MPPSC – 2015 (Paper-II Mains)
⭕ A. Orientation
⭕ B. Radiation
⭕ C. Intersection
⭕ D. Resection
📚 Explanation:
The process of identifying the position of the instrument station (plane table) using known plotted points on the map is called resection.
🔹 In resection, the location of the plane table is fixed by drawing rays from plotted points to the instrument location.
🔹 Common methods include two-point and three-point resection.
🔹 This method is crucial when the surveyor is unsure of their current position but has access to known landmarks.
The process of identifying the position of the instrument station (plane table) using known plotted points on the map is called resection.
🔹 In resection, the location of the plane table is fixed by drawing rays from plotted points to the instrument location.
🔹 Common methods include two-point and three-point resection.
🔹 This method is crucial when the surveyor is unsure of their current position but has access to known landmarks.
👉 Therefore, the correct answer is: D. Resection
Key Concepts of Resection in Surveying:
- Used to locate current position on map using known points
- Two-point and three-point methods are common
- Essential in plane table and theodolite surveying
- Relies on intersecting back rays from plotted stations
- Not suitable for inaccessible point plotting
