Lambert’s Conformal Chart: DGCA Air Navigation questions

Question 1

A Lambert's conformal chart extends from 29°N to 45°N with standard parallels at 31°N and 43°N. At 43°N a standard parallel, is the scale the SAME, GREATER, or LESS than the scale at 45°N?

Accepted Answer

Less, 45°N is outside the standard parallels where scale expands, so scale there is larger

Answer

Same, scale is constant everywhere on a Lambert chart

Answer

Greater, 43°N is closer to the standard parallel so scale is bigger

Question 2

A Lambert's conformal chart has standard parallels at 31°N and 43°N. Is the scale at 43°N the SAME, GREATER, or LESS than the scale at 37°N?

Accepted Answer

Greater, 43°N is a standard parallel; 37°N is between the SPs where scale shrinks

Answer

Same, scale is constant along parallels of latitude

Answer

Less, 37°N is further from the poles so scale is larger there

Question 3

A Lambert's conformal chart has standard parallels at 31°N and 43°N. Is the scale at 43°N the SAME, GREATER, or LESS than the scale at 31°N?

Accepted Answer

Same, both 43°N and 31°N are standard parallels where scale is correct

Answer

Greater, 43°N is further from the Equator so it has a larger scale

Answer

Less, 31°N is closer to the Equator so scale is smaller there

Question 4

A Lambert's Conformal chart covers 42°S to 64°S with a convergency factor of 0.8. A straight-line track from K 48°S (178°E) to M (152°W) passes through L. The track direction at K is (102°T) and at L is (096°T). What is the longitude of position L?

Accepted Answer

174°30'W

Answer

170°30'E

Answer

168°00'W

Question 5

On the same Lambert chart CF=0.8, for the track from K 48°S (178°E) to M (152°W), what is the approximate rhumb line track from K to M?

Accepted Answer

(090°T)

Answer

(084°T)

Answer

(096°T)

Lambert’s Conformal Chart: DGCA Air Navigation questions

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