AMOC Block 3 Test Aircraft Surface

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  • 1/100 Questions

    (301a) What are the four forces acting on an aircraft in flight?

    • Lift, thrust, drag, weight
    • Lift, thrust, drag, mass
    • Lift, power, drag, weight
    • Lift, thrust, friction, weight
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About This Quiz


Welcome to this Amoc Block 3 Test on Aircraft Surface! In this one, we’ll be seeing how much you know about the four different forces at play during a flight, the main three types of drag, how to decrease induced drag and much more! What can you tell us?

AMOC Block 3 Test Aircraft Surface - Quiz

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  • 2. 

    (301b) What are the three axis of movement for aircraft

    • X, Y, Z

    • Roll, Pitch, Yaw

    • Roll, Yaw, Tilt

    • Roll, Pitch, Camber

    Correct Answer
    A. Roll, Pitch, Yaw
    Explanation
    The three axis of movement for an aircraft are roll, pitch, and yaw. Roll refers to the rotation of the aircraft along its longitudinal axis, causing one wing to rise and the other to lower. Pitch refers to the rotation of the aircraft along its lateral axis, causing the nose to move up or down. Yaw refers to the rotation of the aircraft along its vertical axis, causing the nose to move left or right. These movements are essential for controlling the direction and stability of the aircraft during flight.

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  • 3. 

    (302a)  What aircraft component contains stainless steel tubing in exposed areas?

    • Landing gear

    • Flap actuator

    • Aileron Actuator

    • Canopy actuator

    Correct Answer
    A. Landing gear
    Explanation
    The landing gear is the correct answer because it contains stainless steel tubing in exposed areas. Stainless steel is often used in aircraft components for its corrosion resistance and strength, making it suitable for the demanding conditions of the landing gear. The exposed areas of the landing gear require durable materials to withstand the elements and potential damage during landing and takeoff.

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  • 4. 

    (302a) What is the purpose of the sequencing valve?

    • Directs fluid flow to or from actuator

    • Allow fluid flow in 1 direction

    • Provide pressure in timed increments

    • Relieve excess pressure

    Correct Answer
    A. Provide pressure in timed increments
    Explanation
    The purpose of the sequencing valve is to provide pressure in timed increments. This means that it controls the timing and amount of pressure that is delivered to the actuator. It ensures that the actuator receives the necessary pressure at specific intervals, allowing for precise and controlled movement.

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  • 5. 

    (303a) What jet fuel is used on Navy aircraft carriers and the Presidential Fleet

    • JP-5

    • JP-8

    • Avgas

    • JP-4

    Correct Answer
    A. JP-5
    Explanation
    JP-5 is the correct answer because it is the type of jet fuel used on Navy aircraft carriers and the Presidential Fleet. JP-5 is a highly refined kerosene-based fuel that is specifically designed for use in military aircraft. It has a high flash point and low volatility, making it safer to handle and store on ships. JP-5 also has a high thermal stability and provides efficient performance in a wide range of operating conditions, making it suitable for use in naval and presidential aircraft.

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  • 6. 

    (301b) Why is it necessary to hanger an aircraft for flight control rigging?

    • Constant temperature and light

    • Constant supervision and protection from the wind

    • Constant temperature and protection from the wind

    • Constant power and protection from the wind

    Correct Answer
    A. Constant temperature and protection from the wind
    Explanation
    It is necessary to hang an aircraft for flight control rigging because it provides a controlled environment with constant temperature and protection from the wind. Hanging the aircraft allows for accurate measurements and adjustments to be made to the flight controls, ensuring that they are properly aligned and functioning correctly. The constant temperature helps maintain the integrity of the materials and prevents any expansion or contraction that could affect the rigging. Additionally, protection from the wind eliminates any external factors that could interfere with the rigging process.

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  • 7. 

    (301e) The electrochemical deterioration of a substance because of a reaction to the environment defines what?

    • Pitting

    • Corrosion

    • Heat reaction

    • Natural state of metals

    Correct Answer
    A. Corrosion
    Explanation
    The correct answer is corrosion because the electrochemical deterioration of a substance due to a reaction with the environment is commonly referred to as corrosion. Corrosion occurs when a metal is exposed to moisture, oxygen, or other chemicals, leading to the formation of rust or other forms of degradation. Pitting, heat reaction, and natural state of metals do not accurately describe the process of electrochemical deterioration caused by environmental reactions.

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  • 8. 

    (302a) What is the color of the MIL-H-83282 hydraulic fluid?

    • Blue

    • Clear

    • Pink

    • Red

    Correct Answer
    A. Red
    Explanation
    The color of the MIL-H-83282 hydraulic fluid is red.

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  • 9. 

    (302a) What is the purpose of the hydraulic pump?

    • Supply unpressured fluid to system components

    • Store pressurized fluid

    • Supply fluid under pressure to components

    • Cool-down overheated hydraulic fluid

    Correct Answer
    A. Supply fluid under pressure to components
    Explanation
    The purpose of the hydraulic pump is to supply fluid under pressure to components. This is necessary in hydraulic systems to generate the force required for various operations. The pump pressurizes the fluid and ensures that it is delivered to the different components, allowing them to perform their intended functions effectively.

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  • 10. 

    (302a) What is the purpose of filters in the hydraulic system?

    • Remove contaminants

    • Store fluid

    • Distribute fluid

    • Maintain pressurized fluid

    Correct Answer
    A. Remove contaminants
    Explanation
    Filters in a hydraulic system serve the purpose of removing contaminants. Contaminants such as dirt, debris, and particles can enter the hydraulic system and cause damage to the components, leading to reduced efficiency and potential failure. By using filters, these contaminants are trapped and prevented from circulating within the system, ensuring clean fluid flows through the system and minimizing the risk of damage. Removing contaminants also helps to maintain the overall performance and longevity of the hydraulic system.

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  • 11. 

    (304b) What is the purpose of the inlet guide vains (IGVs)?

    • Supports radially

    • Connects the turbine to the compressor

    • Makes it possible to use a smaller starter.

    • Direct air into compressor

    Correct Answer
    A. Direct air into compressor
    Explanation
    The purpose of the inlet guide vanes (IGVs) is to direct air into the compressor. The IGVs are designed to control the flow of air entering the compressor, ensuring that it is directed efficiently and effectively. By directing the air into the compressor, the IGVs help to optimize the performance of the compressor, leading to improved overall system efficiency.

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  • 12. 

    (301c) What makes up the landing gear? 

    • Shock Struts, Trunnion, and Stiffeners

    • Split wheel, Rib, and Brake Assembly

    • Truck Assembly, Spars, and Trunnion

    • Shock Struts, Trunnion, and Truck Assembly

    Correct Answer
    A. Shock Struts, Trunnion, and Truck Assembly
    Explanation
    The landing gear is made up of shock struts, trunnion, and truck assembly. Shock struts are used to absorb the impact of landing and provide cushioning. Trunnion is a pivoting mechanism that allows the landing gear to retract and extend. The truck assembly consists of wheels, brakes, and other components that support the weight of the aircraft during landing and taxiing.

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  • 13. 

    (301f) Ultrasonic inspections are useful to detect 

    • Internal cracks

    • Surface defects

    • Slipped and abnormal screws

    • New babies

    Correct Answer
    A. Internal cracks
    Explanation
    Ultrasonic inspections are useful for detecting internal cracks because ultrasonic waves can penetrate through materials and are able to detect changes in density or irregularities within the material. This makes it an effective method for identifying cracks that may not be visible on the surface. Surface defects and slipped or abnormal screws can often be detected visually or through other inspection methods, whereas ultrasonic inspections are specifically designed to identify internal flaws. The mention of "new babies" is unrelated and does not pertain to the topic of ultrasonic inspections.

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  • 14. 

    (303a) What are the additives used in jet fuel

    • Icing Inhibitor, corrosion inhibitor, conductivity additive, biocidal additive

    • Catalytic cracking agent, autoignition inhibitor, Oxygenators, Antiknocking agents

    • Stabilizers, Lead scavengers, Vaporization additive, Efficiency additive

    • Antioxidants, Antiknocking agents, Fuel dyes, lubricants

    Correct Answer
    A. Icing Inhibitor, corrosion inhibitor, conductivity additive, biocidal additive
    Explanation
    The additives used in jet fuel include icing inhibitor, corrosion inhibitor, conductivity additive, and biocidal additive. These additives are used to prevent the formation of ice in the fuel system, protect against corrosion, improve conductivity, and prevent the growth of microorganisms in the fuel.

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  • 15. 

    (301b) Which combine flight control surface controls pitch and yaw?

    • Flaperons

    • Ruddervator

    • Stabalator

    • Elevon

    Correct Answer
    A. Ruddervator
    Explanation
    A ruddervator is a combination of a rudder and an elevator, which means it can control both pitch and yaw. The ruddervator is typically found on aircraft with a V-tail configuration, where the traditional vertical stabilizer and horizontal stabilizer are combined into a single unit. By moving the ruddervator, the pilot can control the aircraft's pitch (up and down movement) as well as its yaw (side to side movement). Therefore, the ruddervator is the correct answer to the question.

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  • 16. 

    (301b) What flight control surface is always lowered during take off and landing? (they increase left and drag)

    • Elevator

    • Spoiler

    • Flaps

    • Speed brakes

    Correct Answer
    A. Flaps
    Explanation
    Flaps are always lowered during take off and landing. Flaps are a type of flight control surface located on the wings of an aircraft. When the flaps are lowered, they increase the lift and drag of the aircraft, allowing it to maintain a slower speed and a steeper descent angle during landing. This increased lift helps the aircraft to generate more lift at lower speeds, enabling safer takeoffs and landings. Therefore, flaps are an essential component for the aircraft's control and stability during these critical phases of flight.

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  • 17. 

    (301b) What helicopter flight control(s) direct pitch and roll movement?

    • Tail rotor(s)

    • Swash Plate and Main Rotor

    • Collective

    • Horizontal Stabalizer

    Correct Answer
    A. Swash Plate and Main Rotor
    Explanation
    The swash plate and main rotor are responsible for directing the pitch and roll movement of a helicopter. The swash plate is a mechanical device that allows the pilot to control the pitch of the rotor blades, which in turn controls the vertical movement of the helicopter. The main rotor, on the other hand, generates lift and provides the necessary force for the helicopter to roll or tilt from side to side. Together, these two components play a crucial role in maneuvering the helicopter in the desired direction.

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  • 18. 

    (302a) Which system develops, limits, and direct pressure to actuate various mechanisms on the aircraft?

    • Fuel System

    • Aircraft Structural

    • Hydraulic System

    • Engine

    Correct Answer
    A. Hydraulic System
    Explanation
    The hydraulic system develops, limits, and directs pressure to actuate various mechanisms on the aircraft. It uses fluid power to transmit force and motion, allowing for the operation of components such as landing gear, brakes, flight controls, and cargo doors. The hydraulic system is essential for the safe and efficient operation of an aircraft, providing the necessary power to perform critical functions during flight.

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  • 19. 

    (302a) What are the characteristics of hydraulic hoses?

    • Aluminum, low pressure

    • Rubber/Teflon, flexible

    • Titanium

    • Stainless steel

    Correct Answer
    A. Rubber/Teflon, flexible
    Explanation
    Hydraulic hoses are typically made of rubber or Teflon material because they need to be flexible in order to handle the high pressures and movements involved in hydraulic systems. Aluminum, titanium, and stainless steel are not suitable materials for hydraulic hoses as they are not flexible enough to withstand the constant pressure and movement. Therefore, the correct answer is rubber/Teflon, flexible.

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  • 20. 

    (302b) Which of the following is a safety precaution in hydraulic maintenance?

    • Do not wear PPE

    • Allow higher ranked airman to do the work

    • Wear reflective belt

    • Require visual confirmation that surface is clear prior to movement

    Correct Answer
    A. Require visual confirmation that surface is clear prior to movement
    Explanation
    Requiring visual confirmation that the surface is clear prior to movement is a safety precaution in hydraulic maintenance. This ensures that there are no obstructions or hazards in the path of the hydraulic equipment before it is operated or moved, reducing the risk of accidents or damage. It is important to visually inspect the area to ensure the safety of personnel and equipment.

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  • 21. 

    (301c) What are arresting hooks used for? 

    • Fighters w/emergencies

    • Heavies w/emergencies

    • Heavies w/out emergencies

    • Both Heavies and Fighters w/emergencies

    Correct Answer
    A. Fighters w/emergencies
    Explanation
    Arresting hooks are used for fighters with emergencies. These hooks are designed to catch arresting cables on aircraft carriers, enabling the fighter aircraft to rapidly decelerate and come to a stop during emergency situations such as failed takeoff or landing. The use of arresting hooks allows for quick and safe recovery of the aircraft, preventing potential accidents or damage to the aircraft and the carrier.

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  • 22. 

    (301c) What location system references from bottom to top? 

    • Body Water Line

    • Body Buttock line

    • Wing Station number

    • Fuselage station number

    Correct Answer
    A. Body Water Line
    Explanation
    The correct answer is Body Water Line. The Body Water Line is a reference point used in aircraft design and measurement. It is a horizontal line that represents the lowest point of the fuselage where it meets the water when the aircraft is floating on water. This reference point is used for various calculations and measurements in the design and construction of aircraft.

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  • 23. 

    (301c) What Location system is measured through the wings? 

    • Body Water Line

    • Body Buttock line

    • Wing Station number

    • Fuselage station number

    Correct Answer
    A. Wing Station number
    Explanation
    The wing station number is a location system that is measured through the wings. It is used to identify specific points along the wings, allowing for precise measurements and reference points during aircraft design, maintenance, and performance evaluation. This system helps in determining the position of various components and equipment on the wings, ensuring proper balance and weight distribution.

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  • 24. 

    (301f) Non Destructive Inspection (NDI) is the inspection of a structure or component in a manner that will not impair its future usefulness! 

    • Thanks Foust! for the purpose of NDI

    • Is this a question?

    • I haven’t seen “Sausage Party”

    Correct Answer
    A. Thanks Foust! for the purpose of NDI
  • 25. 

    (301f) The oil analysis program samples must be taken… 

    • Immediately after engine shutdown

    • At least bimonthly

    • Within 30 minutes of engine shutdown

    • 30 minutes prior to engine start

    Correct Answer
    A. Within 30 minutes of engine shutdown
    Explanation
    The oil analysis program samples need to be taken within 30 minutes of engine shutdown. This is because the oil needs to be analyzed while it is still warm and in its working condition. Waiting longer than 30 minutes may result in the oil cooling down and settling, which can affect the accuracy of the analysis. Taking the samples immediately after engine shutdown or 30 minutes prior to engine start would not provide the same accurate results as taking them within 30 minutes of engine shutdown.

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  • 26. 

    (301f) What is the first step of the liquid penetrate test? 

    • Clean the surface and remove paint

    • Check surface for illegal substances

    • Notify the proper authority of defect

    • Get duct tape

    Correct Answer
    A. Clean the surface and remove paint
    Explanation
    The first step of the liquid penetrate test is to clean the surface and remove paint. This is necessary to ensure that the surface is free from any contaminants or substances that could interfere with the test results. Cleaning the surface also helps to improve the adhesion of the liquid penetrate to the surface, allowing for better detection of any defects or flaws. Removing paint is important because it can act as a barrier, preventing the liquid penetrate from properly penetrating and highlighting any defects.

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  • 27. 

    (304a) Newton's Third law of motion states

    • For every action, there is an equal and opposite reaction

    • A body at rest will remain at rest unless acted upon by an outside force

    • A change in motion is proportional to the force applied

    • I was smarter than any man to ever live

    Correct Answer
    A. For every action, there is an equal and opposite reaction
    Explanation
    The given correct answer is "For every action, there is an equal and opposite reaction." This statement is a concise summary of Newton's Third Law of Motion, which states that when an object exerts a force on another object, the second object exerts a force of equal magnitude but in the opposite direction on the first object. This law explains the relationship between the forces acting on two interacting objects and how they always come in pairs.

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  • 28. 

    (301a) What are the four characteristics of air?

    • P:Pressure, V:Viscosity, d:Density, T:Temperature

    • P:Pressure, R:Gas Content (humidity), d:mass, T:Temperature

    • P:Pressure, R:Gas Content (humidity), d:Density, V:Volume

    • P:Pressure, R:Gas Content (humidity), d:Density, T:Temperature

    Correct Answer
    A. P:Pressure, R:Gas Content (humidity), d:Density, T:Temperature
    Explanation
    The correct answer is P:Pressure, R:Gas Content (humidity), d:Density, T:Temperature. These four characteristics accurately describe air. Pressure refers to the force exerted by air molecules on a surface. Gas content or humidity refers to the amount of water vapor present in the air. Density is the mass of air molecules per unit volume, and temperature is a measure of the average kinetic energy of air molecules.

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  • 29. 

    (302a) Which valve directs fluid flow to or from actuator

    • Shutoff valve

    • Selector valve

    • Sequencing valve

    • Relief valve

    Correct Answer
    A. Selector valve
    Explanation
    A selector valve is a type of valve that directs fluid flow to or from an actuator. It allows the operator to choose which actuator or system to activate by selecting the desired flow path. This valve is commonly used in hydraulic and pneumatic systems where multiple actuators need to be controlled independently.

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  • 30. 

    (302a) Which components changes hydraulic pressure to mechanical force?

    • Pump

    • Valves

    • Accumulators

    • Actuators

    Correct Answer
    A. Actuators
    Explanation
    Actuators are the components that convert hydraulic pressure into mechanical force. They are responsible for converting the energy from the hydraulic system into physical movement or force. Actuators are commonly used in various applications, such as in industrial machinery, robotics, and automotive systems, where they play a crucial role in translating the hydraulic pressure into the desired mechanical output.

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  • 31. 

    (302b) What is the purpose of the quick disconnect?

    • Stop flow of fluid to normal system

    • Stop flow of fluid to emergency system

    • Connection for hydraulic test stand

    • Connection for Dash 60

    Correct Answer
    A. Connection for hydraulic test stand
    Explanation
    The purpose of the quick disconnect is to provide a connection for a hydraulic test stand. This allows for easy and efficient testing of hydraulic systems without the need for complex and time-consuming connections.

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  • 32. 

    (304b)What engine component reduces rotation speed for propeller?

    • Powerplant Section

    • Turbo prop

    • Torquemeter assembly

    • Reduction gear box

    Correct Answer
    A. Reduction gear box
    Explanation
    The reduction gear box is the engine component that reduces the rotation speed for the propeller. This is necessary in turbo prop engines, where the propeller is driven by a turbine. The reduction gear box allows the turbine to rotate at high speeds while reducing the output speed to a suitable level for the propeller. This ensures that the propeller operates efficiently and effectively, providing the necessary thrust for the aircraft.

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  • 33. 

    (301a) What wing configuration increases roll stability?

    • Dihedral

    • Anhedral

    • Mid Wing

    • High AOA

    Correct Answer
    A. Dihedral
    Explanation
    Dihedral is a wing configuration that increases roll stability. Dihedral refers to the upward angle of the wings when viewed from the front or top of the aircraft. This design causes the aircraft to naturally roll back to its original position when disturbed, making it more stable in flight. Anhedral, on the other hand, refers to a downward angle of the wings and reduces roll stability. Mid wing and high AOA (Angle of Attack) are not directly related to roll stability.

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  • 34. 

    (304c) Which engine component provides power to the exciter box and engine control system (i.e. DEEC, FADEC)?

    • Engine-driven generator

    • Stator driven generator

    • Power take-off shaft (PTO)

    • Permanent magnet generator

    Correct Answer
    A. Engine-driven generator
    Explanation
    The engine-driven generator provides power to the exciter box and engine control system (i.e. DEEC, FADEC). This component is directly driven by the engine and generates electrical power that is used to operate various systems and components of the engine, including the exciter box and engine control system.

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  • 35. 

    (303a) What is the number one fuel contaminant

    • Water

    • Metals

    • Oil

    • Dirt

    Correct Answer
    A. Water
    Explanation
    Water is the number one fuel contaminant because it can cause several issues in the fuel system. When water enters the fuel tank, it can lead to corrosion of metal parts, promote the growth of microbes, and cause fuel filter blockages. Water can also disrupt the combustion process, leading to poor engine performance and increased emissions. Therefore, it is crucial to prevent water contamination in fuel to ensure the proper functioning of the engine.

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  • 36. 

    (303b) What part in the engine feed system is used to pressurize fuel

    • Cross feed valve

    • Boost pump

    • Engine feed manifold

    • Single point receptacle

    Correct Answer
    A. Boost pump
    Explanation
    The boost pump is used in the engine feed system to pressurize fuel. It helps to ensure a consistent and reliable flow of fuel to the engine, especially during high power demands or when the aircraft is in certain flight conditions. The boost pump increases the pressure of the fuel before it is delivered to the engine, ensuring that it reaches the necessary pressure levels for proper combustion and performance.

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  • 37. 

    (305a) What should you do if the fired warning indicator is visible?

    • Contact Q/A

    • Notify supply

    • Start panicking

    • Contact egress technician

    Correct Answer
    A. Contact egress technician
    Explanation
    If the fired warning indicator is visible, the correct course of action is to contact the egress technician. This indicates that there may be a problem with the ejection system or the seat, and it is important to involve a trained professional to assess and address the issue. Contacting the egress technician ensures that the problem is handled safely and effectively.

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  • 38. 

    (304d) Who is responsible for base engine account? 

    • Command Engine Managers (CEM)

    • Base Engine Managers (BEM)

    • Wing CC

    • Wing CV

    Correct Answer
    A. Base Engine Managers (BEM)
    Explanation
    Base Engine Managers (BEM) are responsible for the base engine account.

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  • 39. 

    (301e) Which of the following are conditions that must exist for corrosion to occur? 

    • Anode

    • Heat

    • Low temp

    • Electrode

    Correct Answer
    A. Anode
    Explanation
    Corrosion occurs when there is an anode present. An anode is the electrode where oxidation takes place during a redox reaction. In the context of corrosion, the anode is the metal or material that is being corroded. Without an anode, there would be no corrosion. The other options, such as heat and low temperature, are not directly related to the conditions necessary for corrosion to occur.

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  • 40. 

    (302a) Identify the characteristics of MIL-H-83282 hydraulic fluid

    • Synthetic based, Fire Resistant

    • Petroleum based, Flammable

    • Ester fluid, Fire resistant

    • Synthetic based, Flammable

    Correct Answer
    A. Synthetic based, Fire Resistant
    Explanation
    The correct answer is synthetic based, fire resistant. MIL-H-83282 hydraulic fluid is a type of hydraulic fluid that is made from synthetic materials and is designed to be fire resistant. This is an important characteristic for hydraulic fluid as it helps to prevent fires and ensure the safety of the equipment and personnel.

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  • 41. 

    (302a) Which valve allow fluid flow in 1 direction?

    • Shutoff valve

    • Check valve

    • Selector valve

    • Sequencing valve

    Correct Answer
    A. Check valve
    Explanation
    A check valve is designed to allow fluid flow in only one direction, preventing backflow or reverse flow. It contains a one-way valve that opens when the fluid flows in the desired direction and closes to prevent flow in the opposite direction. This ensures that the fluid can only move in a single direction, making it an appropriate choice for applications where backflow needs to be prevented.

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  • 42. 

    (304b) Which engine component accelerates and direct gases to turbine rotors?

    • Nozzle guide vanes

    • Turbine rotor assembly

    • Labyrinth seals

    • Clamshells

    Correct Answer
    A. Nozzle guide vanes
    Explanation
    Nozzle guide vanes are responsible for accelerating and directing gases to the turbine rotors. They are designed to guide the flow of hot gases from the combustion chamber towards the turbine blades. By controlling the direction and velocity of the gases, the nozzle guide vanes ensure efficient energy transfer to the turbine rotors, which in turn drives the engine.

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  • 43. 

    (304b) What slows down air on supersonic aircraft and provides subsonic air to the engine?

    • Axial Flow compressor

    • Stator Vanes

    • Convergent Divergent inlet

    • Reduction Gear box

    Correct Answer
    A. Convergent Divergent inlet
    Explanation
    The convergent-divergent inlet is responsible for slowing down the supersonic air and providing subsonic air to the engine. This type of inlet has a converging section that compresses the incoming air and a diverging section that expands the air to subsonic speeds before it enters the engine. This design allows for efficient air compression and prevents the engine from receiving supersonic air, which could cause damage and reduce performance.

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  • 44. 

    (304b) Which combustion section has a single concentric burner can and used on newer aircraft

    • Annular combustion chamber

    • Can-annular combustion chamber

    • Can combustion chamber

    • Transition liner

    Correct Answer
    A. Annular combustion chamber
    Explanation
    The correct answer is the annular combustion chamber. This type of combustion section has a single concentric burner can and is used on newer aircraft. The annular combustion chamber allows for better fuel-air mixing and combustion efficiency compared to other types of combustion chambers. It also provides a more compact design, which is beneficial for modern aircraft with limited space.

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  • 45. 

    (301a) How do you decrease induced drag?

    • Wax the aircraft

    • Spoilers

    • Winglets

    • Wing fence

    Correct Answer
    A. Winglets
    Explanation
    Winglets are used to decrease induced drag. Induced drag is caused by the generation of lift and is inversely proportional to the aspect ratio of the wing. Winglets, which are small vertical extensions at the tips of the wings, help to increase the effective aspect ratio of the wing, reducing the vortices formed at the wingtips and subsequently decreasing induced drag. This improves the overall efficiency of the aircraft and reduces fuel consumption.

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  • 46. 

    (301e) What type of corrosion occurs at a contact point of dissimilar metals when an electrolyte is present?

    • Pitting

    • Uniform

    • Galvanic

    • Exfoliation

    Correct Answer
    A. Galvanic
    Explanation
    Galvanic corrosion occurs at a contact point of dissimilar metals when an electrolyte is present. This type of corrosion happens when two different metals are in contact with each other and an electrolyte, such as water or saltwater, is present. The electrolyte acts as a conductor, allowing a flow of electrons between the metals. This creates an electrochemical reaction, causing the metal with a higher electrochemical potential to corrode while the metal with a lower electrochemical potential remains protected. Galvanic corrosion can result in localized damage, known as pitting, on the metal surface.

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  • 47. 

    (302a) Which of the following components do the hydraulic system operate with engine driven pump?

    • Wings

    • Canopy

    • Landing Gear light

    • Landing gear

    Correct Answer
    A. Landing gear
    Explanation
    The hydraulic system operates with an engine-driven pump to control and operate the landing gear. The landing gear is an essential component of an aircraft that allows it to take off, land, and taxi safely. The hydraulic system provides the necessary power to extend and retract the landing gear, ensuring proper functionality and safety during flight operations.

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  • 48. 

    (302a) What are the four functions of the accumulator?

    • A. Stop fluid flow, relieve excess pressure, store fluid, Assist pump

    • B. Allow fluid flow, allow excess pressure, dump fluid, Assist pump

    • C. Reserve un-pressurized fluid, dampen surge pressure, assist pump under peak load, supply normal system only

    • D. Reserve fluid under pressure, dampen surge pressure, assist pump under peak load, supply emergency pressure

    Correct Answer
    A. D. Reserve fluid under pressure, dampen surge pressure, assist pump under peak load, supply emergency pressure
    Explanation
    The accumulator serves four functions: to reserve fluid under pressure, dampen surge pressure, assist the pump under peak load, and supply emergency pressure. This means that the accumulator stores fluid under pressure, which can be used in emergencies or to assist the pump during periods of high demand. It also helps to stabilize the pressure in the system by dampening any surges or fluctuations. Overall, the accumulator plays a crucial role in maintaining the proper functioning and stability of the hydraulic system.

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  • 49. 

    (301c) What location system starts from the nose to tail, measured in inches? 

    • Body Water Line

    • Body Booty(buttock) line

    • Wing Station number

    • Fuselage station number

    Correct Answer
    A. Fuselage station number
    Explanation
    The fuselage station number is a location system that starts from the nose to tail, measured in inches. It is used to identify specific points along the fuselage of an aircraft for various purposes such as maintenance, design, and structural analysis. This system allows engineers and technicians to accurately reference and communicate specific locations on the aircraft's fuselage.

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  • Current Version
  • Jun 21, 2023
    Quiz Edited by
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  • Aug 08, 2016
    Quiz Created by
    Mark Creel

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