Gnav 3

If the mean Sun moves 121°30' along the equator, that equals:

• 20 hours 10 minutes.

• 8 hours 06 minutes.

• 9 hours 15 minutes.

• 6 hours 20 minutes.

Standard time for some areas is listed in the Air Almanac as UTC +13 instead of UTC -11. The reason for this is:

• the sense of Earth rotation.

• the fact that they are keeping daylight saving time.

• the setup of the sunrise/sunset tables.

• keeping the same date as the political and/or economical entity to which they belong.

Which definition of the equator is correct?

• The equator is a great circle with its plane parallel to the Earth rotational axis.

• The equator is a small circle, the plane is parallel to the Earth rotational axis.

• The equator is a great circle with its plane perpendicular to the Earth rotational axis.

• The equator is a small circle with its plane perpendicular to the Earth rotational axis.

What is the value of magnetic dip at the South magnetic pole?

• 360°

• 0°

• 180°

• 090°

An aircraft is flying with the aid of an autopilot connected to the Inertial Navigation System (INS). The following two waypoints have been entered in the INS computer: WPT1: 60°N 030°W WPT2: 60°N 020°W When 025°W is passed the latitude shown on the display unit of the Inertial Navigation System will be:

• 60°05.7'N

• 60°11.0'N

• 60°00.0'N

• 59°49.0'N

Which statement regarding the apparent Sun and the mean Sun is correct?

• The mean Sun moves along the ecliptic, the apparent Sun along the celestial equator.

• The apparent Sun is not important for navigation as difference in time with the mean Sun is maximal 4 seconds.

• The apparent Sun is the visible Sun, the mean Sun is a fictitious Sun.

• The apparent Sun is a fictitious Sun coupled to UTC, the mean Sun is related to the local mean time.

The Earth can be considered as being a magnet with the:

• blue pole near the North Pole of the Earth and the direction of the magnetic force pointing straight up from the Earth's surface.

• red pole near the North Pole of the Earth and the direction of the magnetic force pointing straight down to the Earth's surface.

• blue pole near the North Pole of the Earth and the direction of the magnetic force pointing straight down to the Earth's surface.

• red pole near the North Pole of the Earth and the direction of the magnetic force pointing straight up from the Earth's surface.

The rhumb line track between position A (45°00'N, 010°00'W) and position B (48°30'N, 015°00'W) is approximately:

• 345°

• 300°

• 330°

• 315°

Location A: 50°N 030°W Location B: 50°S 030°W On 27th November it is noted that:

• Sunrise will be earlier at A than it is at B and sunset will be earlier at A than it is at B.

• Sunrise will be earlier at A than it is at B and sunset will be later at A than it is at B.

• Sunrise and sunset will be at the same time at A and B.

• Sunrise will be later at A than it is at B and sunset will be earlier at A than it is at B.

A route is flown from (85°S, 100°E) to (85°S, 140°W). At 180°E/W the Grid Track (GT) and True Track (TT) on a Polar Stereographic chart, whose grid is aligned with the Greenwich meridian, are respectively:

• 290°(G) and 110°(T).

• 070°(G) and 250°(T).

• 110°(G) and 290°(T).

• 250°(G) and 070°(T).