2A551 Practice Test Volume 3 Test 2

52 Questions | Total Attempts: 70

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Practice Test Quizzes & Trivia

Questions and Answers
  • 1. 
    A well designed aircraft fuel system will ensure
    • A. 

      Positive and negative flow

    • B. 

      Negative fuel flow under all conditions

    • C. 

      Positive fuel flow under positive conditions

    • D. 

      Positive and reliable fuel flow under all conditions

  • 2. 
    The three types of shut off valves used in the crossfeed fuel system are the
    • A. 

      Rotary plug, disc and check

    • B. 

      Disc, check and sliding gate

    • C. 

      Sliding gate, rotary plug and disc

    • D. 

      Check, sliding gate, and rotary plug

  • 3. 
    The basic purpose of the fuel vent system is to
    • A. 

      Move fuel from tank to tank

    • B. 

      Pressurize the fuel from transfer

    • C. 

      Remove residual fuel from manifolds

    • D. 

      Prevent the rupture or collapse of the fuel tanks

  • 4. 
    The fuel subsystem designed to minimize fuel boiling is
    • A. 

      Vent

    • B. 

      Scavenge

    • C. 

      Crossfeed

    • D. 

      Pressurization

  • 5. 
    The minimum distance and aircraft should be parked from the hangar prior to defueling is
    • A. 

      50 ft

    • B. 

      75 ft

    • C. 

      100 ft

    • D. 

      150 ft

  • 6. 
    The air-refueling (A/R) receptacle is operated
    • A. 

      Hydraulically, but controlled electrically

    • B. 

      Electrically, but controlled hydraulically

    • C. 

      Electrically, but controlled pneumatically

    • D. 

      Hydraulically but controlled pneumatically

  • 7. 
    The output pressure and the flow ratings of a centrifugal type fuel pump are greater than the system needs in order to
    • A. 

      Prevent fuel boiling and evaporation at high altitudes

    • B. 

      Provide an ample supply of fuel in case of a single pump failure

    • C. 

      Provide fuel to the engines during negative g's or inverted flight conditions

    • D. 

      Prevent the reverse flow of fuel from a pump with a greater pressure output

  • 8. 
    The kind of centrifugal pump is used when a fuel supply is required during periods of negative gravity conditions is
    • A. 

      A rotary-vane

    • B. 

      A top-mounted

    • C. 

      A dual-impeller

    • D. 

      An in-line ejector

  • 9. 
    What characteristics distinguishes the ejector-type fuel pump from other types of fuel pumps?
    • A. 

      Is hydraulically driven.

    • B. 

      Will operate without fuel.

    • C. 

      Contains no moving parts.

    • D. 

      Is activated by an electric motor.

  • 10. 
    The arrow stamped on the body of a fuel system check valve indicates
    • A. 

      Direction of free flow

    • B. 

      Direction of restricted flow

    • C. 

      Location of the drilled hole in the valve

    • D. 

      Location of the manufacture's data block

  • 11. 
     One disadvantage of a sliding gate fuel system is that it
    • A. 

      Is large and heavy

    • B. 

      Cannot control a large flow of fuel

    • C. 

      Cannot withstand extreme pressures.

    • D. 

      Tends to restrict fuel flow when open

  • 12. 
    The fuel system component used to prevent excessive pressure from building up in trapped lines is the
    • A. 

      Thermal relief valve

    • B. 

      Pressure relief valve

    • C. 

      One way check valve

    • D. 

      Spring loaded relief

  • 13. 
    Another name for the disc type valve in a fuel system is
    • A. 

      Butterfly

    • B. 

      Swivel vane

    • C. 

      Sliding gate

    • D. 

      Swinging disc

  • 14. 
    A primary function of the low lever shut off valve is to control the flow of fuel
    • A. 

      At altitudes below 10,000 ft

    • B. 

      While taxiing on the flight line

    • C. 

      Being added to an unpressurized tank

    • D. 

      Being transferred out of a pressurized tank

  • 15. 
    The action used by the low lever shut off valve to prevent the reverse flow of fuel through the valve is
    • A. 

      Spring

    • B. 

      Venturi

    • C. 

      Check valve

    • D. 

      Hydromechanical

  • 16. 
    Malfunctions of a fuel system vent float valve can be caused by
    • A. 

      Over filling the fuel tank

    • B. 

      Operating the valve in a "dry" tank

    • C. 

      Loose electrical connections on the valve

    • D. 

      Rough handling of the valve during installation

  • 17. 
    In a direct current, liquid level fuel indicating system, the wiper contact is positioned on the resistance strip by
    • A. 

      Signals in the amplifier

    • B. 

      The movement of a float in the tanks

    • C. 

      Voltage changes in the indicator circuit

    • D. 

      The amount of bleed air pressure entering the fuel tank

  • 18. 
    The primary purpose of the air pressure regulator in a fuel system is to
    • A. 

      Indicate manifold pressure

    • B. 

      Open the vent valves during a climb or dive

    • C. 

      Actuate a micro switch and turn the air flow light on

    • D. 

      Control the amount of pressure entering the fuel tank

  • 19. 
    Fuel system disconnect couplings are used
    • A. 

      Only in one way systems

    • B. 

      Only in low pressure systems

    • C. 

      To interrrupt the flow of fuel or air and prevent the loss of fluid

    • D. 

      To promote free flow of fuel or air and prevent loss of fluid

  • 20. 
    All of the following aircraft systems use engine bleed air (EBA) except
    • A. 

      Anti-icing

    • B. 

      Rain removal

    • C. 

      Air-conditioning

    • D. 

      Fire extinguishing

  • 21. 
    Aircraft engine temperature and pressure as it applies to the bleed air system is determined by the
    • A. 

      Ambient pressure and ambient temperature

    • B. 

      Engine throttle setting and ambient altitude

    • C. 

      Ambient pressure and engine throttle setting

    • D. 

      Engine throttle setting and ambient temperature

  • 22. 
    Engine bleed air (EBA) check valves are installed to
    • A. 

      Prevent loss of compressed bleed air

    • B. 

      Maintain a balance airflow from each engine

    • C. 

      Provide a primary source for compressed bleed air

    • D. 

      Reduce bleed air pressure when the pressure is too high

  • 23. 
    When installing air-conditioning ducting, the tool used to ensure alignment and sealing is the
    • A. 

      Screwdriver

    • B. 

      Center punch

    • C. 

      Rawhide mallet

    • D. 

      Ball peen hammer

  • 24. 
    When a compressable flange duct end becomes distorted, the corrective action that should be taken is to
    • A. 

      Replace the duct flange

    • B. 

      Use a gasket with the duct ends

    • C. 

      Reposition the duct for a better seal

    • D. 

      Reshape the duct flange end to its original shape

  • 25. 
    Fiberglass fabric duct installations are prevented from swelling when the aircraft climbs ot high altitudes by
    • A. 

      Thermal compensators

    • B. 

      Expansion bellows

    • C. 

      Puckered flaps

    • D. 

      Vent holes

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