Vayudoot Aviation

1. The scale is correct on a transverse Mercator chart?

Along the datum meridian and meridians at 90° to it.

Along the great circle of tangency.

At the prime meridian.

2. On a Direct Mercator chart, meridians are?

Converging curved lines.

Parallel, equally spaced, vertical straight lines.

Parallel, equally spaced, horizontal straight lines.

3. On lamberts conical projection, the given scale is correct at _______ and convergence is correct at _________.

Latitude of origin, standard Parallels

Standard Parallels, latitude of origin.

Latitude of origin, latitude of origin

4. 1000 meters equals

1 nm

0.545 nm

0.545 km

5. Graticule is the network of meridians and parallels on

Earth

Maps

Both

6. On a direct Mercator projection, the distance measured between two meridians spaced 5° apart at latitude 60°N is 8 cm. The Scale of this chart at latitude 60°N is approximately?

1 : 2 000 000.

1 : 5 000 000.

1 : 3 500 000.

7. Maps indicate the details of the topography. Pilots can use this for

Dead reckoning navigation

Contact navigation

Instrument flying

8. The chart that is generally used for navigation in polar areas is based on a?

Stereographical projection.

Transverse Mercator.

Lamber's Conformal.

9. Which of the following statements best describes how scale varies on a Mercator chart?

It is correct on the standard parallels, but expands outside them, and contracts within them.

Expands directly with the secant of the latitude.

Expands as the secant (1/2 x co-latitude).

10. Contours are lines drawn on a map or chart joining

Places of equal elevation

Equal pressure

Equal variation.

11. On a Lambert Conformal chart the distance between meridians 5' apart along latitude 37° North is 9 cm. The scale of the chart at that parallel approximates?

1 : 4 000 000.

1 : 5 000 000.

1 : 3 500 000.

12. What type of projection is generally used for charts used for navigation in North and south polar areas?

Polar stereographical projection.

Direct Mercator.

Lambert's Conformal.

13. Which one of the following describes the appearance of rhumb lines, except meridians, on a polar stereographic chart

Approximately straight lines.

Curves concave to the pole.

Straight lines.

14. A rhumb line is a straight line. The applies to

Mercators

IMPP

Lamberts

15. On a Lambert Conformal conic chart great circle that are not meridians are?

Curves concave to the pole of projection.

Curves concave to the parallel of origin.

Straight lines within the standard parallels.

16. Map Distance = 13.2". Ans. ED = 350 nm. Find scale

- [SCALE = MD/ED = 13.2"/350NM = 13.2"/350×6.080×12 = 1 F =(25536000)÷13.2 = 1934545 SCALE = 4/1,934,545]

- [SCALE = MD/ED = 13.2"/350NM = 13.2"/350×6.080×12 = 1 F =(25536000)÷13.2 = 1934545 SCALE = 1/1,934,545]

17. On a Lambert conformal conic projection, with two standard parallels the scale is?

Correct only along the standard parallels.

Correct only at the poles.

Correct only along the parallel of origin.

18. On a map scale of 1: 2×106. How many km are represented by a line 4.2

- [SCALE = MD/ED = 1/2×106 = 4.2"/X2 X = 4.2"×2×106 = 8.4X106 X = 8.4×2.54×106/1×106 = 213.36 KM]

- [SCALE = MD/ED = 1/2×106 = 4.2"/X2 X = 4.2"×2×106 = 8.4X106 X = 8.4×2.54×106/1×106 = 216.36 KM]

19. Parallels of latitude, except the equator, are?

Complex curves.

Rhumb lines.

Great circle.

20. On a direct Mercator projection, at latitude 45° North, a certain length represents 70 NM. At latitude 30° North, the same length represents approximately?

45 nm.

75 nm.

86 nm.

21. Where is the convergency correct on a Transverse Mercator chart?

At the datum meridian and the Equator.

Only at the datum meridian.

Only at the Equator and poles.

22. On a Lambert conformal conic chart the convergence of the meridians is?

The same as the scale.

Most accurate at the standard parallels.

The same as earth convergency at the parallel of origin.

23. Radio Navigation charts (Jeppesen) uses:

Mercator's projection

Lamberts conformal conic projection

IMPP

24. On which of the following chart projections is it not possible to represent the north or south poles?

Lambert's Conical

Direct Mercator.

Polar Stereographic.

25. On the Mercator's chart

Distortion increases away from the Equator.

Parallels of latitude are not straight lines.

Distortion increases away from the Pole

26. The scale of a chart is shown as 1 : 1 million. This means that

1 c.m. on the chart represents 1 million centimeters on the Earth

1" on the chart equals 1 million inches on the Earth

Both.

27. On a Direct Mercator, rhumb lines are?

Curves concave to the nearest pole.

Curves convex to the nearest pole.

Straight lines.

28. Charts are used only for

Pola navigation.

Flying over seas

Dead reckoning navigation

29. On a map scale of 1:1×106. How many inches are represented by ground Distance of 400 km

- [SCALE = MD/ED = 1/1×106 = MD/400×3,280×12 MD = 15.74 INCHES ]

- [SCALE = MD/ED = 1/1×106 = MD/400×3,280×12 MD = 10.74 INCHES ]

30. On Jeppesen charts scale is given in following manner

All of the above

Representative fraction.

Graduated scale and statement in words

31. The norminal scale of a Lambert conformal conic chart is the?

Scale at the poles.

Scale at the standard parallels.

Scale at the parallel of origin.

32. Representation of high ground on a projection can be in the form of

Spot heights and Layer tinting

All the above.

Contours and form lines.

33. The scale on a Lambert's conformal conic chart?

Is constant.

Is constant along a parallel of latitude.

Is constant along a meridian of longitude.

34. On a Transverse Mercator chart, scale is exactly correct along the?

Meridian of tangency.

Prime meridian.

Standard latitudes.

35. A perfectly straight line on a Lamberts chart is?

A meridian of longitude.

A rhumb line.

A parallel of latitude.

36. The angular difference, on a Lambert conformal conic chart, between the arrival and departure track is equal to?

Secant of 1/2 latitude.

Map convergence.

Departure angle.

37. Meridians and parallel intersects at right angles. This applies to

Mercators

Lamberts

Both

38. On a mercator chart scale at 57°N=1

- [(A) 1/106 = SCALE AT EQUATOR / COST57° SCALE AT EQUATOR = 0.544/106 = 1/1,838,235 (B) SCALE AT 35° = 1/1,838,235 × 1/COS35 = 1/1,505,794 (C) SCALE AT 25°N = 1/1,838,235 × 1/COS25° = 1/ 1,666,006]

- [(A) 1/106 = SCALE AT EQUATOR / COST57° SCALE AT EQUATOR = 0.544/106 = 1/1,838,235 (B) SCALE AT 35° = 1/1,838,235 × 1/COS35 = 1/1,505,794 (C) SCALE AT 25°N = 1/1,838,235 × 1/COS25° = 9/ 1,666,006]

- [(A) 1/106 = SCALE AT EQUATOR / COST57° SCALE AT EQUATOR = 0.544/106 = 1/1,838,235 (B) SCALE AT 35° = 1/1,838,235 × 1/COS35 = 1/1,505,794 (C) SCALE AT 25°N = 1/1,838,235 × 1/COS25° = 5/ 1,666,006]

39. At 60°N the scale of a direct Mercator chart is 1 : 3000 000. What is the scale at the equator?

1 : 6 000 000.

1 : 5 000 000.

1 : 12 000 000.

40. While measuring track at Lambert conical projection protractor is to be placed at

Latitude of departure

Latitude of arrival

Mid way longitude

41. What is the value of the convergence factor on a polar stereographic chart?

1.0.

2.0.

1.5.

42. The scale on a Lamberts projection is correct only along

The end parallels' of latitude and 2degs. on either side of the central meridian.

The standard paraliels

The equator

43. Which one of the following statements is correct concerning the appearance of great circles, with the exception of meridians, on a polar stereographic chart whose tangency is at the pole?

The higher the latitude the closer they approximate to a straight line.

Never approximate to straight lines.

The lower the latitude the closer they approximate to straight line.

44. Nautical mile is more than a statute mile. Statute mile is more than a kilometer

Only kilometer is more than a nautical mile.

Both statements are correct.

Only statute mile is more than a nautical mile.

45. Map Distance + 10". Earth Distance = 120 nm. Find scale

- [SCALE = 1/F = MAP DISTANCE/EARTH DISTANCE = 10"/120NM = 10'/120×6.080×12 = 10/8,755.200 = 1/8.77.520]

- [SCALE = 1/F = MAP DISTANCE/EARTH DISTANCE = 10"/120NM = 10'/120×6.080×12 = 10/8,755.200 = 3/8.77.520]

46. In an ortho morphic projection

Meridians and parallels intersect at right angles

Meridians and parallels are straight lines

Both the above

47. On a map cm represent earth Distance of 200 statute mile. Find scale of map

- [SCALE = MD/ED = 3CM/200NM = 3CM/200×5,280×12×2.54CM = 1/10,728,960]

- [SCALE = MD/ED = 3CM/200NM = 3CM/200×5,280×12×2.54CM = 2/10,728,960]

48. In which of the following projections will a plane surface touch the reduced earth at one of the poles?

Stereographic.

Direct Mercator.

Transverse Mercator.

49. On a Lambert conformal conic chart, the distance between parallels of latitude spaced the same number of degrees apart?

Reduces between and expands outside the standard parallels.

Increases between and reduces outside of the standard parallels.

Is constant between the standard parallels.

50. Which one of the following, concerning great circles on Direct Mercator chart, is correct?

Curves concave to the nearest pole.

With the exception of meridians and the equator, they are curves concave to the equator.

Straight lines.

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