Aviation Machinist Mate (AD) "A" School Week 2 Practice Test

These questions are part of the practice quiz. Start practicing

• What is primarily stored in external tanks on aircraft?
• Which fuel has the highest volatility among JP-4, JP-5, and JP-8?
• What is the role of the deaerator in the oil tank system?
• How many main bearings are typically required in an engine?
• What does the Tachometer (RPM) Indicator signify?
• What is the primary role of the lubrication system filter?
• What determines the location of fuel cells in an aircraft?
• Which part of the APU is responsible for generating power?
• Which methods are associated with producing dynamic electricity?
• What is the role of the nitrogen charged accumulator in the APU starting system?
• What type of oil tank component helps control air pressure within the tank?
• What triggers the Fire Warning Light to illuminate?
• What is the color of jet propellant fuel like JP-5?
• What is the role of the tachometer generator?
• Which systems are included in the Engine Electrical System?
• What does the electronic sequence unit provide for the APU?
• Which component functions to provide an accurate reading of the oil level?
• What type of screens are used to capture contaminants in the oil system?
• What materials are typically used in the construction of engine bearings?
• Which type of valve can be manually operated to shut off fuel flow?
• What system automatically starts the APU and includes safety features for shutdown?
• Which type of pump in a lubrication system is designed to deliver a flow of oil to lubrication points?
• What is another name for the APU mechanics within the aircraft?
• What occurs at the end of a self-test performed by the instrument?
• What is produced by applying pressure to quartz?
• What does the Oil Pressure Indicator display?
• Which indicator shows the condition of the engine's oil pressure?
• Dynamic electricity can be described as:
• What should be done with the battery during the Fuel Cell Entry process?
• Which instrument is typically used for electrical testing in machines?
• Which component is used for starting the APU?
• What must remain constant under varying conditions in a high energy capacitor discharge system?
• Which type of load does a ball bearing primarily handle?
• When servicing the Engine Lubrication System, one should refer to which source?
• Viscosity of a fluid is described as:
• What is the initial action to take before entering a fuel cell area?
• How is the APU started according to the system requirements?
• How do lubrpumping systems typically maintain a constant volume of oil flow?
• What is a requirement for the personnel involved in aircraft fueling?
• What is the function of the In-Flight Refueling System?
• Which piece of equipment is used to detect fuel vapor levels?
• What is the primary purpose of a vent in the oil tank?
• What is the purpose of the aircraft fuel system?
• What is the purpose of the ignitor plugs in an ignition system?
• Dynamic electricity can be best described as:
• Which component is included in the maintenance of an APU at the O Level?
• What do external tanks on an aircraft primarily do?
• What happens when approximately 100 hours of life remains for the meter?
• What is one role of the gear assembly within the APU?
• What is one of the main components of the Lubrication System?
• What is produced by rotating a magnetic field through another magnetic field?
• What type of engine primarily uses petroleum-based lubricating oils?
• Which of the following terms refers to the types of electricity?
• Which property of electricity makes it difficult to measure and control static electricity?
• What is a function of lubrication jets in a lubrication system?
• What is a unique feature of the carbon seal compared to other types?
• What is the function of a check valve in the fuel system?
• What is the primary function of bearings in an engine?
• What are the two primary mediums involved in a lubrication heat exchanger?
• What component measures oil pressure within the lubrication system?
• What method is used by the APU to develop power?
• Which assembly includes the compressor and combustion components?
• Which jet propellant fuel is similar to JP-5 but has a lower flash point?
• Which type of grease is specifically mentioned for use in high-speed applications?
• Which is the correct order of steps for Fuel Cell Entry (During maintenance)?
• What is the primary purpose of the Engine Lubrication System?
• What should be done shortly after the engine is shut down, according to proper procedures?
• What is a characteristic of a gear-type pump?
• Which method of fueling involves using gravity?
• What type of lubrication does the APU lubricating system provide?
• Which type of seal is characterized by its spring-loaded design?
• What is transmitted from the tachometer generator to the tachometer (RPM) indicator?
• What does the compressor/turbine section do in relation to the assembly?
• Which component in the fuel system is critical for fuel quantity measurements?
• What is the opposition to the flow of electrons offered by a device or material called?
• What is the purpose of performing a Foreign Object Damage (FOD) free check?
• What type of valve allows the pilot to control fuel flow for selected purposes?
• What element in lubricating oil helps to prevent engine wear?
• What does a scavenge element pump do?
• What key aspect must be followed to ensure safety during handling procedures?
• Which type of bearing is primarily used on compressor and turbine shafts?
• What is the recommended capacity of the PON-6 pre oiler system?
• Which type of filter is noted for its cleaning and reusability?
• What term describes the physical phenomena arising from the existence and interaction of an electrical charge?
• What type of filter can be cleaned and reused?
• What feature commonly appears on a multimeter's digital display?
• What is one function of the APU?
• Which type of pump is responsible for transferring fuel from various cells to the main tanks?
• What type of lubrication system pump may contain multiple elements with a pressure relief?
• What device measures current, voltage, and resistance in an aircraft system?
• Which lubrication system is used primarily on centrifugal-flow engines?
• What equipment indicates the level of oil in the cockpit?
• The mass rate of fuel flow is measured and reported by which of the following components?
• How are oils graded for use in engines?
• What action is critical to perform if hazardous fumes are suspected in the fuel cell?
• What is the effect of a lubricant that does not provide proper viscosity?
• Which of the following is NOT a component of the Engine Electrical System?
• Which component transmits an electrical signal to indicate the amount of fuel in the tanks?
• What does the gearbox assembly mainly house?
• Which type of fuel cell is located in the interior portion of the wing?
• What design is the turbine section in a single-stage setup?
• Which type of lubrication system stores oil within the gearbox?
• Lubricating oils must be free from which of the following?
• What is the primary function of a centrifugal compressor?
• What does watt measure in terms of electricity?
• What materials are used in the construction of the Thermocouple Assembly?
• Which substances are classified as lubricants?
• Which type of pump in a lubrication system primarily moves oil away from engine components?
• What is indicated by the "OL" feature on a multimeter?
• Which of the following is NOT a type of lubrication system filter?
• What is the primary function of the Engine Temperature Indicating System?
• What does the input leads component in the ignition system do?
• What condition must be detected for the Fire Detection Element to activate the Fire Warning Light?
• What do the various inlets and outlets on an oil tank system facilitate?
• How does the APU assist during ground maintenance?
• What do you call a pump that has both pressure and scavenging capabilities?
• What happens when a positive charge is brought close to a negative charge?
• What type of electricity is characterized by a steady flow in one direction only?
• What action is taken when an overheat condition is sensed in the engine compartment?
• What unit of measurement is used to quantify resistance to current flow?
• What is the primary function of an air-supplied respirator?
• What is the function of a check valve in an oil system?
• What do the red and black leads on a multimeter represent?
• What is an auxiliary power unit (APU)?
• Which lubrication system allows for a larger supply of oil by storing it in an external tank?
• What is the purpose of accessory bearings in an engine?
• What is the primary role of the Fuel Flow Transmitter in the fuel flow indicating system?
• What is the purpose of the Engine Starting System?
• Which valve is primarily responsible for bypassing excess oil?
• What is the role of strainers within the aircraft fuel system?
• Where are external fuel tanks typically mounted on an aircraft?
• What is the primary purpose of the Auxiliary Fuel System?
• What does the Overload Indication (OL) signify?
• What type of ignition system does the APU use?
• What is the overall role of the bleed air in labyrinth seals?
• What is the method of producing electricity by joining two dissimilar metals and applying heat?
• What type of combustion chamber is mentioned for the combustion section?
• What is the flash point characteristic of JP-4 fuel?
• Why is it important for a lubrication system to filter contaminants?
• Which component is likely to fail if the bearings are not properly lubricated?
• What role does bleed air play in a labyrinth seal?
• Which valve is used to control the level of fuel in fuel cells or tanks?
• What component is designed to prevent large foreign particles from entering the fuel system?
• What systems are included in the aircraft fuel subsystems?
• What system is used to dump excess fuel overboard?
• Which term refers to a practical form of current flow used in everyday electrical applications?
• What fire safety equipment is required during the fueling process?
• What is the purpose of the PON-6 pre oiler system?
• What are the two main categories of lubricating oils?
• Which valve helps in managing fuel flow to enhance safety in case of fire?
• What phenomenon involves electrical generation through a chemical reaction?
• What is a primary purpose of the APU?
• Which component is responsible for sending a proportional electrical signal regarding oil pressure?
• What type of oil is capable of withstanding higher operating temperatures and bearing speeds of a gas turbine engine?
• What does the APU also supply during flight?
• What does the combustion section provide for the APU?
• What is the key function of fuel probes in the fuel system?
• What primary functions must oils fulfill as lubricants?
• What is a primary function of the APU lubrication system?
• What type of valve is referred to as a gate valve?
• Which system provides pressure fueling and defueling on the ground?
• What differentiates integral cells from traditional fuel tanks?
• What type of fuel cells are described as soft and bladder-type, constructed from rubber?
• What type of temperature does the Engine Temperature Indicator display?
• What is the primary function of a labyrinth seal in aviation applications?
• What type of filter is used in lubrication systems to remove contamination from lubricants?
• What components are essential parts of a bearing?
• What type of signal does the Oil Pressure Transmitter send to the cockpit?
• Where are fuel cells typically located in an aircraft?
• In the context of an oil tank, what is the purpose of air inlets?
• What is the advantage of having a transfer pump in an aircraft fuel system?
• What is defined as the amount of force being applied to a circuit to produce electron flow?
• What component is responsible for filtering contaminants from the oil?
• What is the primary fuel used for jet propulsion that has a high flash point?
• What is the main advantage of using roller bearings over ball bearings?
• What is the purpose of the vent system in an aircraft fuel system?
• What safety precaution should be taken regarding grounding during aircraft fueling?
• What is the designation for the military specification of synthetic oil used in aviation?
• What occurs when the Thermocouple Assembly is heated?
• What type of current is typically associated with a flashlight?
• Which system would indicate an increase in engine RPM?
• Which type of current flows in one direction only?
• Which of the following characteristics describes the ideal grease for aviation use?
• Where are the components of the Fuel Flow Indicating System typically mounted?
• What happens if the Engine Temperature Indicator displays extreme temperatures?
• What is the function of the Fire Detection Element in an engine fire detection system?
• Which APU component, when illuminated, indicates a fire issue?
• Which device can indicate oil levels in the reservoir?
• What does the transformer (exciter) in the ignition system primarily do?
• What is the function of the ignitor leads in the engine ignition system?
• What is the primary function of fuel cells in an aircraft?
• General Purpose Grease is primarily used for which application?
• What is the primary type of aviation fuel characterized as NATO F-34?
• What is the main purpose of the fuel pump in the APU fuel system?
• How does the aircraft benefit from jettisonable external tanks?
• What is the purpose of feed cells in an aircraft fuel system?
• How does the APU fuel system ensure fuel supply?
• What does a multimeter measure?
• What is the role of Portable Purging Equipment in aircraft maintenance?
• Which of the following valves can control fuel flow during refueling and fuel transfer?
• What is used to drain condensation from the fuel system?
• What characterizes a boost pump in an aircraft fuel system?
• What must the aircraft be on in order to check the oil without interference from attitude?
• What do the lengths and weights of rotors determine in an engine?
• What type of bearing component helps maintain the alignment of a bearing?
• What type of lighting is used to aid visibility and is resistant to sparks?
• What does a wet sump lubrication system rely on in comparison to a dry sump?
• Which valve limits maximum pressure and returns excess oil to the pump?
• What is advised regarding the positioning of the fueling unit during aircraft fueling?
• What is static electricity primarily produced by?
• What phenomenon occurs when two like charges repel each other?
• Which type of current reverses direction at specific intervals?
• What component is used to drain excess fuel from the aircraft's fuel system?
• What action is required to manually shut down the APU in case of a fire?
• Molybdenum Disulfide is generally used for what type of surfaces?
• The Fuel Flow Indicator displays fuel flow in what unit?
• What feature do both gear-type and gerotor-type pumps share?
• How far should fueling operations be conducted away from operating aircraft?
• What is true about the size of external fuel tanks?
• What is the primary function of aircraft fuel pumps?
• Which of the following best describes ball bearings?
• Which indicator would display the amount of fuel flowing to the engine in operational units?
• What characteristic defines thread seals used in aviation?
• Under what conditions does the APU Safety Control System initiate an automatic shutdown?
• What characteristic must lubricants primarily exhibit?
• Extreme High Temperature Grease is typically used for which application?
• What are the two main types of pumps used in lubrication systems?
• Which device produces electricity by surrounding two metallic plates with a chemical electrolyte?
• What is the primary function of a reservoir in the system?
• What is the purpose of a lubrication heat exchanger?
• Which step is NOT part of the Fuel Cell Entry Process before maintenance?
• Which term refers to the quantity of electricity flowing through a circuit?
• What functionality is associated with electrically operated shut-off valves?
• What is the main function of a bypass valve in a lubrication system?
• Why is it important to follow the correct procedures during the servicing of the lubrication system?
• How many types of aircraft fuel pumps are stated?
• What is the main function of lubrication jets or nozzles?
• What is the primary function of the pressurization system in the fuel setup?
• In the Fuel Cell Entry process, what should be ensured about the safety observer?
• Which types of grease are identified for use in aviation?
• How does the In-Flight Refueling System fill the fuel tanks of a receiving aircraft?
• Which component helps in ensuring a constant supply of oil to the main oil pump?
• Which components are part of the engine ignition system?
• Which aircraft maintenance support equipment includes tools for explosive-proof applications?
• Which of the following describes static electricity?
• In terms of flash point, how does JP-5 compare to JP-4 and JP-8?
• What type of loads do roller bearings primarily absorb?
• Which factor is crucial in determining the correct bearing for an application?
• Which type of valve is closed to stop fuel flow in case of fire?
• The Flight Station displays which element as part of the Engine Fire Detection System?
• What type of engine lubrication system is mainly utilized on axial-flow engines?
• What is a significant hazard associated with jet propellants?
• What is the primary purpose of the lubrication system pump?
• Which system is responsible for indicating the engine's oil pressure to the pilot?