Which one statements is NOT correct - Trigonometric leveling used in geodetic surveying

Question-Answer:

Which one of the following statements is NOT correct?

• (a) Trigonometric levelling has never been used in geodetic surveys
  
• (b) The differences in elevation are determined indirectly by trigonometric levelling
  
• (c) The electronic distance measurement devices can be used for measuring the vertical distances
  
• (d) The combined effects of curvature and refraction produce vertical readings that are slightly too short

Ans. (a)

1
Trigonometric leveling is used in geodetic surveying, particularly in areas where traditional leveling methods are not feasible or practical, such as in mountainous regions or areas with dense vegetation.

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