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Civil Engineering :: Surveying

  1. In optical reading instruments

  2. A.

    the vertical circle is usually continuous from 0° to 359°

    B.

    the readings increase when the telescope is elevated in the face left position

    C.

    the readings decrease when the telescope is elevated in the face right position

    D.

    all the above.

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  3. For setting out a simple curve, using two theodolites.

  4. A.

    offsets from tangents are required

    B.

    offsets from chord produced are required

    C.

    offsets from long chord are required

    D.

    deflection angles from Rankine's formula are required

    E.

    none of these.

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  5. Geodetic surveying is undertaken

  6. A.

    for production of accurate maps of wide areas

    B.

    for developing the science of geodesy

    C.

    making use of most accurate instruments and methods of observation

    D.

    for determination of accurate positions on the earth's surface of system of control points

    E.

    all the above.

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

  8. A.

    13.75 m

    B.
    3.44 m
    C.

    1375 m

    D.

    none of these.

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  9. A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A, the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is

  10. A.

    0.02 m inclined upwards

    B.

    0.04 m inclined downwards

    C.

    0.04 m inclined upward

    D.

    none of these.

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  11. Keeping the instrument height as 1 \(\frac { 1 } { 2 }\) m, length of staff 4 m, the up gradient of the ground 1 in 10, the sight on the up slope must be less than

  12. A.

    25 cm

    B.

    20 m

    C.

    45 m

    D.

    10 m

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  13. True meridian of different places

  14. A.

    converge from the south pole to the north pole

    B.

    converge from the north pole to the south pole

    C.

    converge from the equator to the poles

    D.

    run parallel to each other.

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  15. Let angular value of one graduation of a tube of length x be φ seconds and R be the radius of its internal curved surface, then

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  17. Pick up the correct statement from the following :

  18. 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.

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  19. 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

  20. A.

    passes clear of hill top C

    B.

    passes below the hill top C

    C.

    grazes the hill top C

    D.

    none of these.

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