UPPSC State Engg. A.E. 2004 (II) / UKPSC State Engg. A.E. Paper (II) 2013
⭕ A. Resection
⭕ B. Orientation
⭕ C. Intersection
⭕ D. Radiation
📚 Explanation:
The operation which **must** be carried out in Plane Table Surveying is Orientation.
🔹 **Orientation** means keeping the plane table parallel to the direction it held at the first station.
🔹 This ensures that all plotted lines remain parallel to their corresponding ground lines.
Other Methods:
🔸 Resection: Used to locate the instrument station by sighting known points.
🔸 Intersection: Used to locate distant points by sighting from two known stations.
🔸 Radiation: Rays are drawn from a known station to plot surrounding points; suitable for small areas.
The operation which **must** be carried out in Plane Table Surveying is Orientation.
🔹 **Orientation** means keeping the plane table parallel to the direction it held at the first station.
🔹 This ensures that all plotted lines remain parallel to their corresponding ground lines.
Other Methods:
🔸 Resection: Used to locate the instrument station by sighting known points.
🔸 Intersection: Used to locate distant points by sighting from two known stations.
🔸 Radiation: Rays are drawn from a known station to plot surrounding points; suitable for small areas.
👉 Therefore, the correct answer is: B. Orientation
Key Points on Plane Table Surveying:
- Orientation: Ensures proper alignment of table with ground directions.
- Resection: Used to determine instrument station.
- Radiation: Suitable for small visible areas.
