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If in an old map the line PQ was drawn to a magnetic bearing of 9° 30’ and the magnetic declination at the time being 3° West. If the present magnetic declination is 5° 30’ West, then the present magnetic bearing of the line PQ will be?
  • a)
     7°
  • b)
  • c)
    12°
  • d)
    18°
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If in an old map the line PQ was drawn to a magnetic bearing of 9°...
Magnetic bearing of line PQ = 9° 30’
Magnetic Declination = 3° W
True bearing of line PQ = M.B – Declination
= 9° 30’ – 3°
Present Magnetic Bearing = TB + Present Declination = 6° 30’ + 5° 30’ = 12°
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Most Upvoted Answer
If in an old map the line PQ was drawn to a magnetic bearing of 9°...
°, it means that the line PQ was drawn using the magnetic north as a reference point and the angle between the line PQ and the magnetic north was 9°. This angle is also known as the magnetic declination or magnetic variation. However, it is important to note that the magnetic declination changes over time and location, so the value of 9° may not be accurate for the current time and location.
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If in an old map the line PQ was drawn to a magnetic bearing of 9° 30’ and the magnetic declination at the time being 3° West. If the present magnetic declination is 5° 30’ West, then the present magnetic bearing of the line PQ will be?a)7°b)1°c)12°d)18°Correct answer is option 'C'. Can you explain this answer?
Question Description
If in an old map the line PQ was drawn to a magnetic bearing of 9° 30’ and the magnetic declination at the time being 3° West. If the present magnetic declination is 5° 30’ West, then the present magnetic bearing of the line PQ will be?a)7°b)1°c)12°d)18°Correct answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about If in an old map the line PQ was drawn to a magnetic bearing of 9° 30’ and the magnetic declination at the time being 3° West. If the present magnetic declination is 5° 30’ West, then the present magnetic bearing of the line PQ will be?a)7°b)1°c)12°d)18°Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If in an old map the line PQ was drawn to a magnetic bearing of 9° 30’ and the magnetic declination at the time being 3° West. If the present magnetic declination is 5° 30’ West, then the present magnetic bearing of the line PQ will be?a)7°b)1°c)12°d)18°Correct answer is option 'C'. Can you explain this answer?.
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