Civil Engineering MCQAE Level Civil Engineering
GPS positioning uses:
SurveyingTotal Station GPSEASY
Choose the correct answer
A
Laser ranging to satellites
B
Pseudorange and carrier phase measurements to multiple satellites (≥4) for 3D position and time
C
Only 2 satellites
D
Compass and dead reckoning
Correct Answer
B. Pseudorange and carrier phase measurements to multiple satellites (≥4) for 3D position and time
Why is this the answer?
GPS: receiver measures travel time of signals from ≥4 satellites → 4 unknowns (X,Y,Z,time). Pseudorange accuracy ~10m; carrier phase (differential/RTK) → cm-level. Datum: WGS-84.
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:
Practice more Civil Engineering questions
This MCQ belongs to Magic Mock Test Series — WBPSC AE Civil (Preliminary). Full tests include timed attempts, rank comparison and subject-wise analysis.