PROJECTIONS - Dgca question bank for pilots

Results

#1. Radio Navigation charts (Jeppesen) uses:

Lamberts conformal conic projection

Mercator's projection

IMPP

#2. A rhumb line is a straight line. The applies to

Mercators

Lamberts

IMPP.

#3. Meridians and parallel intersects at right angles. This applies to

Mercators

Lamberts

Both.

#4. On the Mercator’s chart,

Distortion increases away from the Equator.

Distortion increases away from the Pole

Parallels of latitude are not straight lines.

#5. The scale on a Lamberts projection is correct only along

The standard paraliels

The equator

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

#6. Charts are used only for:

Flying over seas

Dead reckoning navigation

Pola navigation.

#7. In an ortho morphic projection,

Meridians and parallels intersect at right angles

Meridians and parallels are straight lines

Both the above

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

Lamber's Conformal.

Transverse Mercator.

Stereographical projection.

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

The same as earth convergency at the parallel of origin.

The same as the scale.

Most accurate at the standard parallels.

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

Correct only along the parallel of origin.

Correct only at the poles.

Correct only along the standard parallels.

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

Meridian of tangency.

Prime meridian.

Standard latitudes.

#12. On lamberts conical projection, the given scale is correct at _ and convergence is correct at ___.

Latitude of origin, latitude of origin

Latitude of origin, standard Parallels

Standard Parallels, latitude of origin.

#13. While measuring track at Lambert conical projection protractor is to be placed at:

Latitude of departure

Latitude of arrival

Mid way longitude

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

Departure angle.

Map convergence.

Secant of 1/2 latitude.

#15. On a Direct Mercator chart, meridians are?

Parallel, equally spaced, horizontal straight lines.

Converging curved lines.

Parallel, equally spaced, vertical straight lines.

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

Polar Stereographic.

Direct Mercator.

Lambert's Conical

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

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

Straight lines.

Curves concave to the nearest pole.

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

Increases between and reduces outside of the standard parallels.

Reduces between and expands outside the standard parallels.

Is constant between the standard parallels.

#19. 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.

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

Never approximate to straight lines.

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

Straight lines.

Curves concave to the pole.

Approximately straight lines.

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

2.0.

1.5.

1.0.

#22. On a Direct Mercator, rhumb lines are?

Straight lines.

Curves concave to the nearest pole.

Curves convex to the nearest pole.

#23. A perfectly straight line on a Lamberts chart is?

A parallel of latitude.

A rhumb line.

A meridian of longitude.

#24. 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).

#25. 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 : 3 500 000.

1 : 5 000 000.

1 : 4 000 000.

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

At the datum meridian and the Equator.

Only at the Equator and poles.

Only at the datum meridian.

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

Stereographic.

Direct Mercator.

Transverse Mercator.

#28. 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.

#29. The scale is correct on a transverse Mercator chart?

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

At the prime meridian.

Along the great circle of tangency.

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

Scale at the standard parallels.

Scale at the parallel of origin.

Scale at the poles.

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

Lambert's Conformal.

Polar stereographical projection.

Direct Mercator.

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

Curves concave to the pole of projection.

Straight lines within the standard parallels.

Curves concave to the parallel of origin.

#33. Parallels of latitude, except the equator, are?

Rhumb lines.

Complex curves.

Great circle.

#34. On Jeppesen charts scale is given in following manner:

Representative fraction.

Graduated scale and statement in words

All of the above

#35. Nautical mile is more than a statute mile. Statute mile is more than a kilometer.

Both statements are correct.

Only kilometer is more than a nautical mile.

Only statute mile is more than a nautical mile.

#36. 1000 meters equals:

1 nm

0.545 nm

0.545 km

#37. Contours are lines drawn on a map or chart joining

Places of equal elevation

Equal pressure

Equal variation.

#38. Maps indicate the details of the topography. Pilots can use this for:

Contact navigation

Instrument flying

Dead reckoning navigation

#39. Graticule is the network of meridians and parallels on:

Earth

Maps

Both

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

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

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

Both.

#41. Representation of high ground on a projection can be in the form of:

Contours and form lines.

Spot heights and Layer tinting

All the above.

#42. Map Distance = 10?. Earth Distance = 120 nm. Find scale.

#43. Map Distance = 13.2?. ED = 350 nm. Find scale

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

CHECK ANSWER

Scale = MD/ED = 3cm/200nm = 3cm/200×5,280×12×2.54cm = 1/10,728,960

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

CHECK ANSWER

Scale = MD/ED = 1/2×106 = 4.2″/x2 X = 4.2″×2×106 = 8.4×106 X = 8.4×2.54×106/1×106 = 213.36 km

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

CHECK ANSWER

Scale = MD/ED = 1/1×106 = MD/400×3,280×12 MD = 15.74 inches

#47.

CHECK ANSWER

#48. 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 : 3 500 000.

1 : 5 000 000.

1 : 2 000 000.

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

86 nm.

75 nm.

45 nm.

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

1 : 5 000 000.

1 : 6 000 000.

1 : 12 000 000.

Finish

Results

#1. Radio Navigation charts (Jeppesen) uses:

#2. A rhumb line is a straight line. The applies to

#3. Meridians and parallel intersects at right angles. This applies to

#4. On the Mercator’s chart,

#5. The scale on a Lamberts projection is correct only along

#6. Charts are used only for:

#7. In an ortho morphic projection,

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

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

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

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

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

#13. While measuring track at Lambert conical projection protractor is to be placed at:

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

#15. On a Direct Mercator chart, meridians are?

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

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

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

#19. 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?

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

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

#22. On a Direct Mercator, rhumb lines are?

#23. A perfectly straight line on a Lamberts chart is?

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

#25. 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?

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

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

#28. The scale on a Lambert’s conformal conic chart?

#29. The scale is correct on a transverse Mercator chart?

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

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

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

#33. Parallels of latitude, except the equator, are?

#34. On Jeppesen charts scale is given in following manner:

#35. Nautical mile is more than a statute mile. Statute mile is more than a kilometer.

#36. 1000 meters equals:

#37. Contours are lines drawn on a map or chart joining

#38. Maps indicate the details of the topography. Pilots can use this for:

#39. Graticule is the network of meridians and parallels on:

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

#41. Representation of high ground on a projection can be in the form of:

#42. Map Distance = 10?. Earth Distance = 120 nm. Find scale.

#43. Map Distance = 13.2?. ED = 350 nm. Find scale

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

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

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

#47.

#48. 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?

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

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

#12. On lamberts conical projection, the given scale is correct at _ and convergence is correct at ___.