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Question Bank
Questions for SCALE
Answer the following questions
Test Mode
Training Mode
1. Given: Chart scale 1 : 5 000 000. The chart distance between two points is 10 centimetres. Earth distance is approximately?
270 nm.
230 nm.
243 nm.
255 nm.
2. What is the distance between longitudes 179°E and 175°W on direct Mercator chart with a scale of 1 : 15 000 000 at the equator?
44 mm.
25 mm.
10 mm.
33 cm.
3. In a navigation chart a distance of 49 NM is equal to 7 cm. The scale of the chart is approximately?
1 : 2 000 000.
1 : 1 600 000.
1 : 2 300 000.
1 : 1 300 000.
4. Given: Chart scale 1 : 200 000. The chart distance between two points is 12 centimetres. Earth distance is approximately?
13 nm.
20 nm.
25 nm.
10 nm.
5. On a Direct Mercator chart at latitude of 70°N, a certain length represents a distance of 90 NM on the earth. The same length on the chart will represent on the earth, at latitude 10°N, a distance of?
210 nm.
259 nm.
265 nm.
220 nm.
6. The total length of the 45°N parallel of latitude on a direct Mercator chart is 200 cm. What is the approximate scale of the chart at latitude 60°S?
1 : 125 000.
1 : 26 050 000.
1 : 6 000 000.
1 : 10 000 000.
7. Approximately how many nautical miles correspond to 20 cm on a map with a scale of 1 : 2 000 000?
200 nm.
240 nm.
130 nm.
216 nm.
8. What is the distance between longitudes 176°E and 176°W on direct Mercator chart with a scale of 1 : 4 000 000 at the equator?
222 mm.
245 mm.
276 mm.
263 cm.
9. On a direct Mercator projection, at latitude 45° North, a certain length represents 79 NM. At latitude 30° North, the same length represents approximately?
93 nm.
97 nm.
65 nm.
78 nm.
10. On a Direct Mercator chart at latitude of 85°N, a certain length represents a distance of 98 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
974 nm.
905 nm.
920 nm.
880 nm.
11. On a Direct Mercator chart at latitude of 45°N, a certain length represents a distance of 25 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
45 nm.
25 nm.
20 nm.
31 nm.
12. The scale is correct on a Transverse Mercator chart?
Along the datum meridian and meridians at 90° to it.90
At the poles and the equator.
At the prime meridian.
Along the great circle of tangency.
13. On a Direct Mercator chart at latitude of 75°N, a certain length represents a distance of 75 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
200 nm.
125 nm.
251 nm.
210 nm.
14. A Mercator chart has a scale at the equator = 1: 3 704 000. What is the scale at latitude 60 °S?
1 : 1 500 000.
1 : 1 852 000.
1 : 1 408 000.
1 : 2 000 000.
15. Given: Chart scale is 1 : 1 850 000. The chart distance between two points is 4 centimetres. Earth distance is approximately?
40 nm.
35 nm.
55 nm.
50 nm.
16. On a Direct Mercartor chart at latitude of 45°N, a certain length represents a distance of 90 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
120 nm.
125 nm.
100 nm.
110 nm.
17. Given: Direct Mercator chart with a scale of 1 : 200 000 at equator; Chart length from 'A' to 'B', in the vicinity of the equator, 11 cm. What is the approximate distance from 'A' to 'B'?
12 nm.
15 nm.
22 nm.
10 nm.
18. A course of 120°(T) is drawn between 'X' (61°30'N) and 'Y'(58°30'N) on a Lambert Conformal conic chart with a scale of 1 : 1 000 000 at 60°N. The chart distance between 'X' and 'Y' is?
600 cm.
66.7 cm.
76.6 cm.
6.7 cm.
19. The scale on Lambert's conformal conic chart?
Is constant along a parallel of latitude.
Is constant along a meridian of longtitude.
Is contstant.
Varies slightly as a function of longitude and latitude.
20. Given: Chart scale 1 : 3 000 000. The chart distance between two points is 24 centimetres. Earth distance is approximately?
839 nm.
389 nm.
38.9 nm.
3.89 nm.
21. At 60°N the scale of a direct Mercator chart is 1 : 4 000 000. What is the scale at the equator?
1 : 12 000 000.
1 : 4 500 000.
1 : 6 000 000.
1 : 8 000 000.
22. What is the distance between longitudes 175°E and 175°W on direct Mercator chart with a scale of 1 : 7 000 000 at the equator?
159 mm.
145 mm.
163 cm.
176 mm.
23. A straight line drawn on a chart measures 4.63 cm and represents 150 NM. The chart scale is?
1 : 5 000 000.
1 : 6 000 000.
1 : 6 500 000.
1 : 4 500 000.
24. On a Lambert Conformal chart the distance between meridians 5° apart along latitude 37° North 9 cm. The scale of the chart at that parallel approxiates?
1 : 4 500 000
1 : 4 000 000
1 : 3 500 000.
1 : 5 000 000
25. In a navigation chart a distance of 55 NM is equal to 14 cm. The scale of the chart is approximately?
1 : 600 000.
1 : 300 000.
1 : 725 000.
1 : 700 000.
26. What is the chart distance between longitudes 179°E and 175°W on a direct Mercator chart with a scale 1 : 5 000 000 at the equator?
100 mm.
113 cm.
125 mm.
133 mm.
27. At 47° North the chart distance between meridians 10° apart is 5 inches. The scale of the chart at 47° North approximates?
1 : 12 000 000.
1 : 6 000 000.
1 : 600 000.
1 : 5 000 000.
28. On a direct Mercator projection, at latitude 45° North, a certain length represents 98 NM. At latitude 30° North, the same length represents approximately?
128 nm.
99 nm.
115 nm.
120 nm.
29. A straight line drawn on a chart measures 4.5 cm and represents 125 NM. The chart scale is?
1 : 4 400 000.
1 : 5 100 000.
1 : 6 200 000.
1 : 6 200 000.
30. The total length of the 53°N parallel of latitude on a direct Mercator chart is 127 cm. What is the approximate scale of the chart at latitude 30°S?
1 : 27 300 000.
1 : 6 000 000.
1 : 12 500 000.
1 : 2 600 000.
31. The total length of the 75°N parallel of latitude on a direct Mercator chart is 115 cm. What is the approximate scale of the chart at latitude 30°S?
1 : 6 000 000.
1 : 12 500 000.
1 : 30 000 000.
1 : 28 000 000.
32. On a Direct Mercator chart at latitude of 45°N, a certain length represents a distance of 90 NM on the earth. The same length on the chart will represent on the earth, at latitude 60°N, a distance of?
65 nm.
68 nm.
78 nm.
100 nm.
33. At 60°N the scale of a direct Mercator charts is 1 : 2 750 000. What is the scale at the equator?
1 : 2 500 000.
1 : 3 500 000.
1 : 5 500 000
1 : 1 500 000.
34. At 47° North the chart distance between meridians 10° apart is 6 inches. The scale of the chart at 47° North approximates?
1 : 5 000 000.
1 : 6 000 000.
1 : 12 000 000.
1 : 600 000.
35. On a Direct Mercator chart at latitude of 85°N, a certain length represents a distance of 60 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
596 nm.
620 nm.
580 nm.
605 nm.
36. Approximately how many nautical miles correspond to 9 cm on a map with a scale of 1 : 5 000 000?
240 nm.
256 nm.
256 nm.
243 nm.
37. Apprximately how many nautical miles correspond to 15 cm on a map with a scale of 1 : 2 000 000?
140 nm.
162 nm.
130 nm.
156 nm.
38. On a Mercator chart, at latitude 60°N, the distance measured between W002° and E008° is 20 cm. The scale of this chart at latitude 60°N is approximately?
1 : 788 000.
1 : 2 780 000.
1 : 27 800 000.
1 : 278 000.
39. On a Direct Mercator chart at latitude of 45°N, a certain length represents a distance of 96 NM on the earth. The same length on the chart will represent on the earth, at latitude 60°N, a distance of?
68 nm.
64 nm.
78 nm.
97 nm.
40. What is the distance between longitudes 165°E and 175°W on direct Mercator chart with a scale of 1 : 25 000 000 at the equator?
89 mm.
133 cm.
100 mm.
33 mm.
41. In a navigation chart a distance of 55 NM is equal to 7 cm. The scale of the chart is approximately?
1 : 1 600 000.
1 : 2 300 000.
1 : 2 700 000.
1 : 1 500 000.
42. On a Direct Mercator chart at latitude of 40°N, a certain length represents a distance of 90 NM on the earth. The same length on the chart will represent on the earth, at latitude 20°N, a distance of?
100 nm.
120 nm.
125 nm.
110 nm.
43. Approximately how many nautical miles correspond to 13 cm on a map with a scale of 1 : 2 000 000?
100 nm.
150 nm.
140 nm.
130 nm.
44. On a direct Mercator projection, at latitude 45° North, a certain length represents 70 NM. At latitude 40° North, the same length represents approximately?
45 nm.
86 nm.
76 nm.
90 nm.
45. The total length of the 75°N parallel of latitude on a direct Mercator chart is 140 cm. What is the approximate scale of the chart at latitude 30°S?
1 : 2 900 000.
1 : 25 000 000.
1 : 125 000.
1 : 6 000 000.
46. What is the chart distance between longitudes 179°E and 175°W on a direct Mercator chart with a scale of 1 : 2 000 000 at the equator?
313 cm.
300 mm.
325 mm.
333 mm.
47. What is the distance between longitudes 179°E and 179°W on direct Mercator chart with a scale of 1 : 500 000 at the equator?
467 mm.
444 cm.
159 mm.
333 mm.
48. At 60° N the scale of a direct Mercator chart is 1: 3 500 000. What is the scale at the equator?
1 : 4 500 000.
1 : 7 000 000.
1 : 500 000.
1 : 3 500 000.
49. What is the distance between longitudes 170°E and 170°W on direct Mercator chart with a scale of 1 : 20 000 000 at the equator?
133 mm.
125 cm.
111 mm.
100 mm.
50. On a Direct Mercator chart at latitude of 45°N, a certain length represents a distance of 39 NM on the earth. The same length on the chart will represent on the earth, at latitude 30°N, a distance of?
48 nm.
37 nm.
40 nm.
45 nm.
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