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Q: Triangulation surveys are carried out for locating
  • A. Control points for surveys of large areas
  • B. Control points for photogrammetric surveys
  • C. Engineering works, i.e., terminal points of long tunnels, bridge abutments, etc.
  • D. All the above
Correct Answer: Option D - Application of triangulation– 1. Establishing accurately located control points for plane and geodetic surveys of large areas. 2. Establishing accurately located control points in connection with aerial surveying. 3. Accurate location of engineering projects such as center lines, terminal points and shaft for long tunnels and center lines and abutments for long span bridges.
D. Application of triangulation– 1. Establishing accurately located control points for plane and geodetic surveys of large areas. 2. Establishing accurately located control points in connection with aerial surveying. 3. Accurate location of engineering projects such as center lines, terminal points and shaft for long tunnels and center lines and abutments for long span bridges.

Explanations:

Application of triangulation– 1. Establishing accurately located control points for plane and geodetic surveys of large areas. 2. Establishing accurately located control points in connection with aerial surveying. 3. Accurate location of engineering projects such as center lines, terminal points and shaft for long tunnels and center lines and abutments for long span bridges.