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  • Question

  • The desired sensitivity of a bubble tube with 2 mm divisions is 30". The radius of the bubble tube should be


  • Options
  • A. 13.75 m
  • B. 3.44 m
  • C. 1375 m
  • D. none of these.

  • Correct Answer
  • 13.75 m 

    • Surveying problems

    Search Results

    • 1. If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by

    • Options
    • A. Bowditch's rule
    • B. Transit rule
    • C. Empirical rule
    • D. all of the above.
      • Discuss
    • 2. Two hill tops A and B 20 km apart are intervened by a third top C. If the top most contour of the three hill tops are of the same value, state whether the line of sight AB

    • Options
    • A. passes clear of hill top C
    • B. passes below the hill top C
    • C. grazes the hill top C
    • D. none of these.
      • Discuss
    • 3. Metric chains are generally available in

    • Options
    • A. 10 m and 20 m length
    • B. 15 m and 20 m length
    • C. 20 m and 30 m length
    • D. 25 m and 100 m length
      • Discuss
    • 4. It ? is the probable error of an observed bearing of a line of length l, the error over the whole length of the traverse of n lines of length l is

    • Options
    • A. l n
    • B. n
    • C. ?
    • D. ? n
      • Discuss
    • 5. If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. none of the above
      • Discuss
    • 6. Setting out a curve by two theodolite method, involves

    • Options
    • A. linear measurements only
    • B. angular measurements only
    • C. both linear and angular measurements
    • D. none of these.
      • Discuss
    • 7. Plotting of inaccessible points on a plane table, is done by

    • Options
    • A. intersection
    • B. traversing
    • C. radiation
    • D. none of these.
      • Discuss
    • 8. Pick up the correct statement from the following :

    • Options
    • A. the length of the brass handle is included in the length of chain
    • B. the handles are on swivel joints to prevent twisting of the chain
    • C. the fifth tag from either end of the chain is numbered 5
    • D. the length of the Gunter's chain is 66 ft.
    • E. all the above.
      • Discuss
    • 9. The longitudinal section of the surface of bubble tube is

    • Options
    • A. straight
    • B. circular
    • C. parabolic
    • D. elliptic.
      • Discuss
    • 10. The curve composed of two arcs of different radii having their centres on the opposite side of the curve, is known

    • Options
    • A. a simple curve
    • B. a compound curve
    • C. a reverse curve
    • D. a vertical curve.
      • Discuss

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