单选题The error in a magnetic compass caused by the vessel’s magnetism is called（）.AvariationBdeviationCcompass errorDbearing error
单选题
The error in a magnetic compass caused by the vessel’s magnetism is called（）.
A
variation
B
deviation
C
compass error
D
bearing error
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相关考题：
The compass error of a magnetic compass that has no deviation is ______.A.zeroB.equal to variationC.eliminated by adjusting the compassD.constant at any geographical location
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results ______.A.in the vessel's Official LogbookB.on the compass deviation cardC.in the compass deviation logD.on a Napier diagram
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
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south ________．A.Quadrantal spheresB.Heeling magnetsC.Flinders barD.Fore-and-aft magnets
Compass deviation is caused by ______.A.magnetism from the earth’s magnetic fieldB.misalignment of the compassC.magnetism within the vesselD.a dirty compass housing
Compass error is equal to the ______.A.deviation minus variationB.variation plus compass courseC.combined variation and deviationD.difference between true and magnetic heading
Deviation in a compass is caused by the ______.A.vessel’s geographic positionB.vessel’s headingC.earth’s magnetic fieldD.influence of the magnetic materials of the vessel
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.A.Compass error and variation are equalB.Compass north will be true northC.Variation will equal deviationD.There will be no compass error
单选题Compass deviation is caused by（）.Amagnetism from the earth's magnetic fieldBmisalignment of the compassCmagnetism within the vesselDa dirty compass housing
单选题Which statement about the Flinders bar of the magnetic compass is CORRECT（）.AIt compensates for the error caused by the vertical component of the Earth's magnetic fieldBIt compensates for error caused by the heeling of a vesselCIt compensates for quadrantal deviationDIt is only needed in equatorial waters
单选题Deviation in a compass is caused by the（）.Avessel's geographic positionBvessel's headingCearth's magnetic fieldDinfluence of the magnetic materials of the vessel
单选题If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE? （）ACompass error and variation are equalBCompass north will be true northCVariation will equal deviationDThere will be no compass error
单选题As a vessel changes course to starboard，the compass card in a magnetic compass（）.Aremains aligned with compass northBalso turns to starboardCfirst turns to starboard then counterclockwise to portDturns counterclockwise to port
单选题The lubber’s line of a magnetic compass（）.Aalways shows true north directionBindicates the vessel's headingCis always parallel to the vessel's transomDis located on the compass card
单选题A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）AIf the quadrantal spheres are all the way out，replace them with smaller spheresBIf the quadrantal spheres are all the way in，replace them with larger spheresCIf the quadrantal spheres are all of the way out，move the spheres inDIf the quadrantal spheres are all the way out，replace them with larger spheres.
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?（）AThe course change should be made rapidly to prevent transient induced magnetism while passing the intercardinal headingsBAfter the new heading is reached，the vessel should steam on that course for at least two minutes before the adjustmentCDuring the course change，you should gently tap the compass to remove any error caused by friction on the pivot bearingDAfter steadying on the new heading，the compass card should be slewed by a magnet and allowed to oscillate freely to remove any gaussin error
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? （）AMove the quadrantal spheres closer to the compassBRaise the heeling magnet if the red end is upCRemove some of the Flinders barDRaise or lower the athwartship magnets
单选题A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 317°. What action should be taken to remove this error during compass adjustment? （）AIf the quadrantal spheres are out as far as possible replace them with smaller spheresBIf the quadrantal spheres are in as far as possible remove one of the spheresCIf the quadrantal spheres are in as far as possible replace them with smaller spheresDIf the quadrantal spheres are out as far as possible，move the quadrantal spheres in
单选题Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.AQuadrantal spheresBHeeling magnetsCFlinders barDFore-and-aft magnets
单选题Variation is a compass error that you（）.Acan correct by adjusting the compass cardBcan correct by adjusting the compensating magnetsCcan correct by changing the vessel's headingDcannot correct
单选题Variation in a compass is caused by（）.Aworn gears in the compass housingBmagnetism from the earth's magnetic fieldCmagnetism within the vesselDlack of oil in the compass bearings
单选题What is an advantage of the magnetic compass aboard vessels?（）ACompass error is negligible at or near the earth's magnetic polesBIt does not have to be checked as oftenCIt is reliable due to it's essential simplicityDAll points on the compass rose are readily visible
单选题The total magnetic effects which cause deviation of a vessel’s compass can be broken down into a series of components which are referred to as（）.Adivisional partsBcoefficientsCfractional partsDequations
单选题The lubber’s line on a magnetic compass indicates（）.Acompass northBthe direction of the vessel's headCmagnetic northDa relative bearing taken with an azimuth circle
单选题The compass error of a magnetic compass that has no deviation is（）.AzeroBequal to variationCeliminated by adjusting the compassDconstant at any geographical location
单选题Magnets are placed in horizontal trays in the compass binnacle to compensate for the（）.Ainduced magnetism in the vessel's horizontal soft ironBchange in the magnetic field when the vessel inclines from verticalCpermanent magnetism of the vesselDmagnetic fields caused by electrical currents in the vicinity
单选题Compass error is equal to the（）.Adeviation minus variationBvariation plus compass courseCcombined variation and deviationDdifference between true and magnetic heading