2A553B Vol. 4 Pretest
Pretest for CDC 2A553B Upgrade.
- 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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