Volume 4 - 2014 2a651s CDC
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 next step in troubleshooting should be to observe gauge indications. This is because gauge indications provide valuable information about the functioning of different systems in the aircraft/engine. By closely monitoring the gauge readings, any abnormal or out-of-range indications can be identified, which can help in pinpointing the potential issues or malfunctions. This initial observation of gauge indications can provide a starting point for further investigation and troubleshooting of the problem.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. In troubleshooting, it is important to systematically identify and address potential problem areas. Inspecting other areas after isolating trouble between points can lead to wasted time and effort, as the root cause of the issue may have already been identified. It is more effective to focus on the specific trouble areas and perform easy checks first before moving on to more difficult checks. This approach allows for a more efficient and targeted troubleshooting process.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. These charts provide a step-by-step guide for diagnosing and fixing issues that may arise in the power plant and engine systems of an aircraft. They help technicians identify the possible causes of a problem and guide them through the necessary steps to resolve it. This format allows for efficient and effective troubleshooting, ensuring that maintenance procedures are carried out accurately and quickly.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 essential to have a deep understanding of the function of each unit within each system. This knowledge allows the troubleshooter to identify and diagnose issues accurately, as they are familiar with how each component operates and interacts with other units. This expertise enables them to efficiently troubleshoot and resolve problems, making them an expert in their field.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. The EDU is responsible for monitoring and recording various engine parameters and performance data, including detecting and storing fault codes.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 DCU (Digital Control Unit) is the component that transfers information from the EDU (Engine Data Unit) to the GSU (Ground Support Unit). The DCU acts as a bridge between the two systems, allowing for the transfer of important engine monitoring data.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
To be considered effective tools for aviators, aircraft instruments must be small in size. This is because in the limited space of an aircraft cockpit, it is important for instruments to be compact and not take up too much space. Additionally, smaller instruments are easier to arrange and install in the cockpit, allowing for better visibility and accessibility for the pilot.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 determine the meaning of the instrument readings. By understanding how the instruments work and what they measure, you can interpret the readings correctly and make informed decisions about the engine's performance. This knowledge is crucial in determining if there are any issues with the engine that require further action, such as removal from the aircraft or testing in a test cell.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. This is because the transmitter is responsible for converting the physical quantity being measured (such as temperature or pressure) into an electrical signal, which is then transmitted to the indicator. The indicator, on the other hand, receives the electrical signal from the transmitter and displays the corresponding measurement value. Therefore, both the transmitter and indicator are necessary components for engine-monitoring gauges and instruments to function properly.Rate this question:
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- 10.
(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
Jet engine temperature is measured at various points to monitor the performance and ensure safe operation. The combustion inlet is not one of these points where temperature is measured. Temperature is typically measured at the fan turbine inlet, turbine inlet, and exhaust gas. These measurements are crucial for monitoring the engine's efficiency, detecting any abnormalities, and making necessary adjustments to optimize performance. However, the combustion inlet temperature is not directly measured as it is not considered a critical parameter for engine operation and performance evaluation.Rate this question:
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- 11.
(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 resistor.Explanation
A typical jet engine EGT indicating system contains thermocouples, leads, an indicator, and a resistor. The resistor is an essential component in the system as it helps to calibrate and regulate the electrical signal from the thermocouples. It is used to convert the temperature readings into a measurable electrical signal 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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- 12.
(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
The EGT (Exhaust Gas Temperature) indicating system thermocouples use alumel and chromel metals. Alumel is an alloy of nickel, aluminum, manganese, and silicon, while chromel is an alloy of nickel and chromium. These metals are chosen for their high temperature resistance and ability to accurately measure exhaust gas temperatures. Steel and iron are not used in EGT indicating system thermocouples.Rate this question:
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- 13.
(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 fuel-flow transmitter measures the rate at which fuel is being consumed by the engine and sends this information to the fuel-flow indicator, which displays the fuel flow rate to the pilot. This system is crucial for monitoring fuel consumption and ensuring that the engine is operating efficiently.Rate this question:
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- 14.
(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 a device that measures the rate at which fuel is flowing through the system. It provides information about how many pounds of fuel are being consumed per hour. This is an important metric for pilots to monitor as it helps them manage fuel consumption and determine the remaining fuel on board.Rate this question:
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- 15.
(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 correct answer is transmitter. The oil pressure indicator receives an electrical signal from the transmitter. This suggests that the oil pressure indicator is not directly connected to the gyro, hydraulic unit, or synchronous unit. Instead, it relies on the transmitter to provide the necessary information about oil pressure.Rate this question:
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- 16.
(603) The tachometer indicating system’s two primary units are the tachometer generator and tachometer
- 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 tachometer indicator. The tachometer generator is responsible for generating the electrical signal based on the rotational speed of the engine, while the tachometer indicator is the device that displays this information to the user. The other options, such as fuse panel, transformer, and thermocouple, are not directly related to the tachometer indicating system and therefore, are not the correct answer.Rate this question:
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- 17.
(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. The engine accessory section is responsible for driving various accessories, such as the generator, hydraulic pump, and tachometer generator. Therefore, it makes sense that the N2 tachometer generator would also be driven from this section.Rate this question:
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- 18.
(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 generating a frequency that is proportional to the engine speed. Therefore, the correct answer is that the tachometer generator's frequency is proportional to the engine speed.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 context of engines with afterburners, the exhaust nozzle's position needs to be converted into an electrical signal. A transducer is capable of performing this conversion, taking the physical position of the nozzle and converting it into an electrical signal that can be used for various purposes such as control systems or monitoring. Therefore, a transducer is the correct answer in this case.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 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 by monitoring the electrical resistance between the silver contacts. When the temperature rises above a certain threshold, the resistance between the contacts changes, triggering an alarm or safety mechanism to prevent further overheating.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
To perform an operational check of the fire warning system, pressing only the TEST switch is sufficient. This switch is specifically designed to initiate a test sequence that simulates a fire condition and checks the functionality of the system. Pressing both the TEST and NORMAL switches or only the TEST WARNING ON switch would not be necessary or relevant for this specific check. Similarly, pressing both the TEST ON and TEST OFF switches would not serve the purpose of testing 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 (Engine Pressure Ratio) indicates the amount of thrust a dual-compressor engine is producing. EPR is the ratio of the total pressure at the exhaust of the high-pressure compressor to the total pressure at the inlet of the engine. It is a measure of the engine's overall performance and is directly related to the amount of thrust being generated. RPM (Revolutions Per Minute) refers to the rotational speed of the engine, EGT (Exhaust Gas Temperature) measures the temperature of the engine's exhaust gases, and TIT (Turbine Inlet Temperature) measures the temperature at the inlet of the turbine section of the engine.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 at station 2. This means that it represents the combined pressure exerted by all the gases present at station 2, including the static pressure, dynamic pressure, and any other components. It does not refer to the pressure at flange 2 or the temperature and pressure at either flange 2 or station 2.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
Inlet Pt2 is transmitted from its sensing point through tubing. This means that the pressure measurement is conducted by using a system of tubes that connect the sensing point of the inlet Pt2 to the measuring device or instrument. The pressure is transmitted through these tubes, allowing for accurate measurement and monitoring of the inlet Pt2.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
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 aircraft transformer. Instead, it uses an aircraft transmitter. An aircraft transmitter is a device that converts the oil pressure into an electrical signal, which is then transmitted to the gauge to display the oil pressure reading. This eliminates the need for additional wiring, indicators, or transformers, making the measurement process simpler and more efficient.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 separately for each thermocouple or an average value can be obtained from all the thermocouples. This flexibility allows for more precise monitoring and adjustment of the EGT parameter 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 automatically controls the fuel module's solenoid valves to divert fuel flow through the flow turbines. This indicates that the flow turbines are an integral part of the fuel control system and play a role in regulating the fuel flow. The other options, such as flow cascades and fuel-oil coolers, do not align with the context of the question and are not mentioned as components controlled by the fuel-flow rate indicator.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 measure temperatures as low as -50 °F and as high as +1,600 °F.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 a result of external factors or forces acting upon the engine, such as imbalances in rotating parts or misalignment of engine components. This type of vibration can lead to excessive wear and tear on the engine, decreased performance, and potential damage if not addressed promptly.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 systems. These vibrations can lead to unnecessary engine removals and unwarranted repairs as they can cause stress and damage to the engine components. It is important to address and mitigate these externally excited vibrations to prevent unnecessary maintenance and ensure the proper functioning of the engine.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 for a short period of time and then disappear. These vibrations are not persistent and can come and go intermittently. This is in contrast to other types of engine vibrations such as forced vibrations (which are caused by a continuous external force), resonance vibrations (which occur at a specific frequency), and externally excited vibrations (which are caused by external factors). 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 measurement of how many cycles per second an object vibrates. It is commonly measured in cycles per second, also known as hertz (Hz). This measurement helps in understanding the speed or rate at which the vibrations occur. Mils, on the other hand, is a unit used to measure displacement or distance, while phase lags and phases per second are not directly related to frequency measurement 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 electric charge when subjected to mechanical stress or vibration. This type of transducer is commonly used to measure acceleration or vibration in various applications such as structural health monitoring, automotive testing, and aerospace engineering.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 manual.Explanation
The correct answer is the Intermediate maintenance manual. The intermediate maintenance manual provides detailed instructions and procedures for installing vibration pickups at the test cell. This manual is specifically designed to guide technicians at the intermediate maintenance level and contains step-by-step instructions to ensure proper installation of the vibration pickups. It is a comprehensive resource that covers all the necessary information and guidelines required for maintenance tasks at this level.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, the preset signal being exceeded is notified by a flashing channel indicator LED. This means that when the vibration levels go beyond the predetermined threshold, the LED on the corresponding channel will start flashing, indicating the exceeded signal. This visual indicator allows the user to easily identify which channel has exceeded the preset signal without the need for sound alarms or additional lights.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 support the fan and low-pressure turbine in a turbine engine. Bearings are mechanical devices that allow for smooth rotation by reducing friction between moving parts. In this context, bearings provide support and allow the fan and low-pressure turbine to rotate efficiently and smoothly, ensuring the proper functioning of the engine.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
The procedure that ensures that the fan and low-pressure turbine are correctly balanced is called fan rotor trim balance. This process involves adjusting the fan rotor blades to ensure that they are evenly distributed and aligned, which helps to minimize vibrations and improve the overall performance and efficiency of the engine. By achieving a proper balance between the fan and low-pressure turbine, the engine can operate smoothly and effectively.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
AFOSH STD 91-100 is the correct answer because it is a standard that provides guidelines and instructions for safe flight-line vehicle operations. AFI 36-2903 is the Air Force Instruction for Dress and Personal Appearance of Air Force Personnel, which is unrelated to flight-line vehicle operations. The flight-line JG and intermediate maintenance TO do not provide written instructions 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). Hydraulic and mechanical methods are not mentioned in the given information, so they are not the correct options. However, the use of manual and electronic methods for trimming an engine is mentioned, making it the correct answer.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 pressure gauges for oil system pressure checks are connected at the output side of the main oil pump and the vent system. This is because the main oil pump is responsible for supplying pressurized oil to the system, so measuring the pressure at the output side of the pump gives an accurate indication of the system's oil pressure. Additionally, connecting the gauges to the vent system allows for monitoring any pressure changes or abnormalities in the system's oil circulation and ventilation.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. IGT refers to the temperature between two stages of the turbine, and it is typically not measured during routine inspections. Instead, the focus is on other parameters such as FTIT (Fan Turbine Inlet Temperature), TIT (Turbine Inlet Temperature), and EGT (Exhaust Gas Temperature), which provide important information about 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
The anti-ice valve operational check is performed before starting the engine on an F-16C/D. During this check, the anti-ice engine switch should be placed in the OFF position. This ensures that the anti-ice system is not active during the engine start-up process. Placing the switch in the ON, START, or MANUAL position would activate the anti-ice system, which is not necessary or recommended during engine start-up.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. 2.Explanation
Aircraft noise suppressors have two primary air silencers to help reduce turbine whine. These silencers are designed to absorb and reduce the noise generated by the turbine, resulting in a quieter aircraft. By having two primary air silencers, the aircraft can effectively suppress the noise produced by the turbine, providing a more comfortable experience for passengers and reducing 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
C. Ensures the noise suppressor will be operational for the next aircraft.Explanation
The aircraft noise suppressor shutdown procedure is important because it ensures that the noise suppressor will be operational for the next aircraft. This means that following the shutdown procedure correctly will prevent any damage or malfunctioning of the noise suppressor, allowing it to function properly for the next aircraft. By ensuring its operational status, the shutdown procedure helps maintain the efficiency and effectiveness of the noise suppressor system.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 sidewalls of the hush house test bay are constructed of air inlet modules. These modules are designed to allow air to enter the test bay in a controlled manner. They are typically equipped with filters to ensure that the air entering the bay is clean and free from contaminants. By using air inlet modules, the test bay can maintain proper airflow and ventilation during testing operations. This helps to create a controlled testing environment and ensures accurate results.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 using small panel modules filled with noise reduction material. This design allows for flexibility and ease of installation. The small panel modules are effective in reducing noise and can be easily replaced if damaged or worn out. The noise reduction material inside the panels helps to absorb and dissipate the noise generated by the exhaust, making the hush house more effective in reducing overall noise levels.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
B. 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 needs to be checked, but also any necessary paperwork or documentation related to the aircraft must be reviewed. This ensures that all necessary forms are completed and the aircraft is in proper working order before it is moved 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 on tracks.
- D.
Engines can be run while on the ALC 3000 trailer.
Correct Answer
C. The thrust stand slides into position on tracks.Explanation
The thrust stand sliding into position on tracks allows flexibility when running an engine that has been removed from the airframe. This feature enables the engine to be securely positioned and tested in different positions, angles, and orientations, ensuring accurate and reliable performance evaluations. It also allows for adjustments and fine-tuning during testing, ensuring optimal engine functioning.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 being tested. This includes examining the concrete deterioration, ensuring the functionality of the fire suppression system, and inspecting the engine tie-down assemblies. However, the engine being tested itself does not need to be checked as it is the main object of the inspection.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
Engines that have been involved in an incident or a mishap are tested in addition to determining the condition of a repaired or overhauled engine. This suggests that the testing is done to assess the damage or any potential issues that may have occurred as a result of the incident or mishap.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Oct 13, 2014Quiz Created by
AustinCope
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