2A6X1 Vol. 5 Ure's (Mfe)

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  • 1/90 Questions

    Most engine montioring guages and instruments require some type of

    • Electrical valve to the indicator
    • Metal tubing for electron flow
    • Radio frequency transmitter
    • Transmitter and indicator
Please wait...
2A6X1 Vol. 5 Ure
About This Quiz

This quiz assesses knowledge in engine troubleshooting for aircraft maintenance, focusing on practices, troubleshooting charts, and understanding system functions within the F100-PW-220 engine. It is essential for aerospace maintenance professionals.

Quiz Preview

  • 2. 

    Using the wrong cleaning agent on a jet engine part

    • Has no effect

    • Could destroy it

    • Only causes minor etching

    • Is acceptable as long as the part comes clean

    Correct Answer
    A. Could destroy it
    Explanation
    Using the wrong cleaning agent on a jet engine part could destroy it. Jet engine parts are made of delicate materials that can be easily damaged by harsh chemicals or cleaning agents. Using the wrong cleaning agent could cause corrosion, erosion, or other forms of damage to the part, leading to its destruction. It is important to use the correct cleaning agent specifically designed for jet engine parts to ensure their proper maintenance and longevity.

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  • 3. 

    The oil pressure indicator receives an electrical signal from the

    • Gyro

    • Transmitter

    • Hydraulic unit

    • Synchronous unit

    Correct Answer
    A. Transmitter
    Explanation
    The oil pressure indicator receives an electrical signal from the transmitter. The transmitter is responsible for converting the oil pressure into an electrical signal that can be interpreted by the indicator. This allows the indicator to accurately display the oil pressure level in the system.

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  • 4. 

    Making general entries on the test cell engine log sheet, what should you do with the engine model and serial number?

    • Type these items

    • Check past records

    • Enter these only after test is complete

    • Verify these numbers on the engine data plate

    Correct Answer
    A. Verify these numbers on the engine data plate
    Explanation
    When making general entries on the test cell engine log sheet, it is important to verify the engine model and serial number on the engine data plate. This ensures that the correct and accurate information is recorded on the log sheet. By checking the numbers on the engine data plate, any discrepancies or errors can be avoided, and the log sheet can be filled out correctly.

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  • 5. 

    To become an expert troubleshooter, you must

    • Be a 7-level

    • Have at least 5 years experience

    • Attend college courses in troubleshootin techniques

    • Understand th function of each unit within each system

    Correct Answer
    A. Understand th function of each unit within each system
    Explanation
    To become an expert troubleshooter, it is essential to understand the function of each unit within each system. This knowledge allows the troubleshooter to identify and diagnose problems accurately. Without understanding how each unit operates and contributes to the overall system, it would be challenging to troubleshoot effectively. The other options mentioned, such as being a 7-level, having experience, and attending college courses, may enhance troubleshooting skills but are not as crucial as understanding the function of each unit within each system.

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  • 6. 

    The engine fuel-flow indicating system of most jet powered aircraft contains a fuel-flow

    • Transmitter and a float valve

    • Control valve and a float valve

    • Transmitter adn a fuel-flow indicator

    • Control valve and a fuel-flow transcriber

    Correct Answer
    A. Transmitter adn a fuel-flow indicator
    Explanation
    The engine fuel-flow indicating system of most jet powered aircraft consists of a fuel-flow transmitter and a fuel-flow indicator. The transmitter measures the rate at which fuel is flowing to the engine and sends this information to the fuel-flow indicator. The indicator then displays this information to the pilot, allowing them to monitor the fuel consumption of the aircraft.

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  • 7. 

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

    • Transmitter and indicator

    • Relief valve and indicator

    • Relief valve and transmitter

    • Synchronous unit and indicator

    Correct Answer
    A. Transmitter and indicator
    Explanation
    The correct answer is transmitter and indicator. The oil pressure transmitter measures the pressure in the oil system and sends a signal to the oil pressure indicator, which displays the pressure reading. These two units work together to indicate whether the oil system is operating correctly.

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  • 8. 

    When an engine arrives for a test run at the test cell, it must

    • Only need replacement of minor parts

    • Be operable with all known discrepancies corrected

    • Have the fuel line disconnected from the pump inlet

    • Be in need of only minor bits and pieces to be torqued

    Correct Answer
    A. Be operable with all known discrepancies corrected
    Explanation
    When an engine arrives for a test run at the test cell, it must be operable with all known discrepancies corrected. This means that the engine should be in a condition where it can function properly and all issues or problems that were previously identified have been fixed. This ensures that the engine can be tested accurately and any performance or operational data obtained will be reliable. It also indicates that the engine has undergone necessary repairs or maintenance to address any known problems before the test.

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  • 9. 

    aircraft power plant and engine intermediate maintenance technical order (TO) contain information on troubleshootin. This information is presented in the form of  

    • Fix-it diagrams

    • Power plant charts

    • Mechanical drawings

    • Troubleshooting charts

    Correct Answer
    A. Troubleshooting charts
    Explanation
    The correct answer is troubleshooting charts. Aircraft power plant and engine intermediate maintenance technical orders (TO) provide information on troubleshooting. This information is typically presented in the form of troubleshooting charts, which help technicians identify and resolve issues with the power plant and engine systems. These charts outline a step-by-step process to diagnose and fix problems, making them an essential resource for maintenance personnel.

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  • 10. 

    Responsibility for the proper preventive maintenance of a test cell facility rest with the

    • Individuals assigned

    • Civil engineer squadron

    • Equipment maintenance squadron

    • Aerospace ground equipment (AGE) flight

    Correct Answer
    A. Individuals assigned
    Explanation
    The correct answer is individuals assigned. The responsibility for the proper preventive maintenance of a test cell facility rests with the individuals who are assigned to it. This means that it is the responsibility of the specific individuals who are assigned to the test cell facility to ensure that preventive maintenance is carried out effectively and regularly. This may include tasks such as regular inspections, cleaning, and servicing of equipment to prevent any potential issues or breakdowns.

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  • 11. 

    On a disassembled engine, a visual inspecton of the combustion chamber is preferred over a borescope inspection because

    • The borescope may not alway be available

    • Removal of the combustion chamber is quicker

    • You culd spot defects that have been missed with the borescope

    • The limits for a visual inspection are not as tight as those for a borescope

    Correct Answer
    A. You culd spot defects that have been missed with the borescope
    Explanation
    A visual inspection of the combustion chamber on a disassembled engine is preferred over a borescope inspection because it allows for the possibility of spotting defects that may have been missed with the borescope. This suggests that a visual inspection provides a more comprehensive view of the combustion chamber, potentially revealing any hidden or subtle defects that the borescope may have overlooked.

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  • 12. 

    Through extensive testin, engine maufacturers determine how long a particular part should last. this known as the

    • Anticipated failure rate

    • Guaranteed date

    • Drop dead date

    • Service life

    Correct Answer
    A. Service life
    Explanation
    Engine manufacturers determine the expected duration that a specific part should last through extensive testing. This duration is referred to as the "service life." It indicates the estimated lifespan of the part before it is expected to fail or require replacement.

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  • 13. 

    Which type of vibration transducer is made up of certain cermanic comppunds and natural crystals?

    • Velocity

    • Phase log

    • Displacement accelerometer

    • Piezoelectric accelerometer

    Correct Answer
    A. Piezoelectric accelerometer
    Explanation
    A piezoelectric accelerometer is made up of certain ceramic compounds and natural crystals. These materials have the property of generating an electric charge when subjected to mechanical stress or vibration. This makes them ideal for use in vibration transducers, as they can convert mechanical vibrations into electrical signals. Therefore, a piezoelectric accelerometer is the correct answer for the type of vibration transducer made up of certain ceramic compounds and natural crystals.

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  • 14. 

    Which of these is not considered a cause of foreign object damge (FOD)?

    • Formation of ice

    • Ingestion of rocks

    • Ingestion of bolts

    • Failure of internal parts

    Correct Answer
    A. Failure of internal parts
    Explanation
    Failure of internal parts is not considered a cause of foreign object damage (FOD) because FOD refers to damage caused by foreign objects that are not part of the aircraft or its components. Formation of ice, ingestion of rocks, and ingestion of bolts are all examples of foreign objects that can cause FOD. However, failure of internal parts is a mechanical issue within the aircraft itself and is not considered a foreign object.

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  • 15. 

    Whch inspection is conducted by maintenance personnel after an occurrence of a specific or unuaual condition?

    • Special

    • Calendar

    • Acceptance

    • Time replacement item

    Correct Answer
    A. Special
    Explanation
    After a specific or unusual condition occurs, maintenance personnel conduct a special inspection. This inspection is carried out to evaluate the condition and determine any necessary repairs or adjustments. Unlike regular inspections, special inspections focus on addressing the specific issue that occurred and ensuring that it is properly resolved.

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  • 16. 

    The two types of test cells currently used in the Air Force are

    • Fixed and portable

    • Single and combined

    • Permanent and temporary

    • Functional and progressive

    Correct Answer
    A. Fixed and portable
    Explanation
    The correct answer is fixed and portable. This is because the question asks for the two types of test cells currently used in the Air Force, and the options provided are fixed and portable, single and combined, permanent and temporary, and functional and progressive. Out of these options, only fixed and portable are types of test cells.

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  • 17. 

    You can get information such as temperature and barometric pressure from equipment at the tecst cell sie or from

    • The control tower

    • Information on the radio

    • The local weather station

    • Your immeditate supervisor

    Correct Answer
    A. The control tower
    Explanation
    The control tower is the correct answer because it is responsible for monitoring and controlling all aircraft movements within the airport's airspace. They have access to real-time information such as temperature and barometric pressure through sophisticated equipment and weather monitoring systems. The control tower provides crucial weather updates to pilots, ensuring safe and efficient operations.

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  • 18. 

    A typical jet engine exhaust gas temperaure (EGT) indicating system contains thermocouples, leads, an indicator, and

    • A resistor

    • A turbine inlet

    • A control valve

    • An exhaust duct

    Correct Answer
    A. A resistor
    Explanation
    A typical jet engine exhaust gas temperature (EGT) indicating system contains thermocouples, leads, an indicator, and a resistor. The resistor is a crucial component in the system as it helps to calibrate and regulate the temperature readings from the thermocouples. It is used to provide a known reference temperature for comparison, allowing accurate measurement and indication of the EGT. Without the resistor, the system would not be able to provide reliable and consistent temperature readings, making it an essential part of the EGT indicating system.

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  • 19. 

    What kind of engine vibration does not persist, but comes and goes?

    • Forced

    • Transient

    • Resonance

    • Externally excited

    Correct Answer
    A. Transient
    Explanation
    Transient engine vibration refers to vibrations that occur for a short duration and then disappear. These vibrations are typically caused by temporary factors such as changes in operating conditions or the interaction of different engine components. Unlike other types of engine vibrations like forced, resonance, or externally excited, transient vibrations are not persistent and do not continue for an extended period.

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  • 20. 

    What is used to support the fan and low pressure turbine?

    • Blades

    • Bearings

    • Brackets

    • Bushings

    Correct Answer
    A. Bearings
    Explanation
    Bearings are used to support the fan and low pressure turbine. Bearings are mechanical components that reduce friction between moving parts and support the load. In this case, they provide support to the fan and low pressure turbine, allowing them to rotate smoothly. Without bearings, the fan and turbine would experience increased friction, leading to excessive wear and decreased efficiency. Therefore, bearings play a crucial role in supporting and maintaining the proper functioning of these components.

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  • 21. 

    Which piece of test equipment is used to troubleshoot a jet fuel starter (JFS) problem on an F-16 aircraft?

    • Supervisory control system (SCS) test set

    • Mach number (Mn) simulator test set

    • Engine start system (ESS) tester

    • Remote trimmer

    Correct Answer
    A. Engine start system (ESS) tester
    Explanation
    The engine start system (ESS) tester is used to troubleshoot a jet fuel starter (JFS) problem on an F-16 aircraft. This test equipment is specifically designed to diagnose and analyze the functionality of the engine start system, which includes the jet fuel starter. By using the ESS tester, technicians can identify any issues or malfunctions within the JFS and perform necessary repairs or maintenance to ensure proper functioning of the aircraft's engine start system.

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  • 22. 

    To borescope the high-pressure turbine (HPT) rotor blades, rotate the rear compressor by using the core engine rotationg device on the

    • Variable nozzle

    • Accessory gearbox

    • Low pressure compressor

    • Borescope light guide cable

    Correct Answer
    A. Accessory gearbox
    Explanation
    The correct answer is the accessory gearbox. To borescope the high-pressure turbine (HPT) rotor blades, the rear compressor needs to be rotated. This rotation is achieved by using the core engine rotating device, which is connected to the accessory gearbox. Therefore, the accessory gearbox is the component that allows for the rotation of the rear compressor, enabling the borescoping of the HPT rotor blades.

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  • 23. 

    The fuel-flow indicator indicates the rate of fuel-flow as

    • Pounds per hour

    • Gallons per hour

    • Pounds per minute

    • Gallons per second

    Correct Answer
    A. Pounds per hour
    Explanation
    The fuel-flow indicator is a device that measures the rate at which fuel is flowing through the system. It provides information about the amount of fuel consumed over a specific period of time. The most commonly used unit for measuring fuel flow is pounds per hour, as it provides a standardized measurement across different aircraft and fuel types. This allows pilots and maintenance personnel to accurately monitor fuel consumption and make informed decisions regarding fuel management.

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  • 24. 

    The engine remote trimmer enables you to adjust the

    • Fuel enrchment valve without being under the engine

    • Fuel flow transmitter while under the engine

    • Fuel control without being under the engine

    • Fuel pump while under the engine

    Correct Answer
    A. Fuel control without being under the engine
    Explanation
    The engine remote trimmer allows you to adjust the fuel control without needing to be physically under the engine. This means that you can make changes to the fuel control system from a remote location, which is convenient and safer than having to access the engine directly.

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  • 25. 

    Which F-16 operational check allows you to start the jet fuel satrty (JFS) without advancing the throttle to idle or supplying fuel to the aircraft engine?

    • Dry motoring

    • Wet motoring

    • Bleed schedule

    • Interface operational

    Correct Answer
    A. Dry motoring
    Explanation
    Dry motoring is the correct answer because it is an operational check that allows starting the Jet Fuel Start (JFS) without advancing the throttle to idle or supplying fuel to the aircraft engine. This check is performed to ensure that the JFS is functioning properly and can provide the necessary airflow and pressure to start the engine. By using dry motoring, the JFS can be tested without the risk of starting the engine or introducing fuel into the system.

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  • 26. 

    Before moving an aircraft into the hush house, you must inspect the aircraft

    • Red streamers

    • And its forms

    • Flight station

    • Forms

    Correct Answer
    A. And its forms
    Explanation
    Before moving an aircraft into the hush house, it is necessary to inspect the aircraft and its forms. This means that not only the physical condition of the aircraft should be checked, but also any required documentation or paperwork related to the aircraft should be reviewed. This ensures that the aircraft is in proper working order and that all necessary paperwork is in order before it is moved into the hush house.

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  • 27. 

    Which engine area should be checked for foreign object damage (FOD) prior to operation on the test cell facility?

    • Fuel control

    • Turbine area

    • Inlet to the oil pump

    • Inlet to the fuel pump

    Correct Answer
    A. Turbine area
    Explanation
    Foreign object damage (FOD) refers to any damage caused by foreign objects, such as debris or particles, entering the engine. The turbine area is the part of the engine where combustion occurs and where the turbine blades are located. It is a critical area that is susceptible to FOD, as any foreign objects entering this area can cause damage to the turbine blades, leading to engine malfunction or failure. Therefore, prior to operation on the test cell facility, it is important to check the turbine area for any signs of FOD to ensure the engine's proper functioning.

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  • 28. 

    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
    Understanding the operating principles of engine instruments is important in order to interpret the readings they provide. By understanding the meanings of the instrument readings, one can determine the current condition and performance of the engine. This knowledge is crucial in making decisions such as whether the engine should be removed from the aircraft or sent to the test cell for further evaluation. Additionally, understanding the instrument readings can also help identify any maintenance or repair needs and determine the tools required for maintenance.

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  • 29. 

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

    • From cargo straps

    • From a cradle mount

    • From a tailhook adapter

    • On the model 4100 trailer

    Correct Answer
    A. From a cradle mount
    Explanation
    The engines are mounted from a cradle mount. This means that the engines are secured and supported by a cradle-like structure. This method allows for stability and ease of testing, as the engines can be easily attached and detached from the cradle mount. It also ensures that the engines are securely held in place during testing, preventing any movement or accidents.

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  • 30. 

    Defects (such as cracks) that appear on the combustion chamber are aggravated by

    • Thermal cycles

    • Low cycle fatigue

    • Borescope inspections

    • Combustion chamber removal

    Correct Answer
    A. Thermal cycles
    Explanation
    Thermal cycles refer to the repeated heating and cooling of the combustion chamber in an engine. These cycles cause expansion and contraction of the materials, which can lead to the formation or worsening of defects such as cracks. As the chamber heats up and cools down, the stress on the materials increases, making them more susceptible to damage. Therefore, thermal cycles aggravate the defects that appear on the combustion chamber.

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  • 31. 

    All of the options listed below are proper troubleshooting practices except

    • Checking the applicable trouble areas

    • Understanding the fucnction of each engine unit

    • Performing easy checks, then going to more difficult checks

    • Inspecting other areas after isolating the trouble between points

    Correct Answer
    A. Inspecting other areas after isolating the trouble between points
    Explanation
    Inspecting other areas after isolating the trouble between points is not a proper troubleshooting practice because it can lead to wasting time and resources. Once the trouble has been isolated between specific points, it is more efficient to focus on those points and perform targeted checks and inspections to identify the root cause of the problem. Inspecting other areas before fully understanding the issue between the identified points can cause unnecessary confusion and delay in resolving the problem.

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  • 32. 

    The two primary units of the tachometer indicating system are the tachometer generator and tachometer

    • Indicator

    • Fuse panel

    • Transformer

    • Thermocouple

    Correct Answer
    A. Indicator
    Explanation
    The tachometer indicating system consists of two primary units: the tachometer generator and the tachometer indicator. The tachometer generator is responsible for generating the electrical signal based on the rotational speed of the engine. This signal is then sent to the tachometer indicator, which displays the RPM (revolutions per minute) of the engine on a gauge or digital display. Therefore, the correct answer is "indicator" as it is one of the primary units of the tachometer indicating system.

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  • 33. 

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

    • Test cell run procedures

    • Unit serial number listings

    • Monthly requirements listings

    • Periodic inspection checklists

    Correct Answer
    A. Periodic inspection checklists
    Explanation
    Periodic inspection checklists are used as an aid in test facility inspections. These checklists provide a systematic and comprehensive list of items that need to be inspected during a specific period. They ensure that all necessary areas, equipment, and procedures are thoroughly examined and meet the required standards. By using periodic inspection checklists, test facility inspectors can easily track and document any issues or deficiencies, allowing for timely corrective actions to be taken.

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  • 34. 

    During vibration analysis, why is it necessary to meausre all parameters to identify a vibration source?

    • The compressor rotor is a freely rotating mass

    • The main rotor functions as an inflexible system

    • A change in mechanical condition will not be detected

    • Displacement may be the same in two completely differnt problems

    Correct Answer
    A. Displacement may be the same in two completely differnt problems
    Explanation
    When conducting vibration analysis, it is necessary to measure all parameters to identify a vibration source because displacement alone may not provide enough information. Displacement refers to the distance an object moves from its equilibrium position during vibration. However, different vibration sources can result in the same displacement, making it difficult to pinpoint the exact cause of the vibration. By measuring all parameters such as frequency, amplitude, and phase, a more comprehensive analysis can be performed, allowing for a more accurate identification of the vibration source.

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  • 35. 

    If an engine stalls or surges during a test cell run, you should investigate the

    • Ignition exciter

    • Oil pressure pump

    • Thrust reverser pump

    • Variable stator vanes

    Correct Answer
    A. Variable stator vanes
    Explanation
    If an engine stalls or surges during a test cell run, the variable stator vanes should be investigated. Variable stator vanes are responsible for controlling the airflow and pressure within the engine. If these vanes are malfunctioning or not operating correctly, it can cause disruptions in the engine's performance, leading to stalling or surging. Therefore, investigating the variable stator vanes is crucial in identifying and resolving the issue.

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  • 36. 

    Defects (such as cracks) found during combustion chamber borescope inspections

    • Are continually monitored as long as they are within limits

    • Requried engine removal, even if thay are within limits

    • Require welding, even if they are within limits

    • Are unacceptable; you must replace the part

    Correct Answer
    A. Are continually monitored as long as they are within limits
    Explanation
    During combustion chamber borescope inspections, defects such as cracks are continually monitored as long as they are within limits. This means that if the defects do not exceed the acceptable limits set by the inspection criteria, they do not require immediate action such as engine removal or welding. However, they are still monitored to ensure that they do not worsen or exceed the limits in the future. Replacing the part is only necessary if the defects become unacceptable and exceed the specified limits.

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  • 37. 

    A basic post-flight inspection (BPO) is done

    • Within the thruflight inspection

    • After the first flight of the day

    • With the end-of-runway inspection

    • After the last flight of the flying period

    Correct Answer
    A. After the last flight of the flying period
    Explanation
    The correct answer is "after the last flight of the flying period." A basic post-flight inspection (BPO) is conducted after the last flight of the flying period to ensure that the aircraft is in a safe and operational condition before it is parked or stored. This inspection allows for any issues or damages that may have occurred during the flight to be identified and addressed before the aircraft is used again. Conducting the BPO after the last flight of the flying period ensures that the aircraft is thoroughly inspected and ready for the next day's operations.

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  • 38. 

    After reviewing the aircraft/engine forms, where should you begin troubleshooting?

    • Discuss problem with other journeymen in the shop

    • Check each part of every system

    • Examine the most complex unit

    • Observe gauge indications

    Correct Answer
    A. Observe gauge indications
    Explanation
    When troubleshooting an aircraft/engine issue, it is important to start by observing gauge indications. This is because gauge indications provide valuable information about the performance and condition of various systems. By observing the gauge indications, one can identify any abnormalities or deviations from normal operating parameters, which can help in narrowing down the potential causes of the problem. This initial step can save time and effort by providing a starting point for further investigation and troubleshooting.

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  • 39. 

    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

    • 9 minutes

    Correct Answer
    A. 3 minutes
    Explanation
    After running an engine in augmentation in the hush house, the augmentor tube needs to be cooled down. This is done by running the engine at idle for a period of 3 minutes. This allows the hot gases in the augmentor tube to dissipate and the temperature to decrease, preventing any potential damage or overheating. Running the engine at idle for a longer period of time, such as 6 or 9 minutes, may not be necessary and could waste fuel and time. Running the engine at idle for only 1 minute may not be sufficient to fully cool down the augmentor tube.

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  • 40. 

    The exhaust nozzle position indicating system found on engines with afterburners is important because it

    • Helps the pilot determine engine power

    • Helps the pilot determine fuel consumption

    • Gives the pilot indications of electrical failures

    • Aids the pilot in selection of proper altitude levels

    Correct Answer
    A. Helps the pilot determine engine power
    Explanation
    The exhaust nozzle position indicating system found on engines with afterburners is important because it helps the pilot determine engine power. This system provides the pilot with information about the position of the exhaust nozzle, which directly affects the engine's thrust output. By knowing the position of the nozzle, the pilot can accurately gauge the amount of power being produced by the engine, allowing for better control and optimization of engine performance.

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  • 41. 

    you cna find written instruction for safe flight line vehicle operations in  

    • AFI 36-2903

    • AFOSH STD 91-100

    • The flight line job guide (JG)

    • The intermediate maintenance TO

    Correct Answer
    A. AFOSH STD 91-100
    Explanation
    The correct answer is AFOSH STD 91-100. This document provides written instructions for safe flight line vehicle operations. The other options listed are not specifically related to flight line vehicle operations. AFI 36-2903 is the Air Force instruction for dress and appearance of Air Force personnel. The flight line job guide (JG) is a general guide for various job duties on the flight line. The intermediate maintenance TO (Technical Order) is a manual for maintenance procedures and operations. Therefore, AFOSH STD 91-100 is the most relevant document for safe flight line vehicle operations.

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  • 42. 

    During an inspection of the hush house you are not required ot check the

    • Engine being tested

    • Concrete deterioration

    • Fire suppression system

    • Engine tie-down assemblies

    Correct Answer
    A. Engine being tested
    Explanation
    During an inspection of the hush house, the engine being tested does not need to be checked. This is because the purpose of the hush house is to reduce noise and contain the sound of the engine being tested. Therefore, it is assumed that the engine is already in proper working condition and does not need to be inspected during this specific inspection.

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  • 43. 

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

    • TF39-1C

    • F110-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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  • 44. 

    Whit is used to indicate the amount of thrust a dual-compressor engine is producing?

    • Engine pressure ratio (EPR

    • Exhaust gas temperature (EGT

    • Revolutions per minute (RPM

    • Turbine inlet temperature (TIT

    Correct Answer
    A. Engine pressure ratio (EPR
    Explanation
    The engine pressure ratio (EPR) is used to indicate the amount of thrust a dual-compressor engine is producing. EPR is a measure of the pressure difference between the compressor inlet and the turbine outlet, which directly relates to the engine's performance and thrust output. By monitoring the EPR, pilots and engineers can assess the engine's efficiency and make necessary adjustments to optimize its performance.

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  • 45. 

    One type of overheat detector unit used on aircraft engines consists of a hollow stailess-steel tube that covers

    • One gold contact

    • Two silver contacts

    • Three bronze contacts

    • Four copper contacts

    Correct Answer
    A. Two silver contacts
    Explanation
    The correct answer is two silver contacts. The overheat detector unit on aircraft engines consists of a hollow stainless-steel tube that covers two silver contacts. These contacts are designed to detect excessive heat and trigger a warning or shut off the engine if necessary. The silver contacts have good electrical conductivity and are able to accurately detect temperature changes, making them suitable for this application.

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  • 46. 

    In the fixed test cell, air for the engine intake comes through baffles located on the

    • Floor of the test cell

    • Ceiling of the test cell

    • Side walls of the test cell

    • Front doors of the test cell

    Correct Answer
    A. Ceiling of the test cell
    Explanation
    In the fixed test cell, the air for the engine intake comes through baffles located on the ceiling of the test cell. This means that the air is being drawn in from the top of the test cell. The baffles help to control the flow of air and ensure that it is directed towards the engine intake. By having the intake located on the ceiling, it allows for a more efficient and controlled airflow into the engine.

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  • 47. 

    In addition to determining the condition of a repaired or overhauled engine, you also test engines

    • For training practice

    • Inaircraft that have been washed

    • That have severe foreign object dame (FOD) damage

    • That have been involved in an incident or a mishap

    Correct Answer
    A. That have been involved in an incident or a mishap
    Explanation
    Engines that have been involved in an incident or a mishap need to be tested in addition to determining the condition of a repaired or overhauled engine. This is because the incident or mishap may have caused damage or affected the performance of the engine. Testing these engines is important to ensure their functionality and safety before they are put back into service. The other options mentioned, such as training practice, in aircraft that have been washed, or with severe foreign object damage, may also require engine testing, but the primary focus in this case is on engines that have been involved in an incident or mishap.

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  • 48. 

    What inspection is done on aircraft parts that require infrequent inspections?

    • Perodic (PE)

    • Basic post-flight (BPO)

    • Hourly post-flight

    • Home station check (HSC)

    Correct Answer
    A. Perodic (PE)
    Explanation
    Periodic (PE) inspections are done on aircraft parts that require infrequent inspections. These inspections are carried out at specified intervals, usually based on flight hours, calendar time, or cycles, to ensure the continued airworthiness of the aircraft and its components. These inspections involve a thorough examination of various systems, structures, and components to identify any signs of wear, damage, or deterioration that may affect the safe operation of the aircraft.

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  • 49. 

    The fuel system component of a jet engine that operates by using water wheel concept is the

    • Fuel-flow generator

    • Fuel-flow indicator

    • Fuel-flow transmitter

    • Fuel remaining counter

    Correct Answer
    A. Fuel-flow transmitter
    Explanation
    The fuel-flow transmitter is the correct answer because it is the component in a jet engine's fuel system that operates using the water wheel concept. This means that it measures the flow rate of fuel in the engine by using a rotating wheel that is turned by the flow of fuel. The transmitter then sends this information to the fuel-flow indicator, which displays the flow rate to the pilot. The fuel-flow generator and fuel remaining counter are not directly related to the water wheel concept.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

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

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 01, 2010
    Quiz Created by
    Samh5112
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