5 Level Volume 4
CDC 2A6X1 edit code 1
Questions and Answers
- 1.
(601) Where should you begin troubleshooting after reviewing the aircraft/engine forms?
- A.
Discuss problem with other journeymen in the shop.
- B.
Check each part of every system.
- C.
Examine most complex unit.
- D.
Observe gauge indications.
Correct Answer
D. Observe gauge indications.Explanation
After reviewing the aircraft/engine forms, the best place to begin troubleshooting is by observing gauge indications. This is because gauge indications can provide valuable information about the performance of various systems and components. By carefully monitoring the gauge readings, any abnormal or out-of-spec indications can be identified, which can then help in narrowing down the potential issues and determining the appropriate troubleshooting steps. Checking each part of every system or examining the most complex unit may be time-consuming and inefficient, while discussing the problem with other journeymen in the shop may not provide immediate and accurate information. Therefore, observing gauge indications is the most logical and effective starting point for troubleshooting.Rate this question:
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- 2.
(601) Which of the following is not a proper troubleshooting practice?
- A.
Checking the applicable trouble areas.
- B.
Understanding the function of each engine unit.
- C.
Inspecting other areas after isolating trouble between points.
- D.
Performing easy checks, then going to more difficult checks.
Correct Answer
C. Inspecting other areas after isolating trouble between points.Explanation
Inspecting other areas after isolating trouble between points is not a proper troubleshooting practice because it can lead to wasted time and effort. Once trouble has been isolated between specific points, it is more efficient to focus on those points and perform targeted inspections and checks to identify the root cause of the problem. Inspecting other areas that are not directly related to the isolated trouble points can be a distraction and may not provide any relevant information to resolve the issue. It is important to follow a systematic troubleshooting process to save time and resources.Rate this question:
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- 3.
(601) The troubleshooting information contained in aircraft power plant and engine intermediate maintenance TO is presented in the form of
- A.
Fix-it diagrams
- B.
Power plant charts.
- C.
Mechanical drawings.
- D.
Troubleshooting charts.
Correct Answer
D. Troubleshooting charts.Explanation
The correct answer is troubleshooting charts. The troubleshooting information in aircraft power plant and engine intermediate maintenance TO is presented in the form of charts that help identify and resolve issues with the power plant and engine systems. These charts provide step-by-step instructions and diagrams to guide maintenance personnel in diagnosing and fixing problems.Rate this question:
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- 4.
(601) To become an expert troubleshooter, you must
- A.
Be a 7-level.
- B.
Have at least five years experience.
- C.
Complete college courses in troubleshooting techniques.
- D.
Understand the function of each unit within each system.
Correct Answer
D. Understand the function of each unit within each system.Explanation
To become an expert troubleshooter, it is important to understand the function of each unit within each system. This knowledge allows the troubleshooter to identify and diagnose problems accurately. It enables them to determine which specific component or unit is causing the issue and take appropriate steps to fix it. Understanding the function of each unit within each system also helps troubleshooters to anticipate potential problems and develop effective troubleshooting strategies. This level of expertise comes from studying and gaining in-depth knowledge about the various units and systems involved in the troubleshooting process.Rate this question:
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- 5.
(602) What F100-PW–220 engine monitoring system component acquires fault data from the DEEC and logs the faults with the time of their occurrence?
- A.
DCU.
- B.
GSU.
- C.
EAU.
- D.
EDU.
Correct Answer
D. EDU.Explanation
The EDU (Engine Data Unit) is the component of the F100-PW-220 engine monitoring system that acquires fault data from the DEEC (Digital Electronic Engine Control) and logs the faults with the time of their occurrence.Rate this question:
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- 6.
(602) Which F100-PW–220 engine monitoring system component transfers information from the EDU to the GSU?
- A.
DCU.
- B.
EAU
- C.
Mn test system.
- D.
SCS
Correct Answer
A. DCU.Explanation
The F100-PW-220 engine monitoring system component that transfers information from the EDU to the GSU is the DCU.Rate this question:
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- 7.
(603) To be considered effective tools for aviators, aircraft instruments must be light weight, easy to read, and
- A.
Be small in size.
- B.
Use digital readout.
- C.
Use analog readout.
- D.
Cheap to manufacture.
Correct Answer
A. Be small in size.Explanation
Aircraft instruments need to be small in size in order to be considered effective tools for aviators. This is because there is limited space inside an aircraft cockpit, and having large instruments would take up too much space and make it difficult for pilots to operate the aircraft. Additionally, small instruments are also lighter in weight, which is another important factor for aircraft instruments to ensure that the overall weight of the aircraft is kept to a minimum.Rate this question:
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- 8.
(603) Understanding the operating principles of engine instruments help you decide
- A.
If an engine should be removed from an aircraft.
- B.
If the engine should be sent to the test cell.
- C.
The meaning of the instrument readings.
- D.
What tools are required for maintenance.
Correct Answer
C. The meaning of the instrument readings.Explanation
Understanding the operating principles of engine instruments helps you interpret the readings they provide. By knowing the meaning of the instrument readings, you can determine the current state of the engine and whether any maintenance or further action is required. This knowledge allows you to make informed decisions regarding the engine, such as whether it needs to be removed from the aircraft or sent to the test cell for further evaluation.Rate this question:
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- 9.
(603) Most engine-monitoring gauges and instruments require some type of
- A.
Electrical valve to the indicator.
- B.
Metal tubing for electron flow.
- C.
Radio frequency transmitter.
- D.
Transmitter and indicator.
Correct Answer
D. Transmitter and indicator.Explanation
Most engine-monitoring gauges and instruments require a transmitter and indicator because the transmitter is responsible for converting the physical measurements into electrical signals, which are then transmitted to the indicator. The indicator, on the other hand, receives these electrical signals and displays them in a readable format for the operator. Therefore, both the transmitter and indicator are necessary components for the proper functioning of engine-monitoring gauges and instruments.Rate this question:
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- 10.
(603) The fuel-flow indicator indicates the rate of fuel flow as
- A.
Pounds per hour.
- B.
Gallons per hour.
- C.
Pounds per minute.
- D.
Gallons per minute.
Correct Answer
A. Pounds per hour.Explanation
The fuel-flow indicator is used to measure the rate at which fuel is flowing in an aircraft. It provides information on the amount of fuel consumed over a specific period of time. The most commonly used unit for measuring fuel flow is pounds per hour (lb/hr). This unit is preferred because it allows for accurate calculations of fuel consumption and helps in determining the aircraft's range and endurance.Rate this question:
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- 11.
(603) The oil pressure indicator receives an electrical signal from the
- A.
Gyro.
- B.
Transmitter.
- C.
Hydraulic unit.
- D.
Synchronous unit.
Correct Answer
B. Transmitter.Explanation
The oil pressure indicator receives an electrical signal from the transmitter. A transmitter is a device that converts a physical quantity (in this case, oil pressure) into an electrical signal. In the context of an oil pressure indicator, the transmitter is responsible for measuring the oil pressure and sending the corresponding electrical signal to the indicator. This allows the indicator to display the accurate oil pressure reading to the operator.Rate this question:
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- 12.
(603) The tachometer indicating system’s two primary units are the tachometer generator and
- A.
Indicator.
- B.
Fuse panel.
- C.
Transformer.
- D.
Thermocouple.
Correct Answer
A. Indicator.Explanation
The tachometer indicating system consists of two primary units: the tachometer generator and the indicator. The tachometer generator is responsible for measuring the speed of rotation and converting it into an electrical signal. This signal is then sent to the indicator, which displays the speed of rotation on a dial or digital display. Therefore, the correct answer is the indicator.Rate this question:
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- 13.
(603) The N2 tachometer generator is usually driven from the tachometer drive located on the
- A.
Fuel control.
- B.
Combustion case.
- C.
Engine turbine section.
- D.
Engine accessory section.
Correct Answer
D. Engine accessory section.Explanation
The N2 tachometer generator is typically driven from the tachometer drive located on the engine accessory section. This section of the engine includes various components such as the starter, generator, and accessories like the tachometer drive. The tachometer drive is responsible for transmitting the rotational speed of the engine to the N2 tachometer generator, which then measures and displays the N2 turbine speed. Therefore, the correct answer is engine accessory section.Rate this question:
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- 14.
(603) The tachometer generator’s frequency is proportional to the
- A.
Engine speed.
- B.
Transformer speed.
- C.
Speed of the electrical magnet.
- D.
Speed of the alternating magnet.
Correct Answer
A. Engine speed.Explanation
The tachometer generator is a device that measures the speed of an engine. It works by converting the rotational speed of the engine into an electrical signal. The frequency of this signal is directly proportional to the engine speed. Therefore, the correct answer is engine speed.Rate this question:
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- 15.
(603) Which jet engine temperature is not measured?
- A.
Combustion inlet.
- B.
Fan turbine inlet.
- C.
Turbine inlet.
- D.
Exhaust gas.
Correct Answer
A. Combustion inlet.Explanation
The question asks which jet engine temperature is not measured. The correct answer is "Combustion inlet." This means that the temperature of the air entering the combustion chamber of a jet engine is not typically measured. Temperature measurements are commonly taken at the fan turbine inlet, turbine inlet, and exhaust gas, but not at the combustion inlet.Rate this question:
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- 16.
(603) A typical jet engine EGT indicating system contains thermocouples, leads, an indicator, and
- A.
A resistor
- B.
A turbine inlet.
- C.
A control valve.
- D.
An exhaust duct.
Correct Answer
A. A resistorExplanation
A typical jet engine EGT indicating system contains thermocouples, leads, an indicator, and a resistor. The resistor is an essential component of the system as it helps to regulate the electrical current and temperature readings. It plays a crucial role in converting the temperature measurements from the thermocouples into electrical signals that can be displayed on the indicator. Without the resistor, the system would not be able to accurately measure and display the engine's exhaust gas temperature.Rate this question:
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- 17.
(603) Which metals are used in the EGT indicating system thermocouples?
- A.
Steel and iron.
- B.
Steel and alumel
- C.
Iron and chromel
- D.
Alumel and chromel.
Correct Answer
D. Alumel and chromel.Explanation
Alumel and chromel are the metals used in the EGT (Exhaust Gas Temperature) indicating system thermocouples. These metals are chosen for their high temperature resistance and stability. Alumel is an alloy of nickel, aluminum, manganese, and silicon, while chromel is an alloy of nickel and chromium. These alloys are able to withstand the high temperatures generated in the exhaust system and provide accurate temperature readings for monitoring and control purposes.Rate this question:
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- 18.
(603) Most jet-powered aircraft engine fuel-flow indicating systems contain a fuel-flow
- A.
Transmitter and a float valve.
- B.
Control valve and a float valve.
- C.
Transmitter and a fuel-flow indicator.
- D.
Control valve and a fuel-flow transcriber.
Correct Answer
C. Transmitter and a fuel-flow indicator.Explanation
Jet-powered aircraft engine fuel-flow indicating systems typically consist of a fuel-flow transmitter and a fuel-flow indicator. The transmitter measures the rate of fuel flow and sends this information to the indicator, which displays it to the pilot. This allows the pilot to monitor the fuel consumption and ensure that the engine is receiving the appropriate amount of fuel. The other options, control valve and a float valve, and control valve and a fuel-flow transcriber, are not commonly found in fuel-flow indicating systems.Rate this question:
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- 19.
(603) What converts the exhaust nozzle’s position on engines with afterburners into an electrical signal?
- A.
Rheostat.
- B.
Rectifier.
- C.
Transducer.
- D.
Transformer.
Correct Answer
C. Transducer.Explanation
A transducer is a device that converts one form of energy into another. In the case of engines with afterburners, the exhaust nozzle's position needs to be converted into an electrical signal. This is where a transducer comes in. It is responsible for converting the physical position of the exhaust nozzle into an electrical signal that can be used for various purposes, such as monitoring and control. A rheostat, rectifier, and transformer are not specifically designed for this task, making transducer the correct answer.Rate this question:
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- 20.
(603) One type of overheat detector unit used on aircraft engines consists of a hollow stainless-steel tube that covers
- A.
One gold contact
- B.
Two silver contacts.
- C.
Three bronze contacts.
- D.
Four copper contacts.
Correct Answer
B. Two silver contacts.Explanation
The correct answer is two silver contacts. The overheat detector unit used on aircraft engines consists of a hollow stainless-steel tube that covers two silver contacts. This design allows for the detection of excessive heat in the engine by measuring the resistance between the contacts. When the temperature rises, the contacts expand and the resistance decreases, triggering an alarm or warning system. Silver is a good conductor of heat and electricity, making it suitable for this purpose.Rate this question:
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- 21.
(603) For an operational check of the fire warning system, you press
- A.
Only the TEST switch.
- B.
Both TEST and NORMAL switches
- C.
Only the TEST WARNING ON switch.
- D.
Both TEST ON and TEST OFF switches.
Correct Answer
A. Only the TEST switch.Explanation
The correct answer is only the TEST switch. This is because when performing an operational check of the fire warning system, pressing only the TEST switch is sufficient. Pressing both the TEST and NORMAL switches or only the TEST WARNING ON switch would not be necessary for this specific check. Pressing both the TEST ON and TEST OFF switches would also not be required as they are not relevant to the operational check of the fire warning system.Rate this question:
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- 22.
(603) What indicates the amount of thrust a dual-compressor engine is producing?
- A.
EPR.
- B.
RPM.
- C.
EGT.
- D.
TIT.
Correct Answer
A. EPR.Explanation
EPR stands for Engine Pressure Ratio and it is a measure of the amount of thrust a dual-compressor engine is producing. It is calculated by dividing the total pressure at the engine inlet by the total pressure at the engine exhaust. EPR is commonly used in aviation to monitor and control engine performance, as it provides a direct indication of the engine's thrust output. RPM (Rotations Per Minute) is a measure of the engine's rotational speed, EGT (Exhaust Gas Temperature) indicates the temperature of the engine's exhaust gases, and TIT (Turbine Inlet Temperature) measures the temperature of the air entering the turbine.Rate this question:
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- 23.
(603) The term Pt2 means the
- A.
Total (t) pressure (P) at flange 2 (2).
- B.
Total (t) pressure (P) at station 2 (2).
- C.
Temperature (t) and pressure (P) at flange 2 (2).
- D.
Temperature (t) and pressure (P) at station 2 (2).
Correct Answer
B. Total (t) pressure (P) at station 2 (2).Explanation
The term Pt2 refers to the total pressure (P) at station 2 (2). This means that it represents the combined pressure exerted by all the gases and fluids present at station 2. It does not include temperature information or specify a particular flange.Rate this question:
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- 24.
(603) How is inlet Pt2 transmitted from its sensing point?
- A.
Electrically.
- B.
Mechanically.
- C.
Hydraulically.
- D.
Through tubing.
Correct Answer
D. Through tubing.Explanation
The correct answer is "Through tubing." This means that inlet Pt2 is transmitted from its sensing point using tubing. This suggests that there is a physical connection, likely a tube or pipe, through which the pressure or measurement is transmitted to the desired location.Rate this question:
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- 25.
(604) When connected to an engine oil pressure line the direct oil pressure gauge on a test cell indicates oil pressure without using wiring, indicator, or
- A.
Aircraft transformer.
- B.
Engine transformer.
- C.
Aircraft transmitter.
- D.
Engine transmitter.
Correct Answer
C. Aircraft transmitter.Explanation
The direct oil pressure gauge on a test cell indicates oil pressure without using wiring, indicator, or engine transformer. Since the gauge is connected to an engine oil pressure line, it must be connected to an aircraft transmitter to receive and display the oil pressure readings.Rate this question:
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- 26.
(604) The test cell’s EGT selector allows selecting
- A.
The EGT parameter for transit speeds.
- B.
The accuracy check switch during adjustment.
- C.
Digital or analog readings for the EGT indicator.
- D.
Individual thermocouple inputs or an average of these inputs.
Correct Answer
D. Individual thermocouple inputs or an average of these inputs.Explanation
The test cell's EGT selector allows selecting individual thermocouple inputs or an average of these inputs. This means that the EGT parameter can be measured either from each individual thermocouple or from an average of all the thermocouples. This provides flexibility in monitoring and analyzing the EGT readings in the test cell.Rate this question:
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- 27.
(604) The test cell fuel-flow rate indicator automatically controls the fuel module’s solenoid valves in order to divert fuel flow through the
- A.
Fuel control.
- B.
Flow turbines.
- C.
Flow cascades.
- D.
Fuel-oil coolers.
Correct Answer
B. Flow turbines.Explanation
The test cell fuel-flow rate indicator is responsible for controlling the fuel module's solenoid valves. These valves are used to divert fuel flow through the flow turbines. Therefore, the correct answer is flow turbines.Rate this question:
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- 28.
(604) The display range of the test cell IC temperature indicator is
- A.
–100 to +1,000 °F.
- B.
–75 to +1,400 °F.
- C.
–50 to +1,600 °F.
- D.
–25 to +1,800 °F.
Correct Answer
C. –50 to +1,600 °F.Explanation
The correct answer is –50 to +1,600 °F. This means that the test cell IC temperature indicator can display temperatures ranging from -50 degrees Fahrenheit to +1,600 degrees Fahrenheit.Rate this question:
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- 29.
(605) What engine vibration usually causes the most concern?
- A.
Forced.
- B.
Transient.
- C.
Unbalanced.
- D.
Externally excited.
Correct Answer
A. Forced.Explanation
Forced engine vibration usually causes the most concern because it is typically caused by external factors such as loose components, worn bearings, or misalignment. This type of vibration is often more severe and can indicate a more serious issue with the engine, requiring immediate attention to prevent further damage or failure. Transient vibration refers to temporary or intermittent vibrations that are not as worrisome, unbalanced vibration is caused by an uneven distribution of mass within the engine, and externally excited vibration is caused by external forces such as wind or turbulence.Rate this question:
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- 30.
(605) What type of vibration causes unnecessary engine removals and unwarranted repairs?
- A.
Forced.
- B.
Transient.
- C.
Unbalanced.
- D.
Externally excited.
Correct Answer
D. Externally excited.Explanation
Externally excited vibrations refer to vibrations that are caused by external factors such as wind, road conditions, or other mechanical components. These vibrations can lead to unnecessary engine removals and unwarranted repairs because they put additional stress on the engine and its components, potentially causing damage or malfunctions. Therefore, the correct answer is externally excited.Rate this question:
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- 31.
(605) What engine vibration does not persist, but comes and goes?
- A.
Forced.
- B.
Transient.
- C.
Resonance.
- D.
Externally excited.
Correct Answer
B. Transient.Explanation
Transient engine vibration refers to vibrations that occur intermittently or temporarily and do not persist. These vibrations may come and go and are typically caused by temporary disturbances or changes in operating conditions. Unlike resonance or externally excited vibrations, which can persist and are caused by specific frequencies or external forces, transient vibrations are temporary in nature and do not have a consistent pattern or duration. Therefore, the correct answer is transient.Rate this question:
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- 32.
(605) In vibration analysis, frequency is usually measured in
- A.
Mils
- B.
Phase lags.
- C.
Cycles per second.
- D.
Phases per second.
Correct Answer
C. Cycles per second.Explanation
In vibration analysis, frequency is a measure of how many cycles or oscillations occur per unit of time. It is usually measured in cycles per second, which is also known as Hertz (Hz). This unit of measurement is commonly used to quantify the frequency of vibrations in machinery and structures. Mils, phase lags, and phases per second are not typically used to measure frequency in vibration analysis.Rate this question:
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- 33.
(606) Which type of vibration transducer is made of certain ceramic compounds and natural crystals?
- A.
Velocity.
- B.
Phase log.
- C.
Displacement accelerometer.
- D.
Piezoelectric accelerometer.
Correct Answer
D. Piezoelectric accelerometer.Explanation
A piezoelectric accelerometer is made of certain ceramic compounds and natural crystals. These materials have the property of generating an electrical charge when subjected to mechanical stress or vibration. This type of transducer is commonly used for measuring vibrations in various applications, such as structural health monitoring, machinery condition monitoring, and automotive testing. It converts the mechanical vibrations into an electrical signal, allowing for accurate measurement and analysis of the vibration levels.Rate this question:
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- 34.
(606) Where do you find the instructions for installing vibration pickups at the test cell?
- A.
Test cell technical order.
- B.
Intermediate maintenance manual
- C.
Organizational maintenance manual.
- D.
Methods and procedures maintenance manual.
Correct Answer
B. Intermediate maintenance manualExplanation
The intermediate maintenance manual is the correct source for finding the instructions for installing vibration pickups at the test cell. This manual provides detailed information and step-by-step procedures for intermediate-level maintenance tasks, including the installation of equipment like vibration pickups. It is a comprehensive resource that technicians can refer to for guidance on maintenance procedures and troubleshooting. The other options, such as the test cell technical order, organizational maintenance manual, and methods and procedures maintenance manual, may contain relevant information but the intermediate maintenance manual is specifically designed for this level of maintenance task.Rate this question:
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- 35.
(606) When using a vibration analyzer how are you notified when a preset signal has been exceeded?
- A.
A horn alarm
- B.
Flashing red lights.
- C.
A buzzer sounding.
- D.
A flashing channel indicator LED.
Correct Answer
D. A flashing channel indicator LED.Explanation
When using a vibration analyzer, a preset signal being exceeded is notified through a flashing channel indicator LED. This means that when the vibration levels surpass the predetermined threshold, the specific channel on the analyzer will display a flashing LED light, indicating that the signal has been exceeded. This visual notification allows the user to quickly identify and address any potential issues or anomalies in the vibration levels being analyzed.Rate this question:
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- 36.
(607) What supports the fan and low-pressure turbine?
- A.
Bushings.
- B.
Brackets.
- C.
Bearings.
- D.
Bulkheads.
Correct Answer
C. Bearings.Explanation
Bearings are the components that support the fan and low-pressure turbine. They are designed to reduce friction and allow smooth rotation of these components. Bearings are typically made of durable materials such as steel or ceramic and are lubricated to ensure proper functioning. They provide stability and support to the fan and low-pressure turbine, allowing them to operate efficiently and effectively.Rate this question:
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- 37.
607) What procedure ensures that the fan and low-pressure turbine are correctly balanced?
- A.
Engine trim.
- B.
Fan rotor trim balance.
- C.
Low-pressure turbine rotor trim balance.
- D.
High-pressure turbine rotor trim balance.
Correct Answer
B. Fan rotor trim balance.Explanation
Fan rotor trim balance is the procedure that ensures that the fan and low-pressure turbine are correctly balanced. This involves adjusting the weight distribution of the fan rotor blades to minimize any vibrations or uneven forces during operation. By achieving a proper balance, the fan and low-pressure turbine can operate smoothly and efficiently, reducing the risk of damage and improving overall performance.Rate this question:
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- 38.
(608) You can find written instructions for safe flight-line vehicle operations in
- A.
The flight-line JG
- B.
AFI 36-2903.
- C.
The intermediate maintenance TO.
- D.
AFOSH STD 91-100.
Correct Answer
D. AFOSH STD 91-100.Explanation
The correct answer is AFOSH STD 91-100. AFOSH STD 91-100 provides written instructions for safe flight-line vehicle operations. AFI 36-2903 pertains to dress and appearance standards, while the intermediate maintenance TO would provide instructions for maintenance procedures. Therefore, AFOSH STD 91-100 is the most appropriate source for safe flight-line vehicle operations.Rate this question:
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- 39.
(608) Trim means to adjust the engine systems for optimum performance according to the TO’s limits. The two methods used to trim an engine are
- A.
Hydraulic and mechanical.
- B.
Hydraulic and electronic.
- C.
Manual and mechanical.
- D.
Manual and electronic.
Correct Answer
D. Manual and electronic.Explanation
The correct answer is manual and electronic. Trim refers to adjusting the engine systems for optimum performance within the limits specified in the TO (Technical Order). Two methods used for trimming an engine are manual, which involves physically adjusting certain components, and electronic, which involves using computer systems to optimize performance.Rate this question:
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- 40.
(609) The pressure gauges used for an oil system pressure checks are connected at the
- A.
Inlet side of the oil pump and the vent system.
- B.
Output side of the main oil pump and the vent system.
- C.
Scavenge pump and the inlet side of oil pressure pump.
- D.
Bearing jets and the output side of the oil scavenge pump.
Correct Answer
B. Output side of the main oil pump and the vent system.Explanation
The correct answer is the output side of the main oil pump and the vent system. This is because the pressure gauges are used to check the pressure in the oil system, and the output side of the main oil pump is where the oil is being pumped out into the system. The vent system is also connected to the output side of the main oil pump to release any excess pressure in the system. Therefore, connecting the pressure gauges at these points would provide an accurate measurement of the oil system pressure.Rate this question:
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- 41.
(609) When checking the turbine section, you do not measure
- A.
FTIT.
- B.
TIT.
- C.
EGT
- D.
IGT.
Correct Answer
D. IGT.Explanation
When checking the turbine section, the measurement of IGT (Interstage Turbine Temperature) is not necessary. This is because IGT refers to the temperature between two stages of the turbine, and it is not typically measured during routine inspections. Instead, other temperature measurements such as FTIT (Fan Turbine Inlet Temperature), TIT (Turbine Inlet Temperature), and EGT (Exhaust Gas Temperature) are more commonly used to assess the performance and condition of the turbine section.Rate this question:
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- 42.
(609) When doing an anti-ice valve operational check on an F-16C/D before starting the engine you place the anti-ice engine switch to
- A.
ON.
- B.
OFF.
- C.
START.
- D.
MANUAL.
Correct Answer
B. OFF.Explanation
When doing an anti-ice valve operational check on an F-16C/D before starting the engine, the correct position for the anti-ice engine switch is OFF. This is because during the operational check, the anti-ice valve should be closed to ensure that there is no leakage in the system. By placing the switch in the OFF position, it confirms that the valve is closed and there is no anti-ice system leakage.Rate this question:
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- 43.
(610) Aircraft noise suppressors have how many primary air silencers to help reduce turbine whine?
- A.
2
- B.
4
- C.
6
- D.
8
Correct Answer
A. 2Explanation
Aircraft noise suppressors have two primary air silencers to help reduce turbine whine. These silencers are designed to absorb and dampen the noise produced by the aircraft's turbines, reducing the overall noise level. By using two silencers, the aircraft can effectively suppress the noise and make the flying experience more comfortable for passengers and reduce noise pollution in surrounding areas.Rate this question:
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- 44.
(610) The aircraft noise suppressor shutdown procedure is important because it
- A.
Prevents aircraft inlet damage.
- B.
Prevents engine turbine wheel damage.
- C.
Ensures the noise suppressor will be operational for the next aircraft.
- D.
Ensures that the noise suppressor is not damaged by improper engine shutdown procedures.
Correct Answer
B. Prevents engine turbine wheel damage.Explanation
The correct answer is "prevents engine turbine wheel damage." The aircraft noise suppressor shutdown procedure is important because it ensures that the noise suppressor is not damaged by improper engine shutdown procedures. This is particularly important for the engine turbine wheel, as improper shutdown can cause damage to this component. By following the correct shutdown procedure, the engine turbine wheel is protected from potential harm, thus preventing damage and ensuring the proper functioning of the aircraft.Rate this question:
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- 45.
(611) The sidewalls of the hush house test bay is constructed of
- A.
Air inlet modules.
- B.
Observation ports.
- C.
Air exhaust modules
- D.
High-grade steel panels.
Correct Answer
A. Air inlet modules.Explanation
The correct answer is air inlet modules. The sidewalls of the hush house test bay are constructed of air inlet modules, which allow for the controlled intake of air into the test bay. These modules are designed to regulate the airflow and provide the necessary ventilation for the test bay. The use of air inlet modules ensures that the air entering the test bay is properly filtered and controlled, maintaining the desired testing environment.Rate this question:
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- 46.
(611) The hush house exhaust deflector is constructed of
- A.
Flexible soft metal filled with noise reduction material.
- B.
Cylinder-type tubing filled with noise reduction material.
- C.
Small panel modules filled with noise reduction material.
- D.
Panels and air cooling ports filled with noise reduction material.
Correct Answer
C. Small panel modules filled with noise reduction material.Explanation
The hush house exhaust deflector is constructed of small panel modules filled with noise reduction material. This construction allows for flexibility and easy installation, as the small panel modules can be easily assembled and arranged to fit the specific requirements of the hush house. The noise reduction material helps to absorb and dampen the noise generated by the exhaust, ensuring that the hush house operates quietly and efficiently.Rate this question:
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- 47.
(611) Before moving an aircraft into the hush house, you must inspect the aircraft
- A.
Red streamers.
- B.
And its forms.
- C.
Flight station.
- D.
Forms.
Correct Answer
A. Red streamers.Explanation
Before moving an aircraft into the hush house, it is necessary to inspect the aircraft for any red streamers. This implies that red streamers are used as indicators for potential issues or hazards that need to be addressed before the aircraft can be moved. Inspecting the aircraft for red streamers ensures that any necessary maintenance or repairs are completed before the aircraft is brought into the hush house.Rate this question:
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- 48.
(611) What hush house feature allows flexibility when running an engine that has been removed from the airframe?
- A.
Tailhook connects to the engine.
- B.
Wheel chocks restrain the engine.
- C.
The thrust stand slides into position
- D.
Engines can be run while on the ALC 3000 trailer.
Correct Answer
C. The thrust stand slides into positionExplanation
The thrust stand sliding into position allows flexibility when running an engine that has been removed from the airframe. This feature enables the engine to be securely positioned and stabilized, allowing it to be safely operated while not attached to the aircraft.Rate this question:
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- 49.
(611) When inspecting the hush house, you are not required to check the
- A.
Engine being tested.
- B.
Concrete deterioration.
- C.
Fire suppression system.
- D.
Engine tie-down assemblies.
Correct Answer
A. Engine being tested.Explanation
When inspecting the hush house, the focus is on checking various aspects related to the engine testing process. This includes inspecting the concrete deterioration, ensuring the functionality of the fire suppression system, and examining the engine tie-down assemblies. However, the engine being tested itself does not need to be checked as it is the primary object of the testing process rather than a component of the hush house infrastructure.Rate this question:
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- 50.
(612) In addition to determining the condition of a repaired or overhauled engine, you also test engines
- A.
For training practice.
- B.
In aircraft that have been modified.
- C.
That have been involved in an incident or a mishap.
- D.
That have severe FOD damage.
Correct Answer
C. That have been involved in an incident or a mishap.Explanation
The correct answer is "that have been involved in an incident or a mishap." This is because testing engines that have been involved in an incident or a mishap helps to determine the extent of damage and evaluate the engine's performance after such events. This is important for safety reasons and to ensure that the engine is functioning properly before it is used again.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
ProProfs Editorial Team -
Jul 24, 2015Quiz Created by
Andrew
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