Practice Test Three
1. If 120 nm are represented by a line of 6.8 inches on a chart, what is the length of
a line representing 60 km.
(a) 2.2 inches
(b) 4.4 inches
(c) 1.1 inches
2. At what distance apart in inches would two pinpoints taken at a 15 minute
Interval appear as a chart scale 1 : 5,00, 000 if the G/S was 210 kts
(a) 16.38 inches
(b) 12.76 inches
(c) None of the above
3. On a chart, a line of 2 inches long represents 50 statute miles. What is the
length of a line in centimeters representing 82 kilometers.
(a) 5.15 cm
(b) 20.58 cms
(c) 10.29 cms
4. Which is the longest scale 1 : 2,000,000 or 28 nm to one inch ?
(a) 1 : 2,000,000
(b) 1 inch : 28 nm
(c) None of the above
5. The scale at equator is 1:2,000,000. The distance as measured on the chart by a
straight line between A(60°N 70°W) and B(60°N 80°W) is 9.2 inches. What is
the scale at 60°N .
(a) 1 : 4,000,000
(b) 1 : 1,000,000
(c) 1 : 2,000,000
6. If the scale at 60°N is 1: 2,000,000, where is the scale of 1 :1,000,000
(a) 75° 31`N
(b) 72° 13` N
(c) 73° 31` N
7. In Lamberts projection, chart convergency is correct at
(a) standard parallels
(b) mid parallel
(c) equator
8. In polar stereographic projection, Great circle appear as
(a) Curves concave to pole when away from pole.
(b) straight line when closes to poles
(c) (a) and (b) above
9. What is the Ch lat and Ch long between points X(32° S and 12° E ) and B( 38 °N105°W )
(a) 60°N and 117°E
(b) 60°S and 117°W
(c) 60°N and 117°W
10. An aircraft flies from position A ( 45° S 100° E ) to B (45° N, 100° E ),
What is the Rhumb line distance?
(a) 5400 nm
(b) 2700 nm
(c) None of the above
11. For an aircraft flying at a ground speed of 420 kts, how long will it take to travel from
60° E to 180° E along 60° N parallel of lat .
(a) 12h 12.5`
(b) 08h 34`
(c) 14h 51`
12. An aircraft flies from A (48° 17` N 12° 17` E ) to B (48° 17` N 00° 24` W ).
What is the distance in nautical miles?
(a) 1012 nm
(b) 568 nm
(c) 506 nm
13. What is the distance between two meridians separated by 1° at 30° N latitude?
(a) 42 nm
(b) 30 nm
(c) None of the above
14. What is the Rhumb line and great circle distance from place A (30° N 90° W) to B ( 30°
N 90° E).
(a) 9353 nm and 7200 nm
(b) 17322 km and 13334 km
(c) Both (b) and (a) above.
15. Earth’s compression is the ratio difference between
(a) Equatorial diameter and polar diameter to the equatorial diameter
(b) Equatorial diameter and polar diameter to the polar diameter
(c) Equatorial radius and polar radius to the equatorial Diameter
16. How many rhumb lines can be drawn through any two points ?
a) Only One
b) many Rhumb lines
c) many Rhumb lines provided they are diametrically opposite
17. The parallels of latitude are
a) Small Circles
b) Rhumb lines
c) Can be Great circle, small circle and Rhumb lines
18. Change of Longitude (Ch long) is the
a) Difference in Longitude
b) Difference in longitude with indicating E/W direction
c) Both (a) and (b) above
19. Graticule is the
a) group of equator and meridians
b) group of meridians, equator and parallels of latitude
c) group of Prime meridians and parallels of latitude
20. The distance between two meridians away from equator is
a) same on any meridian
b) less on any meridian away from equator
c) more on any meridian away from equator
21. Longitude is the
(a) Shorter arc of parallel of latitude interrupted between Greenwich meridian
and meridian of the place.
(b) Shorter arc of the equator intercepted between Greenwich Meridian and
Meridian of the place.
(c) Shorter arc of the equator intercepted between prime meridian and parallel
of latitude of the place.
22. Ante meridian of the prime meridian is
(a) Meridian passing through a place.
(b) International date line.
(c) Greenwich meridian.
23. At parallel of lat of 60° S, the distance between meridians 175° E and 175° W is
(a) 420 nm
(b) 300 nm
(c) 1200 nm
24. The meridians cut at poles at a constant angle of
(a) 90°
(b) Ch Long
(c) Ch lat
25. Convergency is the
(a) Inclination between any two meridians.
(b) Angular difference between prime meridian and meridian of the place.
(c) Angular difference between the meridian and the parallel of latitude of the place.
26. Conversion angle is
(a) Half of Convergency
(b) Twice the angular difference between great circle and Rhumb line bearings.
(c) Ch Long * Sin of mean Lat
27. The Convergency at poles is the
(a) Ch long between the meridians
(b) Ch lat
(c) Cos of lat
28. What is the Convergency between A (48°30`S 28° 12`E ) and B(55° 00 10° 00E)
(a) 16.3°
(b) 7.2°
(c) 14.3°
29. The GC bearing of A from B is 310°, the RL Brg of A and B is 315°. What is the
Conversion angle?
(a) 5°
(b) 2½°
(c) 7½°
30. A’s position is 54° S 160° E, Convergency between A and B is 210°. If B
is due east of A and Sin of 54° is 0.8, what is the GC brg of B from A ?
(a) 111°
(b) 100½°
(c) 069°
31. An aircraft flying in ambient temp -27°C and Mach No. 0.7. What is the TAS ?
(a) 387
(b) 456
(c) 428
32. If an aircraft flying TAS 500 kts in ambient temp -30°, what is the Mach No .?
(a) 0.85
(b) 0.72
(c) 0.82
33. If track of an aircraft is 290 (T), Hdg (T) 293, Hdg (M) 298, Hdg (c) 296,
What are the drift, variation and Deviation?
(a) 3° S, 5° E and 2° E
(b) 3° P, 5° W and 2° E
(c) 3° S, 5° W and 2° E
34. Scale factor is
(a) The ratio of chart length to the reduced earth length
(b) The factor to multiply the scale to arrive at correct scale of the chart.
(c) Both (a) and (b) above
35. In a Mercator charts, the great circles appear as
(a) straight lines
(b) Curved lines, concave to the equator
(c) Curved lines, convex to the equator
36. In PSP charts, shapes get more distorted as
(a) Equator
(b) Large areas in high latitudes
(c) at poles
37. On a mercator chart, radio bearings are plotted
(a) after converting G/C radio brg into R/L brg by applying CA.
(b) directly as G/C bearing
(c) As rhumb line bearing after applying convergency angle.
38. In polar stereographic, a rhumb line appears as
(a) curve concave to nearer pole
(b) straight line
(c) curve concave to equator
39. In a graticule of PSP, the meridian appears as
(a) straight line
(b) curved line concave to pole
(c) curved line concave to equator
40. In a Mercator, the convergency is correct at
(a) Equator
(b) Poles
(c) Is zero on entire chart
41. The use of oblique Mercator is
(a) Production long great circle route at practically a constant scale.
(b) Polar areas average
(c) Both (a) and (b) above
42. All meridians and parallels intersect at 90° on
(a) The transverse Mercator has not an oblique Mercator
(b) The oblique Mercator not on transverse Mercator
(c) Both transverse and oblique Mercator.
43. A/C on Hdg 130°(T) in position 28°N 82°W obtains a relative brg 039 of an NDB . What
would you plot on Lamberts chart?
(a) 169°
(b) 219°
(c) 349°
44. If GD and GMT are 12 Mar 22h 02m 24s, give LD and LMT at longitude
96° 47' W
(a) 15h 35m 16s, 12 Mar
(b) 04 h 190 32s, 13 Mar
(c) 04h 29m 32s, 13 Mar
45. If LMT in position (28N 82'E) is 1200 h. What is the GMT ?
(a) 1730 h
(b) 0530 h
(c) 0630 h
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