Gnav (301-350)

The initial straight track from A (75°N 60°E) to B (75°N 60°W) on a polar stereographic chart is:

• 360°

• 030°

• 060°

• 330°

A polar stereographic chart is used for navigation. The straight line between A 75°S 166°E and B 78°S 154°E is drawn in this chart. The true track angle of the rhumb line is 223°.Calculate the direction (T) of the straight line in position B:

• 217°

• 235°

• 211°

• 229°

What is the value of the convergence factor on a Polar Stereographic chart?

• 0.866

• 0.5

• 0.0

• 1.0

An aeronautical chart is conformal when:

• every great circle is represented by a straight line in the map.

• the meridians and parallels are perpendicular to each other.

• the map is an equidistant normal projection.

• At any point the scale over a short distance in the direction of the parallel is equal to the scale in the direction of the meridian and the meridians are perpendicular to the parallels.

The Polar Stereographic projection is:

• a plane projection.

• a cylinder projection.

• a variable cone projection.

• a conical projection.

On a polar stereographic chart, the initial great circle course from A 70°N 060°W to B 70°N 060°E is approximately:

• 030° (T)

• 330° (T)

• 150° (T)

• 210° (T)

In a navigation chart a distance of 49 NM is equal to 7 cm. The scale of the chart is approximately:

• 1 : 7 000 000

• 1 : 700 000

• 1 : 1 300 000

• 1 : 130 000

The total length of the 53°N parallel of latitude on a direct Mercator chart is 133 cm. What is the approximate scale of the chart at latitude 30°S?

• 1 : 30 000 000

• 1 : 26 000 000

• 1 : 18 000 000

• 1 : 21 000 000

If the chart scale is 1 : 500 000, what Earth distance would be represented by 7 cm on the chart?

• 3.5 km

• 35 NM

• 35 000 m

• 0.35 km

In which of the following projections does a plane surface touch the reduced Earth at one of the Poles?

• Stereographic.

• Direct Mercator.

• Lambert's.

• none of the above.