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Civil Engineering :: Surveying

  1. The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every

  2. A.

    100 sq. km of area

    B.

    150 sq. km of area

    C.

    200 sq. km of area

    D.

    none of these.

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  3. The systematic errors which persist and have regular effects in the performance of a survey operation, are due to

  4. A.

    carelessness

    B.

    faulty instrument

    C.

    inattention

    D.

    none of these.

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  5. It θ 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

  6. A.

    \(\sqrt{n} \)

    B.

    ø/ I \(\sqrt{n} \)

    C.

    ø\(3\sqrt{n}\)

    D.

    \( \frac { 1 } {3 }\)ø \(\sqrt{n} \)

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  7. The best method of interpolation of contours, is by

  8. A.

    estimation

    B.

    graphical means

    C.

    computation

    D.

    all of these.

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  9. Pick up the correct specification of Ramsden eyepiece from the following :

  10. A.

    it consists of two equal piano convex lenses

    B.

    the curved surfaces of plano-convex lenses face each other

    C.

    the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.

    D.

    the distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam

    E.

    all the above.

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  11. The conventional sign shown in below figure represents a

  12. A.

    bridge carrying railway below road

    B.

    bridge carrying road below railway

    C.

    bridge carrying road and railway at the same level

    D.

    a level crossing.

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  13. Deviation of the actual road gradient from the proposed contou'r gradient up hill side, involves

  14. A.

    embankment on the centre line

    B.

    excavation on the centre line

    C.

    earth work on the centre line

    D.

    none of these.

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  15. Measuring with a 30 m chain, 0.01 m too short, introduces

  16. A.

    positive compensating error

    B.
    negative compensating error
    C.

    positive cumulative error

    D.

    negative cumulative error.

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  17. Setting out a curve by two theodolite method, involves

  18. A.

    linear measurements only

    B.

    angular measurements only

    C.

    both linear and angular measurements

    D.

    none of these.

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  19. When the bubble of the level tube of a level, remains central

  20. A.

    line of sight is horizontal

    B.

    axis of the telescope is horizontal

    C.

    line of collimation is horizontal

    D.

    geometrical axis of the telescope is horizontal.

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