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Civil Engineering :: Surveying

  1. While surveying a plot of land by plane tabling, the field observations

  2. A.

    and plotting proceed simultaneously

    B.

    and plotting do not proceed simultaneously

    C.

    and recorded in field books to be plotted later

    D.

    all the above.

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  3.  

    If α and β be the elevations of two objects A and B respectively, θ be the angle observed by a sextant. The correct horizontal angle is

  4. A.

    B.

    C.

    D.

    none of these.

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  5.  

    If vertical angles of inclined sights do not exceed 10° and non-verticality of the staff remains within 1°, stadia system of tacheometric observations are made on

  6. A.

    staff normal

    B.
    staff vertical
    C.

    staff normal as well as vertical

    D.

    none of these.

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  7. If the length of a chain line along a slope of θ° is l, the required slope correction is

  8. A.

    2l cos2 θ/2

    B.

    2l sin2 θ/2

    C.
    l tan2 θ/2
    D.

    l cos2 θ/2.

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  9. The sag of 50 m tape weighing 4 kg under 5 kg tension is roughly

  10. A.
    0.043 m
    B.

    0.053 m

    C.

    0.063 m

    D.

    0.073 m

    E.

    0.083 m

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  11. The angle of intersection of a contour and a ridge line, is

  12. A.

    30°

    B.

    45°

    C.

    60°

    D.
    90°.

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  13. The area of any irregular figure of the plotted map is measured with

  14. A.
    pentagraph
    B.

    sextant

    C.

    clinometer

    D.

    planimeter

    E.

    optical square

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  15. is a conventional sign of

  16. A.

    mosque

    B.

    temple

    C.

    church

    D.
    idgah.

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  17.  

    Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed
    (where k is in kilometers.)

  18. A.

    ± 0.1 \(\sqrt{ k}\) mm 

    B.

    ± 0.5 \(\sqrt{ k}\) mm

    C.

    ± 1\(\sqrt{ k}\) mm

    D.

    ± 2 \(\sqrt{ k}\) mm

    E.
    ± 5 \(\sqrt{ k}\) mm

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  19.  

    The curvature of the earth's surface, is taken into account only if the extent of survey is more than

  20. A.

    100 sq km

    B.

    100 sq km

    C.

    200 sq km

    D.

    260 sq km.

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