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Civil Engineering :: Surveying

  1.  

    Pick up the correct statement from the following :

  2. A.

    the power of a lens is the reciprocal of its focal length

    B.

    the unit of power of the lens is diopter

    C.

    the power of two or more thin lenses in contact is the power of the combination of the lenses

    D.

    all the above.

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  3. The area of a plane triangle ABC, having its base AC and perpendicular height h, is

  4. A.

    \(\frac { 1 } { 2 } \) bh

    B.

    \(\frac { 1 } { 2 } \)ba sin C

    C.

    \(\frac { 1 } { 2 } \)bc sin A

    D.

    \(\sqrt{ s (s-a)(s-b)(s-c)}\)

    where  s is \(\frac { a+b+c } { 2 } \)

    E.

    all the above

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  5. The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known

  6. A.

    declination

    B.

    azimuth

    C.

    dip

    D.

    bearing.

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  7. A relatively fixed point of known elevation above datum, is called

  8. A.

    bench mark

    B.

    datum point

    C.

    reduced level

    D.

    reference point.

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  9. Cross hairs in surveying telescopes, are fitted

  10. A.

    in the objective glass

    B.

    at the centre of the telescope

    C.

    at the optical centre of the eye piece

    D.

    in front of the eye piece.

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  11. Metric chains are generally available in

  12. 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

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  13. On a diagonal scale, it is possible to read up to

  14. A.

    one dimension

    B.

    two dimensions

    C.

    three dimensions

    D.

    four dimensions.

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  15. Plotting of inaccessible points on a plane table, is done by

  16. A.

    intersection

    B.

    traversing

    C.

    radiation

    D.

    none of these.

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  17.  

    A dumpy level is set up with its eye-piece vertically over a peg A. The height from the top of peg A to the centre of the eye-piece is 1.540 m and the reading on peg B is 0.705 m. The level is then setup over B. The height of the eye-piece above peg B is 1.490 m and a reading on A is 2.195 m. The difference in level between A and B is

  18. A.

    2.900 m

    B.

    3.030 m

    C.

    0.770 m

    D.

    0.785 m

    E.

    1.770 m.

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

  20. A.

    ± 0.1 \(\sqrt{ k}\) mm

    B.

    ± 0.2\(\sqrt{ k}\) mm

    C.

    ± 0.1\(\sqrt{ k}\)

    D.

    0.2 \(\sqrt{ k}\) mm

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