Aircrewman Mechanical (AWF) Test 3 Practice

These questions are part of the practice quiz. Start practicing

• What is the purpose of fuel cross-feed in multi-tank systems?
• Which of the following is NOT a listed type of oil pump?
• What do ball bearings do?
• How does a rudder limiter protect the flight control system?
• What are the three main purposes of oil?
• Engine Pressure Ratio (EPR) is defined as which of the following?
• Sediment contamination is defined as sediment larger than how many microns?
• Freeze Point is defined as which of the following?
• Which statement correctly distinguishes ball bearings from roller bearings?
• Chip detectors come in two types. Which statement correctly describes the first type?
• Engine Pressure Ratio (EPR) is most closely related to which concept in an internal combustion engine?
• Which property helps prevent oil breakdown at high temperatures?
• If a flight control surface interconnect fails, what is the likely outcome?
• What is the primary purpose of grounding in aircraft electrical systems?
• What are the three basic components of a typical engine ignition system?
• What is the function of main engine bearings?
• Which set of components are considered the power section in a turboprop engine?
• Turbojet engines can be found on which aircraft mentioned?
• Float Type Oil Quantity Tank Unit uses what to detect oil?
• Which statement describes roller bearings?
• What is the function of a spring-damper combination in control linkages?
• Which engine component is driven by the energy created in the combustion chamber?
• Volatility of a fuel is a measure of what property?
• Which description best matches labyrinth seals?
• Why is cabin pressurization necessary at altitude?
• To prevent metal-to-metal wear, oil must have:
• Relief valves (as a type of valve) are used to do what?
• In a split-spool compressor, which rotor configuration is described?
• What does the torque meter assembly indicate on a naval engine?
• How do electrical buses organize aircraft power distribution?
• Which statement best describes combustion products?
• Which statement best describes the function of the flight control surface interconnect?
• Where can aircraft fuel tanks be located?
• Explain the role of an oil cooler.
• What is the primary function of the packs in the environmental control system?
• What is the purpose of bypass valves?
• How do yaw damper and stability augmentation systems improve handling?
• FSII additives primarily prevent icing in which components?
• What is the purpose of control surface gaps and gap seals?
• Flashpoint is defined as the temperature at which:
• Which of the following is NOT a typical function of an electrical circuit breaker in an aircraft?
• Disk-type filters use a series of spacers and screens. What directs oil through the screens?
• Dry-sump lubrication systems have which feature?
• What is the primary purpose of a seal in an oil system?
• The component described as like spark plug cables is which?
• In a hydraulic circuit, which component is directly responsible for converting hydraulic energy into linear motion?
• What is vapor lock and how can it be prevented?
• What does the torquemeter indicate?
• Which of the following are sources of lubricants?
• Which are the three types of vanes used in gas turbine engines?
• The energy stored in a spring when it is stretched or compressed is known as what?
• What does an oil pressure warning light indicate?
• What is the purpose of a standby instrument power supply?
• What hazard does water in fuel pose to aircraft systems?
• Which seal type is described as acting like a maze to trap oil?
• What is the function of a flight control surface interconnect?
• Heat energy content is defined as what?
• What are combustion products?
• Which type of compressor is frequently used in turboshaft engines?
• Which JP fuel has NATO code F-34?
• Which statement describes thread seals?
• Which motion is converted in a rack-and-pinion mechanism?
• What is the function of an oil pump?
• What is the primary purpose of the exhaust cone in a turbofan or turbine engine?
• Which of the following is a major component of all gas turbine engines?
• How is cabin altitude safety maintained during rapid depressurization?
• Oil Pressure instruments indicate whether oil is circulating under proper pressure. Which describes the oil pressure measurement?
• What problems can fuel contamination cause and how is it mitigated?
• Check valves are located in which of the following locations?
• Which of the following is included in engine performance monitoring?
• What is the primary function of an oil tank in the lubrication system?
• What is the primary reason hydraulic systems can deliver high forces over long distances?
• Which statement best describes a necessary viscosity characteristic of lubricating oil?
• Which statement about the two chip detector types is true?
• In a gas turbine engine, which component directly follows the compressor in the flow path?
• What supply systems do aircraft fuel systems provide to?
• Which statement best defines the fire point of a fuel?
• What distinguishes turbofan engines from turboprops?
• Which statement accurately describes the effects of additives and impurities on fuel systems?
• What is the purpose of a turbine engine's fuel control unit?
• Which technique helps prevent vapor lock by routing fuel and controlling temperature?
• Why is flutter a consideration in airframe design and maintenance?
• What does "Clean and bright" indicate regarding aircraft fuel?
• Which statement best explains why a lever provides mechanical advantage?
• How do afterburners affect engine performance and fuel consumption?
• The Engine RPM system displays N1 and N2 rotor speeds in which unit?
• Which item is NOT listed as a type of fuel contamination?
• Which statement correctly distinguishes volatility from flash point?
• Where is the additional propeller assembly mounted on a turboprop?
• What is a compressor stall and its effect?
• Which statement about fuel storage tanks is true?
• Which component supplies voltage to igniter plugs?
• In the described turbine engine, what portion of the turbine's power is dedicated to producing thrust?
• What is mechanical efficiency?
• Turboshaft engines are commonly used on which platform?
• Which component transfers high voltage from the exciters to the igniter plugs?
• Which components are primary flight controls?
• Why is clean fuel considered life or death matter?
• Briefly describe a regulator function in a pneumatic system.
• Bleed air is used for which of the following functions in an environmental control system?
• How do anti-skid systems enhance braking performance?
• Micronic-type filters can use which materials?
• What role do avionics play in navigation and safety?
• Explain the difference between primary flight controls and secondary flight controls.
• Which of the following is NOT a function of a pneumatic regulator?
• What is the function of accessory bearings?
• What is the purpose of sump and drains in fuel storage?
• In aircraft fuel systems, which components are used to mitigate water and particulates?
• Exhaust Gas Temperature (EGT) is measured at which location in a turbine engine?
• What does Exhaust Gas Temperature (EGT) measure?
• What is a typical power source for pneumatic systems on aircraft?
• Micronic-type filters can use which materials?
• Identify two common failure indicators in hydraulic systems and their causes.
• In a dual-spool engine, N1 and N2 refer to rotor speeds of which components?
• Why moisture must be controlled in a pneumatic system?
• Which statement best describes a lubrication system's primary function?
• What is the relationship between work, force, and displacement in a simple machine?
• What is the role of venting and return paths in fuel tanks?
• Flash point is defined as the temperature at which fuel vaporizes enough to ignite.
• How many igniter plugs per engine are described?
• Which statement best describes the role of engine oil in aircraft engines?
• What is the primary function of the combustion chamber in a gas turbine?
• Which statement correctly describes a turbofan compared to a turboprop?
• Which statement is true about clean fuel condition?
• What is a typical effect of cavitation in a hydraulic pump?
• Low pour point ensures oil flows at low temperatures. Which choice reflects this property?
• What is a servo actuator and how does it work in flight control systems?
• What do avionics provide in navigation and safety?
• What describes carbon seals?
• Which components are secondary flight controls?
• What is the purpose of an accumulator in a hydraulic system?
• Which statement correctly describes common fuel pump types in aircraft and their purposes?
• Which statement reflects a safe flash point and fire point for oil?
• Why are cooling systems critical for engine performance?
• Fuel tanks can be located where?
• Why are fuses and circuit breakers essential in aircraft electrical systems?
• Which statement best describes JP-5?
• What is the primary function of engine oil in aircraft engines?
• Turbine Inlet Temperature (TIT) indicates combustion gases entering the turbine and is read before the turbine in increments of 100°C.
• Wet-sump lubrication systems are characterized by which of the following?
• Which is NOT a major component of turbojet engines?
• What are the two turbines in a typical turboshaft engine?
• In a Solid State Oil Quantity Tank Unit, what is used as the sensing element?
• The turboprop engine is described as providing about how many horsepower per pound of weight?
• Which feature helps prevent vapor lock by routing fuel and controlling temperature?
• Which statement describes the fuel's handling characteristics?
• Which items are included as main oil system components?
• Which JP fuel has NATO code F-44?
• In disk-type oil filters, what determines the size of foreign matter allowed through the screens?
• In a flight control system, to what does a servo actuator apply movement?
• Which component extends into the combustion chamber and provides the spark that ignites the chamber?
• Where is the Airborne Vibration Monitoring System located?
• Which statement best describes JP-8?
• What are the two basic types of oil quantity tank units?
• What is the purpose of a split-spool compressor in a gas turbine engine?
• Chip detectors are placed in which path?
• What condition most commonly causes the hydraulic fluid to feel spongy or unresponsive?
• What is a ram air cycle and its use?
• Main engine bearings support which rotors and permit rotation?
• Which of the following are types of seals?
• What is a key difference between pneumatic and hydraulic actuation in aircraft systems?
• Which vane is stationary and does not rotate?
• Fuel Flow is the rate of fuel consumption by the engine, measured in which unit?
• Firepoint is defined as the temperature at which:
• Where does the drive shaft exit in a turboshaft engine?
• What is the primary role of ducts in the environmental control system?
• In an axial-flow compressor, what is a stage?
• What is the function of the landing gear oleo strut?
• What are typical sources of pneumatic power on aircraft?
• Which of the following is a type of fuel contamination listed?
• If FADEC fails, what happens to the engine?
• In a turboshaft engine, which turbine powers the compressor?
• Which oil quantity tank unit uses nickel alloy wire as the sensing element?
• What is the primary function of filters in the lubrication system?
• Which specification governs the primary oil used by the navy?
• How can oil contamination affect engine performance?
• AVM monitors engine vibration data and is located where?
• Which feature is associated with fuel contamination control?
• Valves control the pressure and flow of oil in the lubrication system. Which of the following is NOT a valve type?
• Why are hydraulic systems preferred for aircraft flight control surfaces?
• Which of the following is a primary function of a regulator in a pneumatic system?
• What is the correct description of the three main purposes of oil?
• What is the difference between DC electrical power and AC electrical power in aircraft systems?
• What is a direct effect of fuel contamination on aircraft?
• Which system automatically dampens sideslip and reduces pilot workload?
• Relief valves are preset to relieve pressure.
• What is grounding and why is it critical?
• Which item is part of a typical engine ignition system?
• Which fuel is described as relatively safe, thermally stable kerosene-type fuel suitable for ship use?
• Which instrument measures the engine's mechanical power output (torque) as part of engine performance monitoring?
• JP-4 has which NATO code?
• Which of the following can trigger an oil pressure warning light?
• What is a common symptom of a leaky pneumatic system?
• Viscosity refers to what property?
• Which statement correctly describes turbofan engines compared with turbojets?
• Which type of oil temperature sensor is used that is supplied with electrical current by the aircraft DC power system?
• What portion of power is typically used to drive the compressor in a gas turbine engine?
• All parts of the engine temperature measurement system are made of which materials?
• Which of the following is NOT one of the four types of gas turbine engines?
• What is the purpose of the reduction gear assembly in a turboprop engine?
• What is the basic flow path in a typical aircraft hydraulic circuit starting at the reservoir?
• Which of the following is listed as a type of jet engine?
• How does air in hydraulic fluid affect system performance?
• Ball bearings are described as supporting which loads?
• What are the common components of an environmental control system?
• Which statement best describes the function of aircraft fuel systems?
• What does FADEC stand for?
• In jet propulsion, how is thrust produced?
• What is the purpose of an air turbine starter in engines?
• Which component automatically regulates cabin pressure by venting air during depressurization?