2A533A Vol. 4 Part 1

50 Questions | Attempts: 196
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2A533A Vol. 4 Part 1 - Quiz

Preperation quiz for comm/nav mission systems journeyman.


Questions and Answers
  • 1. 
    What is the purpose of the very-high frequency omnirange system?
    • A. 

      Determine up/down guidance

    • B. 

      Determine left/right guidance

    • C. 

      Determine bearing to a station

  • 2. 
    The basic operating principle of very-high frequency omnirange is phase comparing the
    • A. 

      30-Hz ref and 9960-Hz FM signals

    • B. 

      30-Hz ref and 30-Hz variable

    • C. 

      30-hz var and 9960-Hz FM signals

  • 3. 
    If the magnetic bearing to a very-high frequency omnirange station is 225degrees, the pahse difference between the 30-Hz ref and 30-Hz variable is
    • A. 

      15 degrees

    • B. 

      45 degrees

    • C. 

      135 degrees

  • 4. 
    Very-high frequency omnirange aural (station I.D.) signals are transmitted
    • A. 

      Continuously

    • B. 

      At 20 second intervals

    • C. 

      At 30 second intervals

  • 5. 
    The instrument landing system localizer course width at a distance of 10 miles from the transmitter is normally
    • A. 

      5 degrees

    • B. 

      2.5 degrees

    • C. 

      0.7 degrees

  • 6. 
    What frequency band is used to transmit instrument landing system glide slope information?
    • A. 

      Low-frequency

    • B. 

      High frequency

    • C. 

      Ultra-high frequency

  • 7. 
    The instrument landing system marker-beacon carrier frequency is
    • A. 

      68.1 Mhz

    • B. 

      75 Khz

    • C. 

      75 Mhz

  • 8. 
    What microwave landing system outputs are provided to the pilots an co-pilots horizontal situation and attitude director indicators for approach and take off?
    • A. 

      Azimuth signals

    • B. 

      Elevation signals

    • C. 

      Steering indications

  • 9. 
    What is not a microwave landing system output?
    • A. 

      Glideslope deviation

    • B. 

      Azimuth warning flag

    • C. 

      Glideslope correction flag

  • 10. 
    On how many channels are the microwave landing system recievers capable of operating?
    • A. 

      200

    • B. 

      500

    • C. 

      559

  • 11. 
    What is the frequency range of the microwave landing system recievers?
    • A. 

      500-669 Mhz

    • B. 

      669-5031 Mhz

    • C. 

      5031-5091 Mhz

  • 12. 
    Which antennas are shared by microwave landing system numbers 1 and 2?
    • A. 

      1 + 3

    • B. 

      3 + 2

    • C. 

      3 + 4

  • 13. 
    Which microwave landing system component allows for selection of system status?
    • A. 

      Reciever power on relay

    • B. 

      Flight director mode selector

    • C. 

      Integrated display computer unit

  • 14. 
    When an instrument landing system frequency is sleected, the arn-127 very-high frequency omnirange receiver parks the horizontal situations indicator bearing pointer at the
    • A. 

      3' o'clock position

    • B. 

      4' o'clock position

    • C. 

      6' o'clock position

  • 15. 
    Which radial will the aircraft be positioned on if the aircraft is located north of the very-high frequency omnirange station?
    • A. 

      180 degrees

    • B. 

      090 degrees

    • C. 

      000 degrees

  • 16. 
    To get a FROM flag in view on the horizontal situation indicator when the magnetic bearing to the very-high frequency omnirange station is 75 degreees, the selected course should be manually set to
    • A. 

      75 degrees

    • B. 

      150 degrees

    • C. 

      210 degrees

  • 17. 
    During instrument landing system operation, a full-scale deflection of the horizontial situation indicator vertical needle indicates the aircrafat is off course from the runway centerline by
    • A. 

      400 ft

    • B. 

      0.6 degrees

    • C. 

      2.5 degrees

  • 18. 
    In instrument landing system operation, a deflection of tow dots on the attitude director indicator glide slope deviatioin scale indicates the aircraft is
    • A. 

      0.25 degrees off glide path

    • B. 

      2.5 degrees of glide path

    • C. 

      0.6 degrees of glide path

  • 19. 
    When the instrument landing system marker becon amber (orange) lamp illumintes the pilot hears a
    • A. 

      3000 Hz tone

    • B. 

      1000 Hz tone

    • C. 

      1300 Hz tone

  • 20. 
    The total number of very-high frequency omnirange/instrument landing system (vor/ils) channels that can be selected by thte AN/ARN-147 vor/ils control box is
    • A. 

      40

    • B. 

      160

    • C. 

      200

  • 21. 
    If the very-high frequency omnirange station signal is lost or the reciever malfunctions, the arn-147 system parks the bearing pointer at the
    • A. 

      3 o'clock position

    • B. 

      6 o'clock position

    • C. 

      9 o'clock position

  • 22. 
    In very-high frequencyt omnirange (vor) mode, what information is sent to the horizontal situation indicator by the arn-147 vor/localizer reciever?
    • A. 

      Relative bearing, flag alarm, and heading

    • B. 

      Flag alarm, distance, and left/right deviation

    • C. 

      Left/right deviation, flag alarm, and to/from

  • 23. 
    What glide slope infromation is provide to the attitude director indicator when the an/arn-127 is operatin in the instrument landing system mode?
    • A. 

      Audio signals

    • B. 

      Navigation signals

    • C. 

      Up/down deviations

  • 24. 
    The main reference burst is transmitted when the main lobe of the tactical air navigation surface beacon radiation patter is due
    • A. 

      North

    • B. 

      South

    • C. 

      East

  • 25. 
    A taactical air navigation surfac beacon provides a station identification code (beacon identity tone) every
    • A. 

      7.5 seconds

    • B. 

      20 seconds

    • C. 

      30 seconds

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