2A553B Vol. 4 Pretest

82 Questions | By Kotadod | Last updated: Mar 21, 2022 | Total Attempts: 388

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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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