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CPL Test Series
Question Bank
Questions for AIRCRAFT MAGNETISM
Answer the following questions
Test Mode
Training Mode
1. The aim of a compass swing is: 1. to find deviation on the cardinal headings and to calculate coefficients A, B and C. 2. to eliminate or reduce the coefficients found. 3. to record any residual deviation and to prepare a compass correction card.
only answer 1 is correct.
answers 1 and 3 are correct.
none of the above answers are correct.
answers 1, 2 and 3 are all correct.
2. Deviation due to coefficient A is mainly caused by
hard iron force acting along the longitudinal axis.
vertical soft iron forces.
a misaligned lubber line.
hard and soft iron forces acting along the lateral axis.
3. Compass swings should be carried out:
at the holding point.
only on the compass swinging base or site.
on the apron.
on the active runway.
4. Aircraft magnetism caused by Vertical Soft Iron
varies as the cosine of the compass heading.
it is not affected magnetic latitude or heading.
varies with magnetic heading but not with magnetic latitude
varies with magnetic latitude but not with heading.
5. Aircraft magnetism caused by Hard Iron:
is maximum on east and west.
varies indirectly with magnetic latitude.
is not usually influenced by the earth's magnetic field.
varies directly with magnetic latitude.
6. European regulations (CS Ops-1) state that the maximum permissible deviations after compensation are
one degree for a direct reading magnetic compass, and eleven degrees for a slaved compass.
three degrees for a direct reading magnetic compass, and one degree for a remote indicating compass.
one degree for a remote indicating compass, and ten degrees for a direct reading magnetic compass.
ten degrees for a remote indicating compass, and one degree for a direct reading magnetic compass.
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