GWSSB AAE 2015
⭕ A. Theodolite survey
⭕ B. Plane table survey
⭕ C. Chain survey
⭕ D. Compass survey
📚 Explanation:
The Plane Table Survey is a graphical method of surveying in which both field observations and plotting are carried out simultaneously.
🔹 It enables immediate preparation of maps in the field, avoiding delays of office work.
🔹 Particularly useful for small-scale surveys and ideal in areas with good visibility and access.
🔹 It is simpler and cheaper compared to theodolite surveying.
🔹 Common sizes of plane tables used are 45×60 cm and 60×75 cm.
The Plane Table Survey is a graphical method of surveying in which both field observations and plotting are carried out simultaneously.
🔹 It enables immediate preparation of maps in the field, avoiding delays of office work.
🔹 Particularly useful for small-scale surveys and ideal in areas with good visibility and access.
🔹 It is simpler and cheaper compared to theodolite surveying.
🔹 Common sizes of plane tables used are 45×60 cm and 60×75 cm.
👉 Therefore, the correct answer is: B. Plane table survey
Key Points on Plane Table Surveying:
- Field work and plotting done simultaneously
- Enables immediate map preparation without office reduction
- Most suitable for small area surveys
- Simple, economical, and faster than other methods like theodolite survey
- Best when speed and visual access are critical