BCE Surveying & Geomatics 1 — Questions and Answers
Question 1: Which type of leveling uses a level instrument to measure differences in elevation between points?
- Trigonometric leveling
- Barometric leveling
- Differential leveling (Correct answer)
- Stadia leveling
Correct answer: Differential leveling
Differential leveling uses a leveling instrument and graduated rods to determine elevation differences by reading backsights and foresights.
Question 2: In surveying, the term 'bearing' refers to which measurement?
- Horizontal distance between two points
- Vertical angle to a target
- Direction of a line measured from north or south (Correct answer)
- Elevation of a survey point
Correct answer: Direction of a line measured from north or south
A bearing is the direction of a survey line expressed as an angle measured from either north or south, toward east or west, always less than 90°.
Question 3: What does GPS stand for in the context of modern surveying?
- Ground Positioning Survey
- Global Positioning System (Correct answer)
- Geodetic Projection System
- Geographic Point Scan
Correct answer: Global Positioning System
GPS (Global Positioning System) is a satellite-based navigation system that provides precise location and time information anywhere on Earth.
Question 4: The closing error in a traverse survey is corrected using which method?
- Least squares adjustment or Bowditch (compass) rule (Correct answer)
- Trigonometric interpolation
- Barometric correction
- Magnetic declination adjustment
Correct answer: Least squares adjustment or Bowditch (compass) rule
Closing errors in a traverse are distributed using the Bowditch (compass) rule, which distributes error proportionally to the length of each side, or by least squares adjustment.
Question 5: Which instrument uses electronic distance measurement (EDM) combined with an angle-measuring theodolite?
- Level
- Plane table
- Total station (Correct answer)
- Clinometer
Correct answer: Total station
A total station integrates an electronic distance measurement device with a digital theodolite, allowing simultaneous measurement of angles and distances.
Question 6: Contour lines on a topographic map that are close together indicate:
- Flat terrain
- Steep terrain (Correct answer)
- A valley
- A ridge
Correct answer: Steep terrain
Closely spaced contour lines represent steep slopes because the elevation changes rapidly over a short horizontal distance.
BCE Surveying & Geomatics 1
Which type of leveling uses a level instrument to measure differences in elevation between points?