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Q: Triangulation system is preferred for
  • A. establishing ground control points for aerial surveying
  • B. location of center lines and other important points for any engineering projects such as tunnels and bridges
  • C. establishing control points for larger area of surveying
  • D. All of these
Correct Answer: Option D - Triangulationsurvey- In triangulation survey, the system consists of a number of interconnected triangles in which the length of only one line is called the base line & angle of the triangle are measured very accurately. Purpose:– • To establish accurate control points for plane & geodetic survey of large areas. • To establish accurate ground control points for photogrammetry survey of large area. • For various engineering projects it is required to build up accurate horizontal control. • Location of center lines and other important points for any engineering projects such as tunnels and bridges
D. Triangulationsurvey- In triangulation survey, the system consists of a number of interconnected triangles in which the length of only one line is called the base line & angle of the triangle are measured very accurately. Purpose:– • To establish accurate control points for plane & geodetic survey of large areas. • To establish accurate ground control points for photogrammetry survey of large area. • For various engineering projects it is required to build up accurate horizontal control. • Location of center lines and other important points for any engineering projects such as tunnels and bridges

Explanations:

Triangulationsurvey- In triangulation survey, the system consists of a number of interconnected triangles in which the length of only one line is called the base line & angle of the triangle are measured very accurately. Purpose:– • To establish accurate control points for plane & geodetic survey of large areas. • To establish accurate ground control points for photogrammetry survey of large area. • For various engineering projects it is required to build up accurate horizontal control. • Location of center lines and other important points for any engineering projects such as tunnels and bridges