In plane table surveying, the method of 'intersection' is employed to locate:
Choose the correct answer
The instrument station when its position is unknown
Inaccessible points visible from two already-plotted instrument stations
Detail points by measuring distance and direction from a known station
The station position using three known plotted control points
Correct Answer
B. Inaccessible points visible from two already-plotted instrument stations
Why is this the answer?
Intersection: two rays are drawn from two known plotted stations to an inaccessible point. Their intersection on the paper locates it without measuring distance. Radiation = known station + distance + direction. Resection = finding unknown station from known plotted points.
Related Surveying MCQs
More solved Surveying questions for AE/JE Civil Engineering exams.
- A 'Digital Elevation Model' (DEM) is used in GIS for:
- 'Contour interval' selection for a topographic survey depends on:
- The 'photogrammetric control' (ground control points) in aerial survey are required for:
- The 'EDM' (Electronic Distance Measurement) instrument measures distances using:
- The 'photogrammetric stereomodel' from two overlapping aerial photos allows...
- The 'corrections' applied to measured chain/tape lengths include all EXCEPT:
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