Vayudoot Aviation

1. Aircraft magnetism caused by Hard Iron:

is maximum on east and west.

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

varies indirectly with magnetic latitude.

varies directly with magnetic latitude.

2. 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.

answers 1 and 3 are correct.

none of the above answers are correct.

3. 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.

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.

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

4. Deviation due to coefficient A is mainly caused by

hard and soft iron forces acting along the lateral axis.

vertical soft iron forces.

a misaligned lubber line.

hard iron force acting along the longitudinal axis.

5. Compass swings should be carried out:

at the holding point.

on the apron.

on the active runway.

only on the compass swinging base or site.

6. Aircraft magnetism caused by Vertical Soft Iron

varies with magnetic latitude but not with heading.

varies as the cosine of the compass heading.

varies with magnetic heading but not with magnetic latitude

it is not affected magnetic latitude or heading.

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Questions for AIRCRAFT MAGNETISM