Air Navigation question bank

Mercator Charts - Scale: DGCA Air Navigation questions

5 sample questions from Oxford, with the correct answer shown.

Sample questions

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Question 1

On a Mercator chart, the scale at the Equator is 1:3500000. What is the scale at 37°S?

Question 2

On a Mercator chart, the scale at 50°N is 1:4500000. What is the scale at the Equator?

Question 3

On a Mercator chart, the scale at 15°N is 1:1500000. What is the scale at 47°S?

Question 4

On a Mercator chart, the chart length between meridians 1° apart is 3.2 inches. What is the scale of the chart as a representative fraction (RF) at 50°N?

Question 5

A Mercator chart is to be constructed at a scale of 1:2237000 in latitude 44°N. What is the required spacing in centimetres between meridians 1° apart?

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