Karnataka PSC AE – 2015 (Paper-II)
⭕ A. Traversing
⭕ B. Resection
⭕ C. Radiation
⭕ D. Intersection
📚 Explanation:
The intersection method is commonly used in plane table surveying for locating points that are inaccessible or dangerous to reach.
🔹 In this method, the point is located by drawing rays from two different instrument stations toward the target point.
🔹 The point where these rays intersect on the plane table sheet represents the actual position of the inaccessible point.
🔹 This method requires that both stations are plotted on the sheet and that the angles to the point are observed accurately.
The intersection method is commonly used in plane table surveying for locating points that are inaccessible or dangerous to reach.
🔹 In this method, the point is located by drawing rays from two different instrument stations toward the target point.
🔹 The point where these rays intersect on the plane table sheet represents the actual position of the inaccessible point.
🔹 This method requires that both stations are plotted on the sheet and that the angles to the point are observed accurately.
👉 Therefore, the correct answer is: D. Intersection
Key Features of the Intersection Method:
- Best suited for locating inaccessible points
- Uses two known stations and lines of sight
- Commonly applied in plane table surveying
- Does not require physical access to the target point
- Requires accurate plotting and angular observations
