3D156 Vol 2 : Airfield Systems Trivia Questions! Quiz

97 Questions | Total Attempts: 216

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3D156 Vol 2 : Airfield Systems Trivia Questions! Quiz

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Questions and Answers
  • 1. 
    The localizer equipment shelter is generally painted what colors?    
    • A. 

      International orange and white

    • B. 

      Olive drab and black

    • C. 

      Brown and tan

    • D. 

      Red and white

  • 2. 
    Approximately how many feet is the localizer equipment shelter offset from the center of the localizer array?
    • A. 

      100

    • B. 

      200

    • C. 

      350

    • D. 

      500

  • 3. 
    How can the localizer station be controlled?
    • A. 

      Local only

    • B. 

      Remote only

    • C. 

      Locally from the site or remotely from the control tower or radar approach control (RAPCON)

    • D. 

      Remotely from the site or locally from the control tower of RAPCON

  • 4. 
    How many channels do the radios in the localizer equipment station have?    
    • A. 

      One

    • B. 

      Two

    • C. 

      Three

    • D. 

      Four

  • 5. 
    In megahertz (MHz), the frequency range of the transmitters in the localizer equipment station is 
    • A. 

      108 to 112

    • B. 

      324 to 336

    • C. 

      962 to 1,213

    • D. 

      2,250 to 2,259

  • 6. 
    What is the nominal carrier plus sideband (CSB) watt (W) output power of the course transmitter in the localizer?
    • A. 

      10

    • B. 

      15

    • C. 

      20

    • D. 

      25

  • 7. 
    What is the nominal carrier plus sideband (CSB) watt (W) output power of the clearance transmitter in the localizer?
    • A. 

      10

    • B. 

      15

    • C. 

      20

    • D. 

      25

  • 8. 
    In the localizer, what frequency, in kilohertz (kHz), is the course (CRS) carrier transmitted?    
    • A. 

      Station assigned frequency (SAF) + 4.00

    • B. 

      SAF +4.75

    • C. 

      SAF -4.00

    • D. 

      SAF -4.75

  • 9. 
    In the localizer, what frequency, in kilohertz (kHz), is the clearance (CLR) carrier transmitted? 
    • A. 

      Station assigned frequency (SAF) + 4.75

    • B. 

      SAF+4.00

    • C. 

      SAF -4.75

    • D. 

      SAF -4.00

  • 10. 
    The hertz (Hz) frequency of the coded tone to provide the station identification (ID) is    
    • A. 

      770

    • B. 

      1,020

    • C. 

      1,410

    • D. 

      2,250

  • 11. 
    Which parameter is not checked by the localizer course monitors?    
    • A. 

      Course width

    • B. 

      Frequency difference

    • C. 

      Radio frequency (RF) level

    • D. 

      Identification (ID) percent modulation

  • 12. 
    How many monitors must detect a fault to cause an equipment transfer in the localizer?    
    • A. 

      One

    • B. 

      Two

    • C. 

      Three

    • D. 

      Four

  • 13. 
    What controls the localizer clearance (CLR) transmitters?    
    • A. 

      Control unit

    • B. 

      Changeover unit

    • C. 

      Clearance monitors

    • D. 

      Course transmitters

  • 14. 
    In watts (W) and milliwatts (mW) respectively, what is the nominal localizer course transmitter carrier-plus sideband (CSB) and sideband only (SBO) power?
    • A. 

      15,360

    • B. 

      10,300

    • C. 

      5,190

    • D. 

      3,190

  • 15. 
    Which unit of the localizer course transmitter provides a means of suppressing the carrier in the sideband only (SBO)?
    • A. 

      Exciter

    • B. 

      Modulator assembly

    • C. 

      Identification keyer

    • D. 

      Diode-switching network

  • 16. 
    What is the nominal clearance sideband only (SBO) milliwatt (mW) power in the localizer?    
    • A. 

      180

    • B. 

      300

    • C. 

      360

    • D. 

      450

  • 17. 
    From where does the 90/150 hertz (Hz) control assembly in the clearance transmitter receive its 90- and 150-Hz signals?
    • A. 

      Changeover unit

    • B. 

      Local control unit

    • C. 

      Course transmitter

    • D. 

      Clearance monitor

  • 18. 
    The left antennas at the localizer are fed sideband only (SBO) signals that is at what degrees out of phase compared to the SBO fed to the right antenna?
    • A. 

      0

    • B. 

      90

    • C. 

      180

    • D. 

      270

  • 19. 
     Localizer clearance carrier-plus sideband (CSB) and sideband only (SBO)signals are fed to which antennas?
    • A. 

      Pairs 1-5

    • B. 

      Pairs 3-6

    • C. 

      Inner four pairs

    • D. 

      All antennas

  • 20. 
    When might a single frequency localizer be installed?
    • A. 

      When the localizer is installed on a category I airfield.

    • B. 

      When the localizer is installed on a category III airfield.

    • C. 

      When a dual-frequency localizer would cause interference.

    • D. 

      When the forward terrain is free of major obstructions and terrain problems.

  • 21. 
    In a single-frequency localizer using 8 antennas, what is the sideband only (SBO) and carrier-plus sideband (CSB) phase relationship between the two antennas of each pair?
    • A. 

      SBO is in phase; CSB is in phase

    • B. 

      SBO is in phase; CSB is 180° of phase

    • C. 

      SBO is 180° out of phase; CSB is in phase

    • D. 

      SBO is 180° out of phase; CSB is 180° out of phase.

  • 22. 
    What will most likely happen if an antenna cable is broken or shorted, it will cause    
    • A. 

      An abnormal indication

    • B. 

      A transmitter changeover

    • C. 

      A cable fault alarm

    • D. 

      Station shutdown

  • 23. 
    Which parameter is not checked by the localizer course monitors?    
    • A. 

      Frequency separation

    • B. 

      Radio frequency (RF) level

    • C. 

      Identification (ID) percent modulation

    • D. 

      Width difference in depth of modulation (DDM)

  • 24. 
    What is the kilohertz (kHz) frequency of the clock pulse generated by the timing assembly in a localizer course monitor?
    • A. 

      460.8

    • B. 

      500.8

    • C. 

      512.4

    • D. 

      602.5

  • 25. 
    Which monitor assembly displays the measured parameters?    
    • A. 

      Signal processor

    • B. 

      Digital readout

    • C. 

      Measurement

    • D. 

      Timing

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