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CPL Test Series
Question Bank
Questions for THE DIRECT INDICATING COMPASS
Answer the following questions
Test Mode
Training Mode
1. The magnitude, and sense, of turning error shown by a direct reading compass varies with: 1. the design of the compass. 2. the direction of the turn. 3. the rate of turn. 4. which hemisphere the aircraft is in. 5. the heading of the aircraft. 6. the amount of dip at the aircraft's latitude.
only 2, 4 and 5 are correct.
only 1, 3, 5 and 6 are correct.
only 1, 2, 5 and 6 are correct.
all are correct.
2. During a sustained turn ....... the nearer magnetic pole, the effect of liquid swirl will ....... compass turning error.
away from; increase.
towards; increase.
away from; not affect.
towards; not affect.
3. An aircraft in the southern hemisphere is turning from a heading of 045 ° © to 315 ° © using a DGI. At the end of the turn the compass will read ....... than 315 ° and liquid swirl will ....... this effect.
less; decrease
more; increase
more; decrease
less; increase
4. In a standby direct reading compass there is
a low magnetic moment system, either of circular or bar configuration.
a single pendulously mounted bar magnet.
a non-pendulously mounted magnet system.
a circular magnet or pair of bar magnets pendulously mounted.
5. When carrying out a turn at the magnetic equator there will be
no turning error when turning through east or west
tendency to underread turns due to liquid swirl.
tendency to underread turns through south and overread turns through north.
no turning error.
6. For a position in the southern hemisphere, the effect of acceleration errors are greatest on headings
090 ° and 270 °
180 ° and 360 °
045 ° and 225 °
135 ° and 315 °
7. To improve the horizontality of a compass, the magnet assembly is suspended from a point
below the centre of gravity.
on the centre line of the magnet.
varying with magnetic latitude.
above the centre of gravity.
8. The main requirements of a direct reading magnetic compass are that it should be
easily read, floating in a transparent liquid, quick to react to change in aircraft heading.
aperiodic, horizontal, sensitive.
positioned directly in front of the pilot, easily corrected for magnetic deviation, aperiodic.
horizontal, sensitive, periodic.
9. In a standby compass the magnet system is immersed in a transparent liquid. The purpose of this liquid is to
increase sensitivity, decrease aperiodicity.
increase sensitivity, reduce liquid swirl.
increase sensitivity, increase aperiodicity.
increase sensitivity at high latitudes, lubricate bearings.
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