Navigational instrument with compasses - Quiz #10
Authored by florencio caringal
Professional Development
Professional Development
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Earth’s magnetic field is primarily generated by:
Ferromagnetic materials in the crust
Convection currents in the outer core
Solar wind interacting with the ionosphere
Permanent alignment of mantle minerals
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Magnetic inclination (dip) is zero at:
Magnetic poles
Geographic equator
Magnetic equator
45° latitude
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ship’s magnetic signature causing deviation is classified as:
Permanent, induced, and variable
Only permanent and induced
Only variable due to cargo
Unaffected by ship’s heading
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quadrantal deviation is maximum on headings of:
000°, 090°, 180°, 270°
045°, 135°, 225°, 315°
030°, 120°, 210°, 300°
060°, 150°, 240°, 330°
5.
OPEN ENDED QUESTION
3 mins • 1 pt
A Flinders bar compensates for:
Evaluate responses using AI:
OFF
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After degaussing, a compass must be:
Replaced immediately
Re-adjusted using correctors
Used only in equatorial regions
Ignored unless deviation exceeds 10°
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compass with a deviation table showing +4°E on 090° and -2°W on 270° indicates:
Symmetrical fore-and-aft magnetism
Asymmetrical athwartships magnetism
Pure quadrantal deviation
Instrumental error
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