Practice Solved Examples (5.1) - Graphical Radial Triangulation - Surveying and Geomatics

Practice: Solved Examples

Lesson 5.1Graphical Radial Triangulation

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the formula to calculate the scale of a photograph?
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Remember the role of altitude and focal length.
Question 2.
If the elevation of a terrain is 100 m and the aircraft is at 1500 m, what is the impact on the scale?
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Think about how elevation affects your calculations.
3Question 3.
What is the scale of a photograph taken from a height of 2000 m with a focal length of 50mm, if the terrain height is 500 m?
- 1:3013
- 1:4075
- 1:5000
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Use the scale formula correctly.
4Question 4.
True or False: The flying height has no effect on the scale.
- True
- False
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Recall how flying height and scale relate.
Question 5.
Given a line on a photograph that measures 15 cm and the corresponding ground distance is 300 m. What is the scale? If the terrain elevation is known to be 200 m with a focal length of 35 mm, calculate the flying height.
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Convert units and check calculations based on the height differences.
Question 6.
If an aerial photograph shows a distance of 5 cm corresponding to 100 m on the ground, find the height of the aircraft if the terrain elevation is 150 m and the focal length is 50 mm.
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Ensure you use the correct scale and rearrange the formula accurately.

4 more questions in this section. Enroll free to practise them all.