MARINA Deck Reviewer 251-300

251) 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? The Flinders bar

252) Deviation is eliminated as nearly as practicable, by introducing at the compass a magnetic field that is equal in magnitude and opposite in polarity to that of the vessel, this process is called compass adjustments

253) What is the effect of a change of latitude on uncorrected deviation due to permanent magnetism? deviation will increase due to decrease of compass needle’s north-seeking power with increased magnetic latitude

254) The quality that a substance possesses in retaining its magnetism once it is magnetized is called ________. field of the magnet

255) The gyro compass is affected by three natural errors. One of these is caused when the ship rolls and pitches wherein the gyro is subjected to athwartship and fore-and-aft acceleration, and is called __________? rolling error

256) It is a term used to identify the gyro error that occurs during the change of course and speed as a result used to absorb the oscillation of the gyro axis. Damping error

257) A magnetic corrector bar for compensating against vertical soft irons like the funnels flinders bar

258) A magnetic corrector bar for compensating against vertical soft irons like the funnels flinders bar

259) It is an angle between the grid and magnetic meridians at any place. Grivation

260) Magnets are placed in horizontal rays in the compass binnacle to compensate for the permanent magnetism of the ship

261) Which statement about the flinders of the magnetic compass is correct? If compensates for the error caused by the vertical component of the earth's magnetic field

262) North magnetic pole is located in a region North of Hudson, in general vicinity of Lat 70 degrees, North / Longitude 097 degrees West

263) North magnetic pole is located in a region north of Hudson, in general vicinity of____ lat 70 degrees, north/longitude 097 degrees west

264) This phenomenon occurs whether electrical charges is moving along a wire, flowing with the magma of the earth's core encircling the earth at high altitudes as a stream of charged particles, or rotating around the nucleus of an atom magnetism

265) The horizontal component of the compass is so important that it gives the compass the ability to point north is called _________ directive force

266) The horizontal component of the compass is so important that gives the compass needle the ability to point north is called. directive force

267) The quantity of magnetism concentrated at the point near the ends, or poles is called pole strength

268) The quantity of magnetism concentrated at the point near the ends, or poles is called____ pole strength

269) It is the strength of the fields at any point, measured in a direction parallel to the field total intensity

270) An error of the magnetic compass caused by the magnetic field __________._ Variation

271) The deviation that changed sign approximately each 90 degrees change of heading caused by induced magnetism in the horizontal soft iron is called Quadrantal Deviation

272) Magnetic equator may be defined as the line joining places where there is no dip and for this reason it is sometimes known as aclinic lines

273) Magnetic equator may be defined as the line joining places where there is no dip and for this reason it is sometimes known as_____ aclinic lines

274) The influence of every magnet is felt in this region which surrounds the magnet is called___ field of the magnet

275) The influence of every magnet is felt in this region which surrounds the magnet is called field of the magnet

276) Magnetism which is present only when the material is under the influence of an external field induced magnetism

277) As a vessel changes course to starboard, the compass card in a magnetic compass _____________. remains aligned with compass north

278) In magnetism, the quantity of flux per square meter cross section taken at right angles of the direction of the flux is known as _______ flux density

279) In magnetism, the quality of flux per square meter cross section taken at right angles of the direction of the flux is known as. flux density

280) It is the horizontal intensity component along a geographic meridian north component

281) The earth's magnetic pole in the northern Hemisphere (North Magnetic Pole) has what kind of magnetism? south magnetism

282) What is the cause of variation which affects the directive force of a magnetic compass of a ship? magnetic force from the earth's magnetic field

283) The vertical component of the earth's magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. When you are adjusting a compass what corrects for this coefficient of the deviation? the flinders bar

284) Parameter P is what kind of component in magnetism? fore-and aft component

285) Which statement about the finders of the magnetic compass is correct? It compensates for the error caused by the vertical component of the earth's magnetic field

286) It is named westerly if the magnetic north is to the westward of the true north and easterly. If the magnetic north is to the eastward of true north is called, the Magnetic variation

287) Deviation varies with the change of _________. heading

288) A line connecting points of equals magnetic dip, is called as _________. Isoclinic line

289) The curve that passes through the places of zero and dip and without inclination on the compass needles otherwise known as __________. magnetic equator

290) Your vessel is steering 197º PSC, variation for the area is 7ºE, and deviation is 4ºW. The wind is from the west, producing a 2º leeway. What is the true course being mode good? 198ºT

291) You desire to make good a true course of 129º. The variation is 7ºE, deviation is 4ºE, and gyrocompass error is 2ºW. An easterly wind produces a 4º leeway. What is the course to steer per standard compass to make good the true course? 114º

292) 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? The Flinders bar

293) A single vertical magnet placed underneath the compass in the binnacle is used to compensate for __________. deviation caused by the vessel's inclination from the vertical

294) By convention, the south pole of a magnet is painted __________. blue

295) Heeling error is defined as the change of deviation for a heel of __________. 1°While the vessel is on a compass heading of 000°

296) Induced magnetism is found in __________. soft iron

297) Magnetism which is present only when the material is under the influence of an external field is called __________. induced magnetism

298) Permanent magnetism is caused by __________. the earth's magnetic field affecting the ship's hard iron during construction

299) The annual change in variation for an area can be found in __________. the center of the compass rose on a chart of the area

300) The error in a magnetic compass caused by the vessel's magnetism is called __________. deviation