Surveying – Multiple Choice Questions (MCQs)

1. 97. The "magnetic bearing" is measured with respect to:

   • A. True meridian
   • B. Magnetic meridian
   • C. Assumed meridian
   • D. Grid meridian

2. 98. What is a "grid meridian"?

   • A. A line parallel to the true meridian
   • B. A line parallel to a central meridian of a projection system
   • C. A line parallel to the magnetic meridian
   • D. A curved line

3. 99. What is the "plot scale"?

   • A. The scale at which the map is drawn
   • B. The scale of the actual ground
   • C. The scale of the instrument
   • D. The scale of the paper

4. 100. The "accuracy" of a survey refers to:

   • A. The precision of measurements
   • B. How close the measurements are to the true values
   • C. The consistency of measurements
   • D. The repeatability of measurements

5. 101. What is "precision" in surveying?

   • A. How close the measurements are to the true values
   • B. The consistency and repeatability of measurements
   • C. The speed of measurement
   • D. The cost of measurement

6. 102. The "allowable error" in surveying is usually expressed as:

   • A. A fixed value
   • B. A percentage
   • C. A ratio or a specific numerical limit
   • D. An angle

7. 103. What is "chain correction"?

   • A. Correction for temperature
   • B. Correction for sag
   • C. Correction for incorrect length of chain
   • D. All of the above

8. 104. The "normal tension" for a tape is the tension at which:

   • A. The sag correction is zero
   • B. The length of the tape is its nominal length
   • C. The temperature correction is zero
   • D. The slope correction is zero

9. 105. What is "profile levelling"?

   • A. Levelling along a single line
   • B. Levelling along a series of lines to determine the elevation along a central line
   • C. Levelling a large area
   • D. Levelling for establishing control points

10. 106. The "rise and fall method" and "height of instrument method" are used in:

    • A. Traversing
    • B. Levelling
    • C. Triangulation
    • D. Tacheometry

11. 107. What is "datum" in surveying?

    • A. A starting point
    • B. A reference surface from which elevations are measured
    • C. A type of instrument
    • D. A survey station