401) On an isomagnetic chart, the line of zero variation is the __________. agonic line
402) As a vessel changes course to starboard, the compass card in a magnetic compass __________. remains aligned with compass north
403) Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magnetism. These correctors are the __________. Flinders bar and quadrantal spheres
404) By convention, the Earth's south magnetic pole is colored __________. red
405) Deviation in a compass is caused by the __________. influence of the magnetic materials of the vessel
406) Deviation which is maximum on intercardinal compass headings may be removed by the __________. soft iron spheres on the sides of the compass
407) If the compass heading and the magnetic heading are the same then __________. there is no deviation on that heading
408) Magnetic information on a chart may be __________. all of the options
409) Magnetic variation changes with a change in __________. the vessel's position
410) Quadrantal error in a gyrocompass has its GREATEST effect __________. on intercardinal headings
411) The greatest directive force is exerted on the magnetic compass when the __________. vessel is near the magnetic equator
412) The magnetic compass magnets are acted on by the horizontal component of the Earth's total magnetic force. This magnetic force is GREATEST at the __________. magnetic equator
413) The permanent magnetism of a vessel may change in strength due to __________. all of the options
414) The purpose of the soft iron spheres mounted on arms on the binnacle is to compensate for __________. induced magnetism in the horizontal soft iron
415) You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic north but the compass reads 004°. You should now adjust the compass until it reads __________. 002°
416) You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 266°. What action should be taken? Adjust the compass with the fore-and-aft magnets until the compass reads 268°.
417) The points on the earth's surface where the magnetic dip is 90° are __________. the magnetic poles
418) The vertical angle between the horizontal and the magnetic line of force is the __________. dip
419) Variation is a compass error that you __________. cannot correct
420) Which magnetic compass corrector(s) can be set while the vessel is on a heading of magnetic northeast or magnetic southeast? Quadrantal spheres
421) Which would influence a magnetic compass? all of the options
422) Coefficient B is all of the options
423) The point or direction of the compass in which an object charted on chart is observed reckon from the north is bearing
424) A magnetic theory that believes the atoms within the molecules are themselves dipole, meaning having two magnetic poles, are referred to as ________ bi-polar theory
425) A magnetic theory that believes the atoms within the molecules are themselves dipoles, meaning having two magnetic poles, are referred to as. Bi-polar theory
426) The south seeking pole of the magnetic compass is symbolically colored blue
427) The south seeking pole of the magnetic compass is symbolically colored blue
428) It is a semi-circular which is proportional to the sine of the compass heading. It is the maximum on compass heading east or west, and zero on compass heading north or south. coefficient B
429) This is the quadrantal deviation which is proportional to the sine of twice the heading coefficient D
430) What is the angle between the true meridian and the compass needle? compass error
431) It is the flux lines that make the field of magnet. This imaginary lines which surrounds the magnet is called "Lines of Magnetic Force", or flux lines
432) It is the flux lines that makes the field of magnet, this imaginary lines which surrounds the magnet is called the lines of magnetic force or____ flux lines
433) The angle between the grind and magnetic is called grivation
434) M = 2l0 (where l is equal to)__________. half length of the magnet
435) A vessel is heading magnetic north and its magnetic compass indicates a heading of 086 degrees. What action should be taken to remove this error during compass adjustments? If the red ends of the magnets are to starboard, and the fore-and-tray is at the top, you should add some more magnets
436) Deviation in a compass is caused by the ____________? influence of the magnetic materials of the vessel
437) South magnetic pole is in the Antarctic, in the general vicinity of _____ lat 73 degrees south /longitude 155 degrees east
438) The compass that depend upon the earth’s magnetic for its directive force is__________. magnetic
439) The narrow belt surrounding the earth roughly midway between the magnetic poles where the earth's field is horizontal magnetic equator
440) Pole strength is also__________. Magnetic flux
441) A unit pole is that which is associated with a__________. Magnetic flux of one Weber
442) Certain ferromagnetic materials are so susceptible to a magnetizing field that they draw the flux lines into themselves, resulting in a greatly increased concentration of lines within the material. This process is called magnetic induction
443) Certain ferromagnetic materials are so susceptible to a magnetizing field that they draw the flux lines into themselves, resulting in a greatly increased concentration of lines within the material this process is called____ magnetic induction
444) It provides a convenient explanation of what happens when a bar of iron is magnetized in which molecules have aligned themselves with a resultant pole near the end. This theory is called molecular theory of magnetism
445) It provides a convenient explanation of what happens when a bar of iron is magnetized in which is molecules have aligned themselves, with a resultant pole near the end, this theory is called____ molecular theory of magnetism
446) These are caused by continuous vibration and hammering of the hull and superstructures, received while the ship is under construction permanent magnetic poles
447) These are caused by continuous vibration and hammering of the hull and superstructures, received while the ship is under construction. permanent magnetic poles
448) The north seeking pole of the magnetic compass is symbolically colored red
449) The north seeking pole of the magnetic compass is symbolically colored red
450) Deviation which is maximum on inter-cardinal headings may be removed by__________. soft iron spheres on the sides of the compass
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