logo

CuriousTab

CuriousTab

Discussion


Home Civil Engineering Surveying Comments

  • Question
  • In chain surveying tie lines are primarily provided


  • Options
  • A. to check the accuracy of the survey
  • B. to take offsets for detail survey
  • C. to avoid long offsets from chain lines
  • D. to increase the number of chain lines.

  • Correct Answer
  • to avoid long offsets from chain lines 


  • Surveying problems


    Search Results


    • 1. Pick up the correct statement from the following :

    • Options
    • A. the apparent error on reversal is twice the actual error
    • B. the correction may be made equal to half the observed discrepancy.
    • C. the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results
    • D. all the above.
    • Discuss
    • 2. If arithmetic sum of latitudes of a closed traverse is ?Lat and closing error in latitude is dx, the correction for a side whose latitude is l, as given by Transit Rule, is

    • Options
    • A.
    • B.
    • C.
    • D. none of these.
    • Discuss
    • 3. An imaginary line joining the points of equal elevation on the surface of the earth, represents

    • Options
    • A. contour surface
    • B. contour gradient
    • C. contour line
    • D. level line
    • E. none of these.
    • Discuss
    • 4. If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. .
    • Discuss
    • 5. The accuracy of measurement in chain surveying, does not depend upon

    • Options
    • A. length of the offset
    • B. scale of the plotting
    • C. importance of the features
    • D. general layout of the chain lines.
    • Discuss
    • 6. The probable error of the adjusted bearing at the middle is

    • Options
    • A. rn
    • B. rn
    • C. rn
    • D. rn.
    • Discuss
    • 7. The real image of an object formed by the objective, must lie

    • Options
    • A. in the plane of cross hairs
    • B. at the centre of the telescope
    • C. at the optical centre of the eye-piece
    • D. anywhere inside the telescope.
    • Discuss
    • 8. If ? is the vertical angle of an inclined sight, ? is the angle of tilt of the staff, the error

    • Options
    • A.
    • B.
    • C.
    • D. none of these.
    • Discuss
    • 9. If R is the radius of the main curve, ? the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is

    • Options
    • A. (R - S) tan ?/2 - L/2
    • B. (R + S) tan ?/2 - L/2
    • C. (R + S) tan ?/2 + L/2
    • D. (R - S) tan ?/2 + L/2
    • E. (R - S) cos ?/2 + L/2
    • Discuss
    • 10. While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is

    • Options
    • A. correctly focussed
    • B. not correctly focussed
    • C. said to have parallax
    • D. free from parallax.
    • Discuss


    Comments

    There are no comments.

Enter a new Comment