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Q: In plane surveying, level lines are considered as _______ and plumb lines are considered as _____.
  • A. parallel; straight
  • B. straight; straight
  • C. parallel; parallel
  • D. straight; parallel
Correct Answer: Option D - Plane survey–In this type of surveying, the mean surface of the earth is considered as a plane and the spheroidal shape is neglected. • All triangles formed by survey lines are considered as plane triangles. • The level line is taken as straight and all plumb lines are considered to be parallel. • Plane surveying is done for smaller areas in consideration.
D. Plane survey–In this type of surveying, the mean surface of the earth is considered as a plane and the spheroidal shape is neglected. • All triangles formed by survey lines are considered as plane triangles. • The level line is taken as straight and all plumb lines are considered to be parallel. • Plane surveying is done for smaller areas in consideration.

Explanations:

Plane survey–In this type of surveying, the mean surface of the earth is considered as a plane and the spheroidal shape is neglected. • All triangles formed by survey lines are considered as plane triangles. • The level line is taken as straight and all plumb lines are considered to be parallel. • Plane surveying is done for smaller areas in consideration.