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aircraft fuel systems 1
54問 • 1年前
  • Dale Cabanlong
    • 通報

    問題一覧

  • 1

    To prevent vapor lock in fuel lines at high altitude, some aircraft are equipped with:

    Booster pumps

  • 2

    (1) Gas-turbine engine fuel systems are very susceptible to the formation of ice in the fuel filters. (2)A fuel heater operates as a heat exchanger to warm the fuel.

    Both no.1 and no.2 are true

  • 3

    What minimum required markings must be placed on or near each appropriate fuel filler cover on utility category aircraft?

    The word ‘Avgas’ and the minimum fuel grade.

  • 4

    A fuel system must be designed to prevent fuel-vapor ignition caused by:

    lightning

  • 5

    What are the four general types of fuel quantity gauges? 1. Sight glass 2. Mechanical 3. Electrical 4. Electronic 5. Bourdon tube 6. Vane-type transmitter 7. Litmus indicator

    1,2,3,4

  • 6

    Which of the following is employed to maintain lateral stability when jettisoning fuel?

    Two separate independent systems

  • 7

    Flapper valves are used in fuel tanks to:

    act as check valves

  • 8

    A drip gauge may be used to measure

    the amount of fuel in the tank

  • 9

    The use of turbine fuels in aircraft has resulted in some problems not normally associated with aviation gasolines. One of these problem is

    microbial contamination

  • 10

    Entrained water in aviation turbine fuel is a hazard because of its susceptibility to freezing as it passes through the filters. What are common methods of preventing this hazard

    anti-icing fuel additives and fuel heater.

  • 11

    Aircraft defueling should be accomplished

    In the open air for good ventilation.

  • 12

    A fuel temperature indicator is located in the fuel tanks on some turbine-powered airplanes to tell when the fuel may be:

    . In danger of forming ice crystals.

  • 13

    1) A fuel pressure relief valve is required on an aircraft positive-displacement fuel pump. (2) A fuel pressure relief valve is required on an aircraft centrifugal fuel boost pump. Regarding the above statements,

    Only no.1 is true

  • 14

    The electronic-type fuel quantity indicating system consists of a bridge circuit,

    An amplifier, an indicator, and a tank unit.

  • 15

    What precautions must be observed if a gravity-feed fuel system is permitted to supply fuel to an engine form more than one tank at a time?

    The tank airspaces must be interconnected

  • 16

    What is the recommended practice for cleaning a fuel tank before welding?

    Steam clean the tank interior

  • 17

    When installing a rigid fuel line, ½ inch in diameter, at what intervals should the line supported?

    16 inches

  • 18

    How may the antiknock characteristics of a fuel be improved?

    By adding a knock inhibitor.

  • 19

    What type of remote-reading fuel quantity indicating system has several probes installed in each fuel tank?

    Electronic

  • 20

    When moving the mixture control on a normally operating engine into the idle cutoff position, engine RPM should

    Slightly increase before the engine starts to die

  • 21

    Which of the following would be most useful to locate and troubleshoot an internal fuel leak in an aircraft fuel system?

    fuel system schematic

  • 22

    What is the purpose of flapper-type check valves in integral fuel tanks?

    To prevent fuel from flowing away from the boost pumps.

  • 23

    What flight safety-related advantage does a pressure fueling system provide?

    Reduces the chances for fuel contamination.

  • 24

    What type of fuel-booster pump requires a pressure relief valve?

    Sliding vane

  • 25

    fuel totalizer is a component which indicates the

    Amount of fuel in all tanks.

  • 26

    As a general rule, which statement is true regarding fuel leaks

    Stains, seeps, and heavy seeps( in addition to running leaks) are considered flight hazards when located in unvented areas of the aircraft.

  • 27

    The location of leaks and defects within the internal portions of the fuel system can usually be determined by:

    Observing the pressure gauge and operating the selector valves

  • 28

    Integral fuel tanks on transport aircraft are:

    Formed by the aircraft structure

  • 29

    What is the dielectric (nonconducting material) in a capacitance-type fuel quantity indicating system?

    Fuel and air in the tank.

  • 30

    A transducer in a fuel pressure system serves what function?

    Converts fluid pressure directly through a transmitter to the indicator.

  • 31

    Why are integral fuel tanks used in many large aircraft?

    To reduce weight

  • 32

    A capacitance-type fuel quantity indicating system measures fuel in:

    Pounds

  • 33

    a bladder-type fuel tank is to be left empty for an extended period of time, the inside of the tank should be coated with a film of:

    Engine oil

  • 34

    How many vents, arranged so that they are not likely to become plugged at the same time, must be used in multiengine fuel systems?

    Two

  • 35

    A fuel pressure warning switch contacts close and warning light is turned on when:

    The fuel pressure drops below specified limits

  • 36

    Which of the following is necessary to effectively troubleshoot a fuel pressure warning system?

    The manufacturer’s maintenance manuals

  • 37

    When routing a fuel line between two rigidly mounted fittings the line should:

    Have at least one bend between such fittings

  • 38

    When inspecting a fuel system, you should check all valves located downstream of boost pumps with the pumps:

    Operating

  • 39

    An electrical-type fuel quantity indicating system consists of an indicator in the cockpit and a:

    Float-operated transmitter installed in the tank

  • 40

    The vapor pressure of aviation gasoline is:

    Lower than the vapor pressure of automotive gasoline.

  • 41

    What can be done to eliminate or minimize the microbial growth problem in an aircraft jet fuel tank?

    Use anti-icing and antibacterial additives

  • 42

    What is the primary purpose of the crossfeed system?

    To allow the feeding of engine from any tank.

  • 43

    Fuel-boost pumps are operated

    To provide a positive flow of fuel to the engine

  • 44

    One advantage of electrical and electronic fuel quantity indicating systems is that:

    Several fuel tank levels can be read on one indicator.

  • 45

    A probe or a series of probes is used in what kind of fuel quantity indicating system

    Capacitor

  • 46

    A fuel jettison system is required under certain conditions if the maximum takeoff weight exceeds the maximum landing weight. What regulations cover the requirements of fuel jettisoning?

    Federal Aviation Regulation Part 23, 25, and CAM 4b.

  • 47

    In an electronic-type fuel quantity indicating system, the tank sensing unit is a:

    Capacitor

  • 48

    What should be used to remove flux from an aluminum tank after welded repairs?

    5 percent solution of nitric or sulfuric acid

  • 49

    What is the purpose of a float-operated transmitter installed in a fuel tank?

    t sends an electric signal to the fuel quantity indicator

  • 50

    Fuel jettisoning past the limits prescribed by Federal Aviation Regulations is usually prevented by:

    Dump limit valves or a low-level circuit.

  • 51

    The type of fuel-boost pump that separates air and vapor from the fuel before it enters the line to the carburetor is the:

    Centrifugal-type pump.

  • 52

    1) If aviation gasoline vaporizes too readily, fuel lines may become filled with vapor and cause increased fuel flow. (2) A measure of a gasoline’s tendency to vapor lock is obtained from the Reid vapor pressure test. Regarding the above statements,

    Only no. 2 is true

  • 53

    1) On a large aircraft pressure refueling system, a pressure refueling receptacle and control panel will permit one person to fuel or defuel any or all fuel tanks of an aircraft. (2) Because of the fuel tank area, there are more advantages to a pressure fueling system in light aircraft.

    Only no.1 is true

  • 54

    The presence of fuel stains around a fuel nozzle would indicate

    Clogged fuel nozzle

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    問題一覧

  • 1

    To prevent vapor lock in fuel lines at high altitude, some aircraft are equipped with:

    Booster pumps

  • 2

    (1) Gas-turbine engine fuel systems are very susceptible to the formation of ice in the fuel filters. (2)A fuel heater operates as a heat exchanger to warm the fuel.

    Both no.1 and no.2 are true

  • 3

    What minimum required markings must be placed on or near each appropriate fuel filler cover on utility category aircraft?

    The word ‘Avgas’ and the minimum fuel grade.

  • 4

    A fuel system must be designed to prevent fuel-vapor ignition caused by:

    lightning

  • 5

    What are the four general types of fuel quantity gauges? 1. Sight glass 2. Mechanical 3. Electrical 4. Electronic 5. Bourdon tube 6. Vane-type transmitter 7. Litmus indicator

    1,2,3,4

  • 6

    Which of the following is employed to maintain lateral stability when jettisoning fuel?

    Two separate independent systems

  • 7

    Flapper valves are used in fuel tanks to:

    act as check valves

  • 8

    A drip gauge may be used to measure

    the amount of fuel in the tank

  • 9

    The use of turbine fuels in aircraft has resulted in some problems not normally associated with aviation gasolines. One of these problem is

    microbial contamination

  • 10

    Entrained water in aviation turbine fuel is a hazard because of its susceptibility to freezing as it passes through the filters. What are common methods of preventing this hazard

    anti-icing fuel additives and fuel heater.

  • 11

    Aircraft defueling should be accomplished

    In the open air for good ventilation.

  • 12

    A fuel temperature indicator is located in the fuel tanks on some turbine-powered airplanes to tell when the fuel may be:

    . In danger of forming ice crystals.

  • 13

    1) A fuel pressure relief valve is required on an aircraft positive-displacement fuel pump. (2) A fuel pressure relief valve is required on an aircraft centrifugal fuel boost pump. Regarding the above statements,

    Only no.1 is true

  • 14

    The electronic-type fuel quantity indicating system consists of a bridge circuit,

    An amplifier, an indicator, and a tank unit.

  • 15

    What precautions must be observed if a gravity-feed fuel system is permitted to supply fuel to an engine form more than one tank at a time?

    The tank airspaces must be interconnected

  • 16

    What is the recommended practice for cleaning a fuel tank before welding?

    Steam clean the tank interior

  • 17

    When installing a rigid fuel line, ½ inch in diameter, at what intervals should the line supported?

    16 inches

  • 18

    How may the antiknock characteristics of a fuel be improved?

    By adding a knock inhibitor.

  • 19

    What type of remote-reading fuel quantity indicating system has several probes installed in each fuel tank?

    Electronic

  • 20

    When moving the mixture control on a normally operating engine into the idle cutoff position, engine RPM should

    Slightly increase before the engine starts to die

  • 21

    Which of the following would be most useful to locate and troubleshoot an internal fuel leak in an aircraft fuel system?

    fuel system schematic

  • 22

    What is the purpose of flapper-type check valves in integral fuel tanks?

    To prevent fuel from flowing away from the boost pumps.

  • 23

    What flight safety-related advantage does a pressure fueling system provide?

    Reduces the chances for fuel contamination.

  • 24

    What type of fuel-booster pump requires a pressure relief valve?

    Sliding vane

  • 25

    fuel totalizer is a component which indicates the

    Amount of fuel in all tanks.

  • 26

    As a general rule, which statement is true regarding fuel leaks

    Stains, seeps, and heavy seeps( in addition to running leaks) are considered flight hazards when located in unvented areas of the aircraft.

  • 27

    The location of leaks and defects within the internal portions of the fuel system can usually be determined by:

    Observing the pressure gauge and operating the selector valves

  • 28

    Integral fuel tanks on transport aircraft are:

    Formed by the aircraft structure

  • 29

    What is the dielectric (nonconducting material) in a capacitance-type fuel quantity indicating system?

    Fuel and air in the tank.

  • 30

    A transducer in a fuel pressure system serves what function?

    Converts fluid pressure directly through a transmitter to the indicator.

  • 31

    Why are integral fuel tanks used in many large aircraft?

    To reduce weight

  • 32

    A capacitance-type fuel quantity indicating system measures fuel in:

    Pounds

  • 33

    a bladder-type fuel tank is to be left empty for an extended period of time, the inside of the tank should be coated with a film of:

    Engine oil

  • 34

    How many vents, arranged so that they are not likely to become plugged at the same time, must be used in multiengine fuel systems?

    Two

  • 35

    A fuel pressure warning switch contacts close and warning light is turned on when:

    The fuel pressure drops below specified limits

  • 36

    Which of the following is necessary to effectively troubleshoot a fuel pressure warning system?

    The manufacturer’s maintenance manuals

  • 37

    When routing a fuel line between two rigidly mounted fittings the line should:

    Have at least one bend between such fittings

  • 38

    When inspecting a fuel system, you should check all valves located downstream of boost pumps with the pumps:

    Operating

  • 39

    An electrical-type fuel quantity indicating system consists of an indicator in the cockpit and a:

    Float-operated transmitter installed in the tank

  • 40

    The vapor pressure of aviation gasoline is:

    Lower than the vapor pressure of automotive gasoline.

  • 41

    What can be done to eliminate or minimize the microbial growth problem in an aircraft jet fuel tank?

    Use anti-icing and antibacterial additives

  • 42

    What is the primary purpose of the crossfeed system?

    To allow the feeding of engine from any tank.

  • 43

    Fuel-boost pumps are operated

    To provide a positive flow of fuel to the engine

  • 44

    One advantage of electrical and electronic fuel quantity indicating systems is that:

    Several fuel tank levels can be read on one indicator.

  • 45

    A probe or a series of probes is used in what kind of fuel quantity indicating system

    Capacitor

  • 46

    A fuel jettison system is required under certain conditions if the maximum takeoff weight exceeds the maximum landing weight. What regulations cover the requirements of fuel jettisoning?

    Federal Aviation Regulation Part 23, 25, and CAM 4b.

  • 47

    In an electronic-type fuel quantity indicating system, the tank sensing unit is a:

    Capacitor

  • 48

    What should be used to remove flux from an aluminum tank after welded repairs?

    5 percent solution of nitric or sulfuric acid

  • 49

    What is the purpose of a float-operated transmitter installed in a fuel tank?

    t sends an electric signal to the fuel quantity indicator

  • 50

    Fuel jettisoning past the limits prescribed by Federal Aviation Regulations is usually prevented by:

    Dump limit valves or a low-level circuit.

  • 51

    The type of fuel-boost pump that separates air and vapor from the fuel before it enters the line to the carburetor is the:

    Centrifugal-type pump.

  • 52

    1) If aviation gasoline vaporizes too readily, fuel lines may become filled with vapor and cause increased fuel flow. (2) A measure of a gasoline’s tendency to vapor lock is obtained from the Reid vapor pressure test. Regarding the above statements,

    Only no. 2 is true

  • 53

    1) On a large aircraft pressure refueling system, a pressure refueling receptacle and control panel will permit one person to fuel or defuel any or all fuel tanks of an aircraft. (2) Because of the fuel tank area, there are more advantages to a pressure fueling system in light aircraft.

    Only no.1 is true

  • 54

    The presence of fuel stains around a fuel nozzle would indicate

    Clogged fuel nozzle