Generally what line lies closer to the pole?

The rhumb line or great circle depending on the chart used.

What is the definition of "morning civil twilight"?

Morning civil twilight is the period in the morning from the centre of the Sun is 6° below the horizon until the upper limb of the Sun appears at the horizon.

The period in the morning. just before sunrise.

The period of semi-darkness in morning.

The period when the Sun, in the morning, has its centre between 6° under the horizon and the horizon.

Observed from a position on the surface of the Earth the heavenly bodies seem to:

not change their relative positions on the sky.

move from West to East on the Southern Hemisphere.

move from East to West on the Northern Hemisphere.

The magnetic force causing compass deviation will be a force in direction:

perpendicular to the compass needle.

parallel to the magnetic meridian.

perpendicular to the aircraft lateral axis.

perpendicular to the aircraft longitudinal axis.

The purpose of establishing a grid is:

to provide a system for directions where a great circle has a constant direction, even if its true direction varies.

to make the system of latitude and longitude available on a gridded map.

to make a chart covering high latitudes that has the same qualities as the equatorial Mercator chart.

to minimise the errors introduced when making calculations involving variation.

In a particular position the horizontal and the total strength of the terrestrial magnetic field are the same. This position is:

between the geographic and the magnetic pole.

The deviation will change with a change in aircraft heading:

because the undesired magnetic pole is moved relative to the direction of the Earth's magneticfield.

because the relative direction of the magnetic meridian is changed.

because the strength of the undesired hard magnetism is changed.

because the magnetic inclination will change whenever the heading is changed.

What is the meaning of the term standard time?

It is the time set by the legal authorities for a country or part of a country.

It is the time zone system applicable only in the USA.

It is a expression for local mean time.

follows separate paths out of the North polar regions, one currently running through western Europe and the other through the USA.

is midway between the Magnetic North and South Poles.

follows the geographic equator.

is the shorter distance between the respective true and Magnetic North and South Poles.

A great circle is defined as:

a circle on the surface of a sphere, whose plane is cutting through the centre of the sphere.

a circle in any plane on the surface of a sphere.

a circle running on the outside of the sphere.

a circle on the surface of the sphere, with its plane running perpendicular to the axis of rotation.

When the Sun's declination is northerly:

the daylight period is shorter in the southern hemisphere than the northern.

it is winter on the northern hemisphere.

the sunrise occurs earlier at southern latitudes than the northern latitudes.

midnight Sun may be observed at the South Pole.

"Mean time" has been introduced in order to:

introduce a constant measurement of time, independent of the daily variations in the movement of the Sun as observed from the Earth

compensate for the irregularities of the speed of rotation of the Earth around it's axis.

save energy as the problem of adjusting our watches entering every leap year is eliminated.

have one fixed time to be used within the border of a country.

Compass deviation is defined as the angle between:

Magnetic North and compass North.

the horizontal and the total intensity of the Earth's magnetic field.

Referring to the Earth's magnetic field:

the inclination is 90° at the magnetic poles.

the inclination is 90° at the geographical poles.

the inclination decreases with increased geographical latitude.

the dip is maximum at the magnetic equator.

When the time is 14:00 LMT at 90° west, it is:

06:00 LMT at the Prime meridian.

Geodetic latitude and geocentric latitude coincide:

at the Poles and on the equator.

The value of magnetic variation:

varies between maximum values of 45°E and 45°W.

is always 0° at the magnetic equator.

considered to be a perfect sphere as far as basic (simple) navigation is concerned.

a sphere which has a larger polar circumference than equatorial circumference.

a sphere whose centre is equidistant (the same distance) from the Poles and the Equator.

none of the above statements is correct.

The time interval between sunrise and sunset is dependent on:

The declination of the sun and the latitude of the observer.

The date and the longitude of the observer.

The inclination of the axis of the earth and the longitude of the observer.

The latitude and the longitude of the observer.

the period elapsed between two successive transits of a heavenly body.

the period from morning to evening.

the period from sunrise to sunset.

the period in which day flying Is authorized.

When is the magnetic compass most effective?

About midway between the magnetic poles.

In the region of the magnetic South Pole.

In the region of the Magnetic North Pole.

The prime meridian is:

The meridian running through Greenwich, England.

The meridian having the highest value of longitude.

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the CH = 220°, Variation = 12°E, Deviation = 2°W, what is the corresponding TH?

TH = 234°

TH = 206°

TH = 230°

TH = 210°

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The long term periodic change in the Earth's Magnetic Field

is caused by sunspot activity.

is caused by the westerly movement of the geographic North Pole.

affects mainly the compass deviation.

is reflected in the slow movement of the magnetic poles.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is meant by "Aphelion"?

The point of the Sun's orbit furthest away from the Earth.

The point of the Sun's orbit closest to the Earth.

The point of the Earth's orbit furthest away from the Sun.

The point of the Earth's orbit closest to the Sun.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Deviation applied to magnetic heading gives:

magnetic course.

magnetic track.

true heading.

compass heading.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the time is 20:00 UTC, it is:

14:00 LMT at 90° West.

24:00 LMT at 120° West.

12:00 LMT at 60° East.

08:00 LMT at the Prime meridian.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a sunrise/sunset table given for the 28th of june at a certain latitude, sunrise is given as 0239 and sunset is given as 2127. What is the latitude?

55°S

60°N

80°N

00°N/S

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Directive Force:

is zero over the geographical poles.

equals the vertical component of the Earth's magnetic field.

is about twice as strong on 60°N/S as on the Equator.

is the component of the Earth's magnetic field which aligns the compass needle.

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Gnav4

If the CH = 220°, Variation = 12°E, Deviation = 2°W, what is the corresponding TH?

The long term periodic change in the Earth's Magnetic Field

What is meant by "Aphelion"?

Deviation applied to magnetic heading gives:

When the time is 20:00 UTC, it is:

In a sunrise/sunset table given for the 28th of june at a certain latitude, sunrise is given as 0239 and sunset is given as 2127. What is the latitude?

The Directive Force:

Generally what line lies closer to the pole?

What is the definition of "morning civil twilight"?

Position A is located on the equator at longitude 130°00'E. Position B is located 100 NM from A on a bearing of 225° (T). The coordinates of position B are:

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