Surveying – Multiple Choice Questions (MCQs)

1. 25. What is the "least count" of a vernier scale?

   • A. The smallest division on the main scale
   • B. The smallest division that can be read with the help of the vernier
   • C. The number of divisions on the vernier scale
   • D. The length of the vernier scale

2. 26. The "ranging" operation in chain surveying is performed to:

   • A. Measure angles
   • B. Mark points on the ground along a straight line
   • C. Measure elevations
   • D. Plot the map

3. 27. What is a "tacheometer"?

   • A. A surveying instrument used for measuring distances and elevations indirectly
   • B. A device for measuring angles
   • C. A type of chain
   • D. A levelling staff

4. 28. The principle of "reciprocal levelling" is used to eliminate:

   • A. Errors due to atmospheric refraction
   • B. Errors due to curvature of earth
   • C. Errors due to line of collimation not being perfectly horizontal
   • D. All of the above

5. 29. What is a "total station"?

   • A. An instrument that measures only angles
   • B. An electronic/optical instrument used for angle measurements and distance measurements
   • C. An instrument that measures only distances
   • D. An instrument that measures only elevations

6. 30. The process of reducing field measurements to true lengths and bearings is called:

   • A. Plotting
   • B. Calculation
   • C. Traverse adjustment
   • D. Field book entry

7. 31. What is "GPS" in surveying?

   • A. Global Positioning System
   • B. Geographical Plotting Software
   • C. Ground Penetrating Sonar
   • D. General Positioning Survey

8. 32. The "triaxial test" in soil mechanics is related to:

   • A. Soil classification
   • B. Soil compaction
   • C. Soil strength
   • D. Soil permeability

9. 33. What is "remote sensing" in surveying?

   • A. Direct measurement on the ground
   • B. Acquiring information about an object or phenomenon without making physical contact with it
   • C. Using a drone for photography
   • D. Collecting data from a distance using sensors

10. 34. The "geoid" is defined as:

    • A. The true shape of the Earth
    • B. A hypothetical surface of constant gravity that is approximately mean sea level
    • C. A perfectly smooth sphere
    • D. A flat plane

11. 35. What is "astronomical surveying"?

    • A. Surveying using only stars
    • B. Surveying that involves observations of celestial bodies to determine absolute positions
    • C. Surveying done at night
    • D. Surveying related to astrology

12. 36. The "compass rule" and "transit rule" are methods for:

    • A. Calculating areas
    • B. Adjusting a traverse
    • C. Determining elevations
    • D. Measuring angles