737 Fuel

15 Questions | Total Attempts: 410

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Aircraft Quizzes & Trivia

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Questions and Answers
  • 1. 
    Center fuel tank fuel is used before main tank fuel because:
    • A. 

      Center tank check valves open at a lower differential pressure than main tank check valves.

    • B. 

      Center tank check valves open at a higher differential pressure than main tank check valves.

    • C. 

      Center tank fuel pumps produce higher pressure than main tank pumps.

    • D. 

      Main tank pumps cannot produce pressure until the center tank LOW PRESSURE lights illuminate and center tank pumps are turned OFF.

  • 2. 
    The Engine Fuel Shutoff valve:
    • A. 

      Is controlled by both the Engine Fire Warning switch and the Engine Start Lever; however, the spar fuel shutoff valve is controlled only by the Engine Start Lever.

    • B. 

      Is the only fuel shutoff with an associated blue light on the forward overhead fuel panel.

    • C. 

      And the spar fuel shutoff valve requires AC power to operate.

    • D. 

      And the spar fuel shutoff valves close whenever their respective Engine Fire Warning switch is pulled or Engine Start Lever is placed to CUTOFF.

  • 3. 
    The center tank scavenge jet pump operates when:
    • A. 

      Both Center Tank Fuel Pump switches are turned off.

    • B. 

      The No. 1 main fuel tank is about 1/2 full and the main tank No. 1 forward pump is operating.

    • C. 

      The center fuel tank is about 3/4 full.

    • D. 

      Either engine is operating.

  • 4. 
    Overwing fueling receptacles exist for both main tanks.
    • A. 

      True

    • B. 

      False

  • 5. 
    The capacity of the center fuel tank is greater than the capacity of the two main fuel tanks combined.
    • A. 

      True

    • B. 

      False

  • 6. 
    There are CDS fuel alert indications for:
    • A. 

      Fuel quantity low in the main tank, impending fuel filter bypass, excessive fuel flow difference between engines.

    • B. 

      Fuel quantity low in the main tank, both center tank fuel pumps producing low or no pressure with fuel in the center tank, excessive fuel quantity difference between main tanks.

    • C. 

      Fuel quantity low in center or main tank, either center tank fuel pump producing low or no pressure with fuel in center tank, excessive fuel flow difference between engines.

    • D. 

      Any fuel pump producing low or no pressure with the pump switch on, impending fuel filter bypass, excessive fuel quantity difference between main tanks.

  • 7. 
    During the cruise, both center tank fuel pumps have failed. You still have 700 lbs (320 kg.) of fuel in the center tank and both main tanks are full. The Upper Display Unit will show:
    • A. 

      A LOW indication.

    • B. 

      A CONFIG indication.

    • C. 

      A pump LOW PFESSURE indication.

    • D. 

      None of the above.

  • 8. 
    You have 5,500 lbs. (2500 kg.), of fuel in the No. 1 main tank and 6750 lbs. (3060 kgs), of fuel in the No. 2 main tank. You will see:
    • A. 

      A LOW indication below main tank No. 1 accompanied by a Master Caution light and system annunciation for fuel.

    • B. 

      An IMBAL indication below main tank No. 1 accompanied by a Master Caution light and system annunciation for fuel.

    • C. 

      An IMBAL indication below main tank No. 1 with no Master Caution light and no system annunciation for fuel.

    • D. 

      The fuel quantity arc and digits on main tank No. 2 turn amber.

  • 9. 
    Inflight, two fuel pumps LOW-PRESSURE lights for the No. 1 tank illuminate. What happens to the No. 1 engine?
    • A. 

      It receives fuel from the No. 2 tank automatically.

    • B. 

      It will shut down due to fuel starvation.

    • C. 

      It receives fuel from the No. 1 tank through the fuel pump bypass valve.

    • D. 

      It continues to operate using fuel through the center tank bypass valve.

  • 10. 
    For landing, what is the maximum fuel imbalance between No. 1 and No. 2 main tanks?
    • A. 

      1000 lbs. (453 Kgs.).

    • B. 

      1100 lbs. (500 kgs.).

    • C. 

      1300 lbs. (590 kgs.).

    • D. 

      1500 lbs. (680 kgs.).

  • 11. 
    In which fuel tanks are bypass valves located?
    • A. 

      Center tank.

    • B. 

      Both main tanks.

    • C. 

      All tanks.

    • D. 

      None.

  • 12. 
    What does an illuminated main tank fuel pump LOW-PRESSURE light indicate?
    • A. 

      Low fuel pressure in the affected tank.

    • B. 

      Low pressure in the fuel manifold.

    • C. 

      Low fuel pump output pressure.

    • D. 

      The fuel pump switch is OFF.

    • E. 

      Both c and d are correct.

  • 13. 
    What is the condition of the VALVE OPEN light when the crossfeed selector is positioned OPEN and the crossfeed valve is closed?
    • A. 

      Illuminated dim blue.

    • B. 

      Illuminated bright blue.

    • C. 

      Illuminated amber.

    • D. 

      Extinguished.

  • 14. 
    What is the source of electrical power for the engine fuel shutoff valves?
    • A. 

      The Hot Battery Bus.

    • B. 

      The Battery Bus.

    • C. 

      The DC Standby bus.

    • D. 

      The AC Standby Bus.

  • 15. 
    Fuel for the APU is normally supplied from the:
    • A. 

      Left side of the fuel manifold.

    • B. 

      No. 2 main tank.

    • C. 

      Center tank.

    • D. 

      Aux tank