Vayudoot Aviation

1. Compass swings should be carried out:

on the active runway.

on the apron.

at the holding point.

only on the compass swinging base or site.

2. Deviation due to coefficient A is mainly caused by

a misaligned lubber line.

hard iron force acting along the longitudinal axis.

vertical soft iron forces.

hard and soft iron forces acting along the lateral axis.

3. Aircraft magnetism caused by Hard Iron:

varies indirectly with magnetic latitude.

varies directly with magnetic latitude.

is not usually influenced by the earth's magnetic field.

is maximum on east and west.

4. 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.

answers 1, 2 and 3 are all correct.

only answer 1 is correct.

none of the above answers are correct.

answers 1 and 3 are correct.

5. Aircraft magnetism caused by Vertical Soft Iron

varies as the cosine of the compass heading.

varies with magnetic latitude but not with heading.

varies with magnetic heading but not with magnetic latitude

it is not affected magnetic latitude or heading.

6. European regulations (CS Ops-1) state that the maximum permissible deviations after compensation are

three degrees for a direct reading magnetic compass, and one degree for a remote indicating compass.

one degree for a direct reading magnetic compass, and eleven degrees for a slaved compass.

ten degrees for a remote indicating compass, and one degree for a direct reading magnetic compass.

one degree for a remote indicating compass, and ten degrees for a direct reading magnetic compass.

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Questions for AIRCRAFT MAGNETISM