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43問 • 1年前

Wilfred Feliciano

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What lines connect points of equal point magnetic variation?

Isogonic Line

What lines connect points of no magnetic variation?

Agonic Line

What is the term used for which the magnetization of magnetic material is in a uniform direction?

Domain

What is the term used for magnetic properties similar to those of iron. In other words, you can make a magnet out of it?

Ferromagnetic materials

What is the term used as deflection right or left of the magnetic meridian?

Deviation

What type of magnetism refers to a non-magnetic iron is placed near a magnet it gets magnetized. As soon as the magnetic field disappears, the magnetism of the magnet is lost?

Induced Magnetism

What type of magnetism may change in strength due to collision with another vessel, struck by lightning or moored on a constant heading for a long period?

Sub-Permanent Magnetism

What part of the ship does not belong on induced magnetism?

Hull

What part of the ship does not belong on permanent magnetism?

Masts

What type of magnetism remains after the exciting force has been removed?

Permanent Magnetism

What is the angle between the Earth's magnetic field and the Earth's surface?

Inclination

What is the term used for the angular difference between the true north and magnetic variation?

Variation

What is the term used for line of force?

Magnetic Flux

What is the angle between vertical and horizontal line of force?

Angle of Dip

The deviation of the compass from true north is an angle called?

Declination

It is a course whose bearing is relative to the meridian. by

True Course

Who invented gyroscope?

Jean-Bernard-Leon Foucalt

What part of gyro compass used for converting the ship's power supply into the power necessary for operating the static inverter and transmission units?

Power Adopter

What part of gyro compass consist of amplifiers and repeater switches

Transmission Unit

What part of gyro compass helps for computing and amplifying circuit components?

Control Cabinet

What is the term used for the process of rotating object's tendency to maintain it's orientation?

Gyroscopic Motion

It is a part of magnetic compass that indicates direction to the Earth's magnetic field or the approximate position of north or south.

Magnetic Needle

At what year does magnetic compass used for maritime navigation?

1111-1117

What is the term used for a fixed point on the globe?

Geographic North

consists of a sensitive element of gyroscope?

Master Compass

the ship's heading shown by master compass by means of a signal from the transmission unit.

Repeater Indicates

Who First use Magnitic Compass?

Song dynasty

The magnetic compass was first invented as a device for divination as early as the Chinese?

Han dynasty and Tang dynasty

China by the military for navigational orienteering by?

1040-44

Iron or steel which is easily magnetized by induction, but losses its magnetism when the magnetic field is removed? can be demagnetized once it is magnetized.

soft iron

Iron or steel which is NOT readily magnetized by induction, but which retains a high percentage of the magnetism acquired.

Hard iron

the line connecting zero magnetic dip.

Aclinic line

the lines connecting points of equal magnetic dip

Isoclinic line

the direction in which the north end of a compass needle or other freely suspended magnet will point in response to the earth's magnetic field

Magnetic North

are rapidly replacing the use of other traditional compasses. However, most military and ships use the gyro compass or magnetic compass if GPS compass could not pick up enough satellite. Many hikers and drivers like this compass due to its relative reliability.

Gps compass

In this modern digital world, compass are becoming more popular. These use many of the electronic magnetic sensors which would calculate the accurate direction the compass is pointing

Solid state compass

This compass relies on the direction of celestial bodies to find true north, which is used in many circumstances, mainly in the far north and south poles where magnetic compass would become erratic and gyro compass stops working.

Astrocompass

It is a special type of compass developed in 19th century which determines the true north. The gyro compass is commonly used in large ships and in other circumstances where the accurate prediction of true north is needed

Gyro compass

is used in ships mainly for the purpose of steering. Since the compass is an electronic one, th errors is greatly re

Fluxgate compass

It is a sophisticated device designed for highly accurate navigation. The prism sighting arrangement allows the user to read the compass bearings while seeing distant objects.

Prismatic compass

for directional readings since the moving card absorbs much of the motion of the boat.

Card compass

allowing the user to hold both the map and the compass in one hand while travelling at speed by bike or by canoe.

Thumb compass

It is the most affordable compass. This compass includes a magnifying lens for map reading, luminous components for low light conditions and different scales for world wide use.

Base plate compass

M#5 Section and Title v2

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M#5 Section and Title v2