22-03. MAGNETISM – DIRECT READING COMPASS AND FLUX VALVE
All questions: 55
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1. The direct indicating compass is no more reliable when approaching:
1) the magnetic poles
2) the magnetic equator with an east or west heading
3) the magnetic equator with a north or south heading
The combination regrouping all the correct statements is:
2. If an aircraft, fitted with a Direct Reading Magnetic Compass (DRM
3. A flux valve senses the changes in orientation of the horizontal component of the earth’s magnetic field.
1) The flux valve is made of a pair of soft iron bars.
2) The primary coils are fed AC voltage (usually 400 Hz).
3) The information can be used by a “flux gate” compass or a directional gyro.
4) The flux gate valve casing is dependent on the aircraft three inertial axis.
5) The error in the value of the magnetic field indication is less than 0, 5%.
Which of the following combinations contains all of the correct statements?
4. During deceleration following a landing in a northerly direction, a magnetic compass made for the southern hemisphere indicates:
5. The compass heading can be derived from the magnetic heading by reference to a:
