WBPSC POLY LECT. 2019
⭕ A. Tachometry
⭕ B. Trigonometrical levelling
⭕ C. Plane table surveying
⭕ D. Theodolite surveying
📚 Explanation:
Plane table surveying is a method in which both field observations and plotting are done simultaneously on the field.
🔹 As a result, it requires the least amount of office work compared to other methods such as theodolite surveying or trigonometrical levelling, where significant post-field calculations and plotting are needed.
🔹 It is particularly useful for small and medium-sized projects where high precision is not the prime requirement.
Plane table surveying is a method in which both field observations and plotting are done simultaneously on the field.
🔹 As a result, it requires the least amount of office work compared to other methods such as theodolite surveying or trigonometrical levelling, where significant post-field calculations and plotting are needed.
🔹 It is particularly useful for small and medium-sized projects where high precision is not the prime requirement.
👉 Therefore, the correct answer is: C. Plane table surveying
Key Concepts on Surveying Methods:
- Plane table surveying: Fieldwork and plotting done together
- Tachometry: Uses stadia methods, moderate office work
- Trigonometrical levelling: Involves complex angle and height calculations
- Theodolite surveying: High precision, but requires extensive office processing
- Choose method based on required accuracy and scale of work
