2A553B Vol. 4 Pretest

82 Questions | Total Attempts: 388

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CDC Quizzes & Trivia

Pretest for CDC 2A553B Upgrade.


Questions and Answers
  • 1. 
    (601) Near the equator, the lines of magnetic force are...
    • A. 

      Perpendicular to the Earth's surface.

    • B. 

      Parallel to the Coriolis field.

    • C. 

      Parallel to the Earth's surface.

    • D. 

      Perpendicular to the Coriolis field.

  • 2. 
    (601) Which magnetic compass error occurs due to magnetism within the aircraft?
    • A. 

      Interference.

    • B. 

      Vibration.

    • C. 

      Deviation.

    • D. 

      Variation.

  • 3. 
    (601) The magnitude of the Coriolis error signal depends on the aircraft speed, aircraft heading,...
    • A. 

      Rotation of the Earth, and geographic longitude.

    • B. 

      Rotation of the Earth, and geographic latitude.

    • C. 

      Aircraft attitude, and geographic longitude.

    • D. 

      Aircraft attitude, and geographic latitude.

  • 4. 
    (601) Neutralizing or weakening the permanent magnetic field that exists around an aircraft is called...
    • A. 

      Demoding.

    • B. 

      Despoiling.

    • C. 

      Defoliating.

    • D. 

      Degaussing.

  • 5. 
    (601) Any misalignment between the magnetic azimuth detector and the longitudinal axis of the aircraft creates...
    • A. 

      A Coriolis effect error.

    • B. 

      A transmission error.

    • C. 

      A hard iron error.

    • D. 

      An index erro.

  • 6. 
    (602) With an input frequency of 400 Hz, what is the frequency of the magnetic azimuth detector output?
    • A. 

      60 Hz.

    • B. 

      200 Hz.

    • C. 

      400 Hz.

    • D. 

      800 Hz.

  • 7. 
    (602) What is used to develop the single-cycle error compensation signal in the attitude heading reference system?
    • A. 

      Synchros.

    • B. 

      Resolvers.

    • C. 

      Differentials.

    • D. 

      Variable resistors.

  • 8. 
    (602) What type of gyros are used in the attitude heading reference system?
    • A. 

      Two vertical gyros.

    • B. 

      Two directional gyros.

    • C. 

      One vertical and one directional gyro.

    • D. 

      One horizontal and one directional gyro.

  • 9. 
    (602) The source of the erection signal for the VG pitch gimbal of the attitude heading reference system is...
    • A. 

      A fluid type sensor.

    • B. 

      The light erection sensor.

    • C. 

      The VG pitch gimbal synchro.

    • D. 

      The directional gyroscope pitch gimbal synchro.

  • 10. 
    (602) The attitude heading reference system DG pitch gimbal is aligned with and continuously follows the...
    • A. 

      VG pitch gimbal.

    • B. 

      VG inner roll gimbal.

    • C. 

      DG leveling gimbal.

    • D. 

      DG leveling sensor.

  • 11. 
    (603) The attitude heading reference system requires input power consisting of 115VAC, 400 Hz, 3-phase aircraft power, and...
    • A. 

      26VAC, 60 Hz, single-phase power for excitation.

    • B. 

      26VDC, 60 Hz, single-phase power for excitation.

    • C. 

      26VAC, 400 Hz, single-phase power for excitation.

    • D. 

      26VDC, 400 Hz, single-phase power for excitation.

  • 12. 
    (603) The AHRS cuts off slaving of the AHRS to magnetic heading when a fore-aft acceleration of...
    • A. 

      1.736-g or a turn rate of 8 degrees per minute is exceeded.

    • B. 

      1.736-g or a turn rate of 5 degrees per minute is exceeded.

    • C. 

      0.055-g or a turn rate of 8 degrees per minute is exceeded.

    • D. 

      0.055-g or a turn rate of 5 degrees per minute is exceeded.

  • 13. 
    (603) The three attitude heading reference system heading modes of operation are slave,...
    • A. 

      DG, and compass.

    • B. 

      Coriolis, and compass.

    • C. 

      Coriolis, and azimuth.

    • D. 

      DG, and azimuth.

  • 14. 
    (604) The MC-2000 electronics group consists of a control console, magnetic field monitor,...
    • A. 

      Turntable, and compass adapter box.

    • B. 

      Tripods, and compass adapter box.

    • C. 

      Turntable, and alignment tool kit.

    • D. 

      Tripods, and alignment tool kit.

  • 15. 
    (604) The serial number on the MC-2000 electronics group control console must match the serial number on the...
    • A. 

      Cable.

    • B. 

      Turntable.

    • C. 

      Compass adapter box.

    • D. 

      Magnetic field monitor.

  • 16. 
    (604) The telescope on the magnetic field monitor is...
    • A. 

      40-power and rotates 270 degrees.

    • B. 

      40-power and rotates 360 degrees.

    • C. 

      22-power and rotates 270 degrees.

    • D. 

      22-power and rotates 360 degrees.

  • 17. 
    (604) What is used only during the field certification and calibration check?
    • A. 

      Compass rose adapter box swing assembly.

    • B. 

      Magnetic azimuth reference detector.

    • C. 

      Magnetic field monitor.

    • D. 

      Control console.

  • 18. 
    (605) The navigation function is accomplished primarily through the sensing element and measurement of...
    • A. 

      Magnetic north.

    • B. 

      Earth rotation.

    • C. 

      Acceleration.

    • D. 

      Gravity.

  • 19. 
    (605) The inertial navigation system operates as a self-contained system, but can be updated by...
    • A. 

      VOR/ILS, STS, or manually.

    • B. 

      TACAN, SKE, or manually.

    • C. 

      VOR/ILS, SKE, or manually.

    • D. 

      TACAN, STS, or manually.

  • 20. 
    (606) Which INS unit serves as the communication link between the pilot and the INU digital computer?
    • A. 

      Mode selector unit.

    • B. 

      Control display unit.

    • C. 

      Co-pilot's control unit.

    • D. 

      Navigator's selector panel.

  • 21. 
    (606) Which INS control display unit light illuminates approximately two minutes before reaching a waypoint during flight?
    • A. 

      BAT.

    • B. 

      PWR.

    • C. 

      WARN.

    • D. 

      ALERT.

  • 22. 
    (606) Which INS control display unit right-hand data display digits display an action code when there is a system failure?
    • A. 

      1 and 2.

    • B. 

      2 and 3.

    • C. 

      1 and 4.

    • D. 

      2 and 4.

  • 23. 
    (606) Which INS submode enables aided inertial operation using TACAN data?
    • A. 

      0.

    • B. 

      2.

    • C. 

      4.

    • D. 

      5.

  • 24. 
    (606) Which light indicates and operator error or out-of-tolerance condition in the INS computer?
    • A. 

      BAT.

    • B. 

      PWR.

    • C. 

      WARN.

    • D. 

      ALERT.

  • 25. 
    (606) What is the maximum time a fully charged battery unit can sustain INS operation?
    • A. 

      15 minutes.

    • B. 

      30 minutes.

    • C. 

      1.5 hours.

    • D. 

      2.0 hours.

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