Vayudoot Aviation

1. Aircraft magnetism caused by Hard Iron:

is maximum on east and west.

varies indirectly with magnetic latitude.

varies directly with magnetic latitude.

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

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.

none of the above answers are correct.

answers 1, 2 and 3 are all correct.

only answer 1 is correct.

answers 1 and 3 are correct.

3. Compass swings should be carried out:

at the holding point.

on the active runway.

on the apron.

only on the compass swinging base or site.

4. 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.

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.

5. Deviation due to coefficient A is mainly caused by

hard and soft iron forces acting along the lateral axis.

a misaligned lubber line.

vertical soft iron forces.

hard iron force acting along the longitudinal axis.

6. Aircraft magnetism caused by Vertical Soft Iron

varies with magnetic latitude but not with heading.

it is not affected magnetic latitude or heading.

varies with magnetic heading but not with magnetic latitude

varies as the cosine of the compass heading.

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