s third law

    Correct Answer
    A. Bernoulli’s law
    Explanation
    The C-D supersonic inlet uses Bernoulli's law to slow down the airflow. According to Bernoulli's principle, as the velocity of a fluid increases, its pressure decreases. The supersonic inlet utilizes this principle by gradually decelerating the high-speed airflow entering the inlet, which in turn reduces its pressure. This allows the airflow to be efficiently compressed and slowed down before entering the engine, ensuring optimal performance and preventing damage to the aircraft.

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  • 40. 

    On the 54H60–117 propeller, which pump(s) is/are used during propeller static operation?

    • Main pressure

    • Main scavenge

    • Standby pressure and main scavenge

    • Auxiliary pressure and auxiliary scavenge

    Correct Answer
    A. Auxiliary pressure and auxiliary scavenge
    Explanation
    During propeller static operation, the auxiliary pressure pump and the auxiliary scavenge pump are used. The auxiliary pressure pump provides pressure to the propeller system, while the auxiliary scavenge pump removes oil from the propeller system. These pumps work together to ensure proper operation and maintenance of the propeller during static operation.

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  • 41. 

    On the 54H60–117 propeller, what forces the stop levers on the low pitch stop to move outward?

    • Hydraulic pressure

    • Movable wedge

    • Dome piston

    • Servo valve

    Correct Answer
    A. Movable wedge
    Explanation
    The movable wedge forces the stop levers on the low pitch stop to move outward.

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  • 42. 

    The purpose of the turbine section is to convert

    • Energy into torque

    • Kinetic energy into airflow

    • Airflow into potential energy

    • Torque into mechanical energy

    Correct Answer
    A. Energy into torque
    Explanation
    The purpose of the turbine section is to convert energy into torque. Turbines are designed to extract energy from a fluid, such as steam or gas, and convert it into rotational motion. This rotational motion is known as torque, which can then be used to drive various mechanical devices or generate electricity. By converting energy into torque, turbines play a crucial role in various industries, including power generation, aviation, and manufacturing.

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  • 43. 

    When used for ground operation, the SGT engine can be installed on

    • Pods

    • An H-frame

    • A two-wheel trailer

    • A four-wheel trailer

    Correct Answer
    A. A four-wheel trailer
    Explanation
    The SGT engine, when used for ground operation, can be installed on a four-wheel trailer. This means that the engine can be easily transported and moved around on a trailer with four wheels. Installing it on a four-wheel trailer provides stability and ease of maneuverability, making it convenient for ground operations.

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  • 44. 

    If the input into the Fluke 8025A meter is over the range being used, what will the digital display show?

    • OL

    • OR

    • COM

    • OFF

    Correct Answer
    A. OL
    Explanation
    When the input into the Fluke 8025A meter is over the range being used, the digital display will show "OL". This stands for "Overload" and indicates that the input signal is beyond the meter's measurement capabilities. The "OL" display is a warning to the user that the input needs to be reduced or that a different range setting should be selected in order to obtain an accurate measurement.

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  • 45. 

    On a GTCP 165 engine, air for the load control system is extracted from the

    • Torus

    • Combustor

    • Turbine plenum

    • Compressor deswirl vanes

    Correct Answer
    A. Turbine plenum
    Explanation
    The correct answer is turbine plenum. In a GTCP 165 engine, the load control system requires air to operate. This air is extracted from the turbine plenum. The turbine plenum is a chamber located between the turbine and the combustion chamber. It collects the high-pressure air from the compressor and directs it towards the load control system. This air is used to control the load on the engine, ensuring optimal performance and efficiency. Extracting air from the turbine plenum allows for a reliable and consistent source of air for the load control system.

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  • 46. 

    Which type of oil pump consists of a gear and rotor within a housing?

    • Gear

    • Gerotor

    • Rotogear

    • Sliding Vane

    Correct Answer
    A. Gerotor
    Explanation
    A gerotor oil pump consists of a gear and rotor within a housing. The gear and rotor work together to create a pumping action that moves the oil through the system. This type of pump is commonly used in automotive engines and other applications where a reliable and efficient oil circulation is required. The gear and rotor design allows for smooth and consistent oil flow, making it a popular choice in many industries.

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  • 47. 

    After running an engine in augmentation in the hush house, the augmentor tube is cooled by running the engine at idle for a period of

    • 1 minute

    • 3 minutes

    • 6 minutes

    • 5 minutes

    Correct Answer
    A. 3 minutes
    Explanation
    After running an engine in augmentation in the hush house, the augmentor tube is cooled by running the engine at idle for a period of 3 minutes. This duration allows the engine to cool down gradually, preventing any potential damage or overheating to the augmentor tube. Running the engine at idle for a longer period of time would be unnecessary and inefficient, while a shorter period of time may not provide sufficient cooling. Therefore, 3 minutes is the optimal duration for cooling the augmentor tube after running the engine in augmentation.

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  • 48. 

    Which testing engine is equipped with a quick engine change (QEC) kit?

    • TF39-1C

    • F100-GE-129

    • F100-PW-220

    • F100-PW-229

    Correct Answer
    A. TF39-1C
    Explanation
    The TF39-1C testing engine is equipped with a quick engine change (QEC) kit.

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  • 49. 

    Which type of oil system stores the oil in a tank fitted to the side of the engine?

    • Dry sump

    • Wet sump

    • Cold tank

    • Hot tank

    Correct Answer
    A. Dry sump
    Explanation
    A dry sump oil system stores the oil in a separate tank located outside of the engine, typically on the side. This design allows for a larger oil capacity and better oil control compared to a wet sump system, where the oil is stored in a pan underneath the engine. The dry sump system is commonly used in high-performance and racing engines to prevent oil starvation during extreme driving conditions.

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Quiz Review Timeline (Updated): Nov 1, 2023 +

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

  • Current Version
  • Nov 01, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 26, 2013
    Quiz Created by
    Jkc135r
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