DGCA Air Navigation: Circles & Distances Questions
194 exam-style Circles & Distances questions for the DGCA Air Navigationpaper (CPL & ATPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.
- Q1
A great circle track joint position A (59°S 141°W) and B (61°S 148°W). What is the difference between the great circle track at A and B?
- AIt increases by 6°.
- BIt decreases by 6°.
- CIt increases by 3°.
- DIt decreases by 3°.
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Correct answer: A. It increases by 6°.
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- Q2
Given: Position A 45° N, ?°E, Poition B 45° N 45° 15'E Distance A-B=280 NM, B is to the East of A, What is the longitude of position A?
- A38°39'E.
- B49°57'E.
- C51°51'E.
- D40°33'E.
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Correct answer: A. 38°39'E.
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- Q3
A Lambert conformal conic chart has a constant of the cone of 0.75. The initial course of a straight-line track drawn on this chart from A (40°N 050°W) to B is 043°(T) at A; course at B is 055°(T). What is the longitude of B?
- A34°W.
- B36°W.
- C38°W.
- D41°W.
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Correct answer: A. 34°W.
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- Q4
What is the great circle track (measured from the starting position) from 70°S 030°W, to 70°S 060°E?
- A048°T.
- B090°T.
- C132°T.
- D228°T.
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Correct answer: C. 132°T.
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- Q5
What is the longitude of a position 6 NM to the east of 58° 42'N 094° 00'W?
- A093° 53.1'W.
- B094° 12.0'W.
- C093° 48.5'W.
- D093° 54.9'W
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Correct answer: C. 093° 48.5'W.
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- Q6
As the INS position of the departure aerodrome, coordinates 35° 32.7'N 139° 46.3'W are input insted of 35° 32.7'N 139 46.3'E. When the aircraft subsequently passes point 52° N 180°W, the longitude value shown on the INS will be?
- A080° 27.4'W
- B099° 32.6'W
- C099° 32.6'W
- D080° 27.4'W
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Correct answer: B. 099° 32.6'W
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- Q7
An aircraft files the following rhumb line tracks and distances from position 04°00'N 030° 00'W: 600 NM South, then 600 NM East, then 600 NM North, then 600 NM West. The final position of the aircraft is?
- A04°00'N 030° 00'W.
- B03°58'N 030° 02'W.
- C04°00'N 029° 55'W.
- D04°00'N 030° 02'W.
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Correct answer: C. 04°00'N 029° 55'W.
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- Q8
Which of the following differences In latitude will produce the greatest difference between the initial great circle trackand the mean great circle track, between two points, which are separated by 10° change of longitude?
- A30°S and 25°S.
- B30°S and 30°N.
- C60°N and 55°N.
- D60°N and 60°S.
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Correct answer: C. 60°N and 55°N.
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- Q9
What is the final position after the following rhumb line tracks and distances have been followed from position 60°00'N 030° 00'W? South for 3600 NM, East for 3600 NM, North for 3600 NM, West for 3600 NM?
- A59° 00'N 090° 00'W.
- B60° 00'N 090° 00'W.
- C60° 00'N 030° 00'E.
- D59° 00'N 060° 00'W.
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Correct answer: B. 60° 00'N 090° 00'W.
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- Q10
The Great Circle bearing of 'B' (70° S 060° E), from 'A' (70° S 030°W), is approximately?
- A150° (T).
- B090° (T).
- C315° (T).
- D135° (T).
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Correct answer: D. 135° (T).
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- Q11
An aircraft at position 60° N 005° W tracks 090°(T) for 315 km. On completion of the flight the longitude will be?
- A002° 10'W.
- B000° 15'E.
- C000° 40'W.
- D002° 10'E.
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Correct answer: C. 000° 40'W.
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- Q12
An aircraft autopilot is coupled to the INS steering from Waypoint 1 at 60°N 040°W. to Waypoint 2 at 60°N 030°W. What is the approximate latitude of the aircraft on passing 35°W?
- A60°05'N.
- B60°19'N.
- C60°30'N.
- D59°15'N.
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Correct answer: A. 60°05'N.
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