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单选题
A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.
A
the horizontal component of the permanent magnetism
B
deviation caused by the vessel's inclination from the vertical
C
induced magnetism in the horizontal soft iron
D
induced magnetism in the vertical soft iron
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A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?A.Move the quadrantal spheres closer to the compassB.Raise the heeling magnet if the red end is upC.Remove some of the Flinders barD.Raise or lower the athwartship magnets
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Which compensates for errors introduced when the vessel heels over ________．A.The soft iron spheres on the arms of the binnacleB.Magnets placed in trays inside the binnacleC.A single vertical magnet beneath the compassD.The Flinders bar
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单选题Which statement about the Flinders bar of the magnetic compass is CORRECT（）.A
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考题
单选题Which compensates for errors introduced when the vessel heels over（）.A
The soft iron spheres on the arms of the binnacleB
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单选题When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）A
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考题
单选题A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment? （）A
Move the quadrantal spheres closer to the compassB
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考题
单选题The Flinders bar on a magnetic compass compensates for the（）.A
induced magnetism in vertical soft ironB
induced magnetism in horizontal soft ironC
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考题
单选题Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors are the（）.A
fore-and-aft and athwartships magnetsB
dip needle and heeling magnetC
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Flinders bar and quadrantal spheres
考题
单选题You are about to go to sea and adjust the magnetic compass．To expedite the adjustment at sea，in what order should the following dockside adjustments be made（）.A
Flinders bar first，then the heeling magnet and spheresB
Heeling magnet first，then the Flinders bar and spheresC
Flinders bar first，then the spheres and heeling magnetD
Spheres first，then the Flinders bar and heeling magnet
考题
单选题The quadrantal spheres are used to（）.A
Remove deviation on the intercardinal headingsB
Remove deviation on the cardinal compass headingsC
Remove heeling errorD
Compensate for induced magnetism in vertical soft iron
考题
单选题A vesel’s LCG is determined by（）.A
dividing the total longitudinal moment summations by displacementB
dividing th etotal vertical moment summation by displacementC
multiplying the MTC by the longituinal momentsD
subtracting LCF from LCB
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单选题When adjusting a magnetic compass for error，a deviation table should be made（）.A
before correcting for any deviationB
after correcting for variationC
after adjusting the fore-and-aft and athwartships permanent magnetsD
before the quadrantal correctors are placed on the compass
考题
单选题Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.A
induced magnetism in the vessel's horizontal soft ironB
change in the magnetic field when the vessel inclines from verticalC
permanent magnetism of the vesselD
magnetic fields caused by electrical currents in the vicinity
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