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  • Question

  • Which one of the following statements is correct?


  • Options
  • A. when the axes of rotation of the graduated circle and the verniers are not coincident, the instrument possesses eccentricity
  • B. the mean of the readings of the two verniers gives correct reading free from the eccentricity
  • C. one vernier may be used if the readings of two verniers differ by a constant
  • D. all the above.

  • Correct Answer
  • all the above. 

    • Surveying problems

    Search Results

    • 1. Correction per chain length of 100 links along a slope having a rise of 1 unit in n horizontal units, is

    • Options
    • A.
    • B. 100 n2
    • C.
    • D. .
      • Discuss
    • 2. The approximate formula for radial or perpendicular offsets from the tangent, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. Short offsets are measured with

    • Options
    • A. an ordinary chain
    • B. an invar tape
    • C. a metallic tape
    • D. a steel tape.
      • Discuss
    • 4. The line of collimation method of reduction of levels, does not provide a check on

    • Options
    • A. intermediate sights
    • B. fore sights
    • C. back sights
    • D. reduced levels.
      • Discuss
    • 5. Chain surveying is well adopted for

    • Options
    • A. small areas in open ground
    • B. small areas with crowded details
    • C. large areas with simple details
    • D. large areas with difficult details.
      • Discuss
    • 6. Prolongation of chain line across an obstruction in chain surveying, is done by

    • Options
    • A. making angular measurements
    • B. drawing perpendiculars with a chain
    • C. solution of triangles
    • D. all the above.
      • Discuss
    • 7. Bergchrund is a topograhical feature in

    • Options
    • A. plains
    • B. water bodies
    • C. hills
    • D. glaciated region
      • Discuss
    • 8. To avoid large centering error with very short legs, observations are generally made

    • Options
    • A. to chain pins
    • B. by using optical system for centering the theodolite
    • C. to a target fixed on theodolite tripod on which theodolite may be fitted easily
    • D. all the above.
      • Discuss
    • 9. The line of sight is kept as high above ground surface as possible to minimise the error in the observed angles due to

    • Options
    • A. shimmering
    • B. horizontal refraction
    • C. vertical refraction
    • D. both shimmering and horizontal refraction.
      • Discuss
    • 10. While measuring the distance between two points along upgrade with the help of a 20 m chain, the forward end of the chain is shifted forward through a distance

    • Options
    • A. 20 (sin ? - 1)
    • B. 20 (cos ? - 1)
    • C. 20 (sec ? - 1)
    • D. 20 (cosec ? - 1).
      • Discuss

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