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Q: Chain survey is mainly done using triangulation technique because:
  • A. it is needed to form a well-conditioned triangle
  • B. in triangulation, the survey work can be checked using check line
  • C. triangles reduce the error by 30%
  • D. a triangle is the only simple figure that can be plotted from the length of its sides measured in field
Correct Answer: Option D - The principle of chain surveying is triangulation. Triangulation means to provide a framework consisting of number of connected triangle. • Triangle is the only simple figure that can be plotted from lengths of the sides measured in the field. • All the triangle should be well-conditioned.
D. The principle of chain surveying is triangulation. Triangulation means to provide a framework consisting of number of connected triangle. • Triangle is the only simple figure that can be plotted from lengths of the sides measured in the field. • All the triangle should be well-conditioned.

Explanations:

The principle of chain surveying is triangulation. Triangulation means to provide a framework consisting of number of connected triangle. • Triangle is the only simple figure that can be plotted from lengths of the sides measured in the field. • All the triangle should be well-conditioned.