单选题Induced magnetism is found in（）.Ahard ironBsoft ironCvertical iron onlyDhorizontal iron only
单选题
Induced magnetism is found in（）.
A
hard iron
B
soft iron
C
vertical iron only
D
horizontal iron only
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相关考题：
Permanent magnetism is found in ______.A.hard ironB.soft ironC.vertical iron onlyD.horizontal iron only
A ship under construction or major repair will acquire permanent magnetism due to ______ while sitting stationary in the earth's magnetic field．A.hammering and jarringB.vibration and poundingC.varying magnetic fieldsD.stable or permanent magnetism of the ship
Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called ______．A.fluxB.polesC.magnetsD.azimuth
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude ________．A.Flinders barB.Soft iron spheresC.Fore-and-aft permanent magnets in their traysD.Heeling magnet
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed ______．A.permanent magnetismB.subpermanent magnetismC.induced magnetismD.variable magnetism
The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval ________．A.They are not subject to permanent magnetism; no check is necessaryB.SemiannuallyC.AnnuallyD.Every five years
A single vertical magnet placed underneath the compass in the binnacle is used to compensate for ______．A.The horizontal component of the permanent magnetismB.Deviation caused by the vessel's inclination from the verticalC.Induced magnetism in the horizontal soft ironD.Induced magnetism in the vertical soft iron
Magnetism which is present only when the material is under the influence of an external field is called ______.A.permanent magnetismB.induced magnetismC.residual magnetismD.terrestrial magnetism
单选题Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.AfluxBpolesCmagnetsDazimuth
单选题If a ship is proceeding towards the magnetic equator，the uncorrected deviation due to permanent magnetism（）.AincreasesBremains the sameCdecreasesDis unimportant and may be neglected
单选题What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.AFlinders barBSoft iron spheresCFore-and-aft permanent magnets in their traysDHeeling magnet
单选题This induced magnetism（）the permanent magnetism already present in the ship.Awill add toBwill subtract fromCmay add to or subtract fromDwill not change
单选题The vertical component of the Earth’s magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects for this coefficient of the deviation? （）AThe Flinders barBThe heeling magnetCQuadrantal soft iron spheresDBar magnets in the binnacle
单选题The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.Apermanent magnetismBsubpermanent magnetismCinduced magnetismDvariable magnetism
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The Flinders bar on a magnetic compass compensates for the（）.Ainduced magnetism in vertical soft ironBinduced magnetism in horizontal soft ironCpermanent magnetism in ship's steelDvessel's inclination from the vertical
单选题The quadrantal spheres are used to（）.ARemove deviation on the intercardinal headingsBRemove deviation on the cardinal compass headingsCRemove heeling errorDCompensate for induced magnetism in vertical soft iron
单选题The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.AThey are not subject to permanent magnetism; no check is necessaryBSemiannuallyCAnnuallyDEvery five years
单选题The permanent magnetism of a vessel may change in strength due to（）.Athe nature of the cargo being carriedBchanges in headingCmajor structural repairDAll of the above
单选题Permanent magnetism is found in（）.Ahard ironBsoft ironCvertical iron onlyDhorizontal iron only
单选题A ship under construction or major repair will acquire permanent magnetism due to（）while sitting stationary in the earth’s magnetic field.Ahammering and jarringBvibration and poundingCvarying magnetic fieldsDstable or permanent magnetism of the ship
单选题At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.Athe lines of force cross the equator on a 0°-180°alignmentBthe quadrantal error is 0°Cthere is no vertical component of the Earth's magnetic fieldDthe intercardinal headings have less than 1°