351) To center a compass bowl in its binnacle, you should have the ship on an even keel, heading north or south, and adjust the screws until __________. no change of heading by compass is observed if you raise and lower the heeling magnet
352) Variation is not constant; it is different with every change in __________. geographical location
353) When adjusting a magnetic compass for error, a deviation table should be made __________. after adjusting the fore-and-aft and athwartships permanent magnets
354) Which compensates for errors introduced when the vessel heels over? A single vertical magnet beneath the compass
355) 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°. Which action should be taken? Use the athwartships magnets and adjust the compass until it reads 002°.
356) 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 276°. You should now adjust the compass until it reads __________. 273°
357) The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval? Annually
358) The permanent magnetism of a vessel may change in strength due to __________. major structural repair
359) To find a magnetic compass course from a true course you must apply __________. deviation and variation
360) To find a magnetic course from a true course you must apply __________. variation
361) Which magnetic compass corrector(s) can be set while the vessel is on a heading of magnetic east or magnetic west? Flinders bar
362) Which magnetic compass corrector(s) can be set while the vessel is on a heading of magnetic east or magnetic west? Fore-and-aft magnets
363) Which magnetic compass corrector(s) CANNOT be set while the vessel is on a heading of magnetic north or magnetic south? Flinders bar
364) What is an advantage of the magnetic compass aboard vessel? It is reliable due to its essential simplicity
365) A quality of hard iron of being magnetized to retain its poles, more or less permanently, is called permanent magnetism
366) A quality of hard-iron of being magnetized to retain its poles, more or less permanently is called permanent magnetism
367) Variation is not constant; it is different with every change in __________? geographical location
368) It is the change of deviation for a heel of 1 deg while the vessel is on compass heading 000 deg coefficient J
369) It is the ratio of the strength of the magnetic field inside the metal to the strength of the external field (H) permeability
370) Compass error is equal to the ________ Algebraic sum of the Variation and Deviation
371) The art of analyzing, splitting up the total magnetic force of the compass needle into various parts, is known as _______ compensating the compass
372) The art of analyzing, splitting up the total magnetic force of the compass needle into various parts, is known as. compensating the compass
373) Isogonic lines are lines on a chart that connect points of ___________? equal magnetic variation
374) The heading of a vessel is indicated by what part of the compass? Lubber's line
375) Deviation Varies with the change of. heading
376) Deviation varies with the change of ________ heading
377) For practical purposes, the poles are assumed to be at the ends of the magnet. The distance between the poles is the effective length
378) For practical purposes, the poles are assumed to be at the ends of the magnet. The distance between the poles is the_____ effective length
379) It is the direction in which a North pole would be urged in that field of the magnet away from the RED towards the BLUE pole. This direction is called direction of the field
380) It the direction in which the north pole would be urged in that field in the magnet away from the RED towards the BLUE pole. This direction is called___ direction of the field
381) The direction of the meridian through the observer towards the North geographic pole is__________. true north
382) This is the product of the pole strength and the length of a magnet. Magnetic Moment
383) Gyroscopic inertia is the property of the gyroscope ________? to maintain its axis or plane of spin
384) If a magnet is mounted; as in a compass so that it is free to turn in a horizontal plane, it will come to rest with one end pointing approximately towards the North Magnetic Pole. This end is called North seeking or red pole
385) If the magnet is mounted, as is compass, so that it is free to turn in a horizontal plane, it will come to rest with one end pointing approximately towards the north magnetic pole. This end called north seeking or____ red pole
386) The magnetic force is concentrated at points near the ends, called the poles
387) The magnetic force is concentrated at points near the ends, called the____ poles
388) A gyro compass error in which dumping is accompanied by offsetting the point of application of the force from a mercury ballistics known as ________ tangent latitude error
389) Magnetic flux is also__________. Pole Strength
390) At the magnetic equator there is no induced magnetism in the vertical soft iron because __? there is no vertical component of the Earth's magnetic field
391) Variation is the horizontal angle at any place between the directions of _________? the true north and the magnetic north
392) On what magnetic heading of the vessel is the maximum deviation caused by induced magnetism in vertical soft iron? East and west
393) A vessel is heading magnetic east and its magnetic compass indicates a heading of 093 . What action should be taken to remove this error during compass adjustments? if the red ends of the magnets are forward, and the fore-and aft tray is at the bottom, you should remove some magnets.
394) The deviation of the compass aboard ship is caused by ____________. Iron on the ship
395) The most appreciable change of the value of variation which goes, on persistently over long period of time is referred to as _______. Secular change
396) The art of analyzing, splitting up the total magnetic force of the compass needle into various part is known as ______. Compensating the compass
397) Compass error is equal to _________. Algebraic sum of variation and deviation
398) When adjusting a magnetic compass using the fore-and-aft permanent magnets, you should __________. use the magnets in pairs, from the bottom up, with the trays at the lowest point of travel
399) 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? Flinders bar first, then the spheres and heeling magnet
400) Lines on a chart which connect points of equal magnetic variation are called __________. isogonic lines
No comments:
Post a Comment