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CPL Test Series
Question Bank
Questions for KW INST COMPASS
Answer the following questions
Test Mode
Training Mode
1. When landing on a northerly heading a direct reading magnetic compass will indicate?
No turn.
A westerly turn.
Rapidly Increasing oscillations.
An easterly turn.
2. Upon landing on a northerly heading a DRMC will indicate?
A turn to the east.
No turn
A turn to the west.
Oscillations about north.
3. If the ADF pointer indicates 200 degrees when the RMI rose is stuck at 090 degrees, what is the relative bearing of the beacon?
180 degrees.
110 degrees.
290 degrees.
It cannot be determined from this information.
4. From what does the flux valve in a RIMC get its power supply ?
It does not require one because it is made of perm-alloy material.
AC busbar
Internal self-exciter system
DC busbar
5. If an aircraft in the northern hemisphere accelerates on a westerly heading, the compass needle moves ....... indicating a turn to the ......... ?
Anti-Clockwise south
Clockwise north
Clockwise south.
Anti-Clockwise north
6. What is the strength of the H component of the earths magnetic field (in micro teslas) at the North pole?
1
10
16
23
7. When turning from SE to SW at 50 degrees north, the roll out should occur at?
210 degrees.
245 degrees.
180 degrees.
225 degrees.
8. How can deviation be determined using a magnetic compass?
By referring to the compass card.
By reference to a map of isoclinal lines.
By reference to a compass deviation card.
By reference to a map of isogonal lines.
9. At what point on the earth would earth rate wander and transport wander be zero?
Equator.
South pole.
45 degrees north and south.
North pole.
10. The roll out must be performed at ........ when turning from SW to SE in the northern hemisphere?
145 degrees.
115 degrees.
135 degrees.
160 degrees.
11. Magnetic heading can be found from true heading using?
A compass and compass callbration chart.
A compass and deviation card.
A compass and a map showing isoclinal lines.
A compass and a map showing isogonal lines.
12. If the ADF pointer indicates 120 degrees when the RMI rose is stuck at 080 degrees, what is the relative bearing of the beacon?
40 degrees.
80 degrees.
200 degrees.
It cannot be determined from this information.
13. A perfectly frictionless DI is corrected to give zero drift at 30 degrees north, and its DI is set to indicate 100 degrees. If it remains stationary on the ground for 1 hour what will the indication be?
75 degrees.
92.5 degrees.
107.5 degrees.
100 degrees.
14. What will the compass indicate as an aircraft lands and decelerates on a westerly heading on the magnetic equator?
Turn to south.
Turn to west.
No turn
Oscillations.
15. When taking-off on a calm day on heading of 45° in the northern hemisphere, the compass will indicate ........ If the field is on an agonic line?
More than 45°
45°
45° only if the wings are level.
Less than 45°
16. What will a DRMC indicate when taking -off on a runway with QDM 045 in the southern hemisphere?
Oscillations.
Turn South.
Turn North.
No Turn.
17. The flux valve in a RIMC requires?
AC and DC power supply.
AC power supply
DC power supply
No external power supply.
18. The roll out must be performed at .... when turning from NW to NE in the southern hemisphere?
045 degrees.
025 degrees.
055 degrees.
035 degrees.
19. In the northern hemisphere, the direct reading compass card of an aircraft decelerating on an easterly heading will turn ....... and will ....... ?
Clockwise overhead.
Anti- clockwise under read.
Clockwise under read.
Anti-clockwise over read.
20. If the ADF pointer indicates 240 degrees when the RMI rose is stuck at 090 degrees, what is the relative bearing of the beacon?
It cannot be determined from this information.
zero degrees.
150 degrees
180 degrees.
21. What is the maximum drift error that can be sensed by an uncompensated DGI?
10 degrees per hour.
15 degrees per hour.
5 degrees per hour.
20 degrees per hour.
22. When landing in a southerly direction a direct reading magnetic compass will indicate?
Rapidly increasing oscillations.
Easterly turn.
Westerly turn
No turn.
23. From what does a gyro magnetic compass torque motor obtain its information?
Rotor gimbal tilt unit.
Flux valve
Amplifier.
Error detector.
24. In a remote indicating magnetic compass the flux valve?
Uses an AC power supply.
Uses a DC power supply
Is manufactured from perm - alloy steel.
Requires no power supply because it uses its own self-exciter unit...
25. Earth rotation at 45 degrees north will cause the spin axis of a directional gyro to move?
10.6 degrees clockwise.
10.6 degrees anti-clockwise.
7.6 degrees clockwise.
6.7 degreesanti-clockwise.
26. The function of the torque motor in a gyro stabilised magnetic compass is to?
Precess the directional gyro
Move the selsyn stators
Receive the input from the flux valve.
Move the heading pointer.
27. If the ADF pointer indicates 270 degrees when the RMI rose is stuck at 090 degrees, what is the relative bearing of the beacon?
It cannot be determined from this information.
110 degrees
290 degrees.
180 degrees.
28. A direct reading magnetic compass will be affected by?
Aluminium.
Soft Iron effect hard iron, and hard iron.
Soft iron.
Hard iron.
29. What are the errors in a DGI? 1. Transport wander. 2. Earth rate. 3. Heading errors when banking and pitching. 4. Mechanical imperfections
1, 2, 3.
All of the above
1, 2, 4.
2, 3, 4.
30. The purpose of a compass swing is to?
Align compass north with true north.
Draw up a compass correction card.
Align compass north with magnetic north.
Align true north with the lubber line.
31. A runway In the northern hemisphere is on an agonic line and heading 045 degrees. If an aircraft with zero compass deviation takes off in still air, what will the northerly turning errors be?
The compass will move to less than 045.
If the wings remain level the compass will remain on 045.
The compass will remain on 045
The compass will move to more than 045.
32. The output of the flux valve is fed to the?
Feed back loop.
Compass card.
Error detector.
Amplifier.
33. The purpose of the torque motor in a gyro stabilised magnetic compass is to?
Precess the directional gyro.
Adjust the selsyn stator.
Calibrate the pointer.
Convert flux valve electrical output into pointer movement.
34. The maximum gyro drift rate due to earth rate is?
15 degrees per hour.
5 degrees per hour
90 degrees per hour.
180 degrees per hour.
35. The purpose of a compass swing is to?
Align compass north with magnetic north.
Align compass north with true north.
Align the lubber lines with true north.
Confirm the accuracy of the schuler tuning.
36. When turning right through 90 degrees to north, in the northern hemisphere, roll out should be conducted on a heading of?
330 degrees.
350 degrees.
10 degrees.
20 degrees.
37. If the ADF pointer indicates 270 degrees when the RMI rose is stuck at 075 degrees, what is the relative bearing of the beacon?
It cannot be determined from this information.
195 degrees.
290 degrees.
110 degrees.
38. When an aircraft lands on a southerly heading in the southern hemisphere, the DRMC will indicate?
180 degree turn to the west
180 degree turn to the east.
No apparent turn.
Oscillations.
39. What will the compass indicate as an aircraft lands and decelerates on a westerly heading in the northern hemisphere?
No turn.
Turn to west.
Turn to south.
Oscillations
40. A magnetic compass must be swung?
Change of base airfield.
After long term changes in longitude.
Short term changes in longitude
After long term changes in latitude.
41. The flux gate of a gyro magnetic compass transmits data to?
The erecting system
The amplifier
The annunciator.
The error detector
42. The principle cause of errors in a direct reading magnetic compass is?
Turning.
Magnetic deviation
Latitude
Parallax
43. Magnetic dip angle at the south pole is?
90 degrees.
zero
60 degrees.
45 degrees.
44. The greatest cause of errors in a direct reading magnetic compass is?
Changes in magnetic deviation.
Latitude changes
Turning
Parallax
45. When turning from SW to SE at 45 degrees north, the roll out should occur at?
140 degrees.
135 degrees.
115 degrees.
150 degrees.
46. The sensitivity of a magnetic compass can be affected by?
Both of the above.
None of the above.
The H component of the earth's magnetic field.
The Z component of the earth's magnetic field.
47. The roll out must be performed at .... when turning from NW to SE in the southern hemisphere?
125 degrees.
145 degrees.
135 degrees.
115 degrees.
48. A magnetic compass must be swung after?
short term change in longitude.
A short term change in latitude.
Long term change in latitude.
long term change in longitude.
49. What is the function of the latitude nut on a DI?
To compensate for transport error.
To correct coriolls effect.
To compensate for latitude error.
To compensate for earth rate error.
50. In an aircraft taking-off on a westerly heading in the northern hemisphere, what will its DRMC indicate?
Oscillations about west.
No turn
Southerly turn.
Northerly turn.
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