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Civil Engineering :: Surveying

  1. If + 0.8% grade meets - 0.7% grade and the rate of change of grade for 30 m distance is 0.05, the length of the vertical curve will be

  2. A.

    600 m

    B.

    700 m

    C.

    800 m

    D.

    900 m

    E.

    1000 m

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  3. The included angles of a theodolite traverse, are generally measured

  4. A.

    clockwise from the forward station

    B.

    anti-clockwise from the back station

    C.

    anti-clockwise from the forward station

    D.

    clockwise from the back station.

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  5. Location of contour gradient for a high way is best set out from

  6. A.

    ridge down the hill

    B.

    saddle down the hill

    C.

    bottom to the ridge

    D.

    bottom to the saddle.

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  7. If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, prismoidal correction for a level section is

  8. A.

    D/2m(h1 - h2)

    B.

    D/3m(h1 - h2)

    C.

    D/6m(h1 - h2)2

    D.

    D/6m(h1 - h2)3

    E.

    D/6m(h1 + h2)2

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  9. In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of the focussing lens, is

  10. A.

    5.24 cm

    B.

    6.24 cm

    C.

    7.24 cm

    D.
    8.24 cm

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  11. The line normal to the plumb line is known as

  12. A.

    horizontal line

    B.

    level line

    C.

    datum line

    D.

    vertical line.

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  13. The angle of intersection of a curve is the angle between

  14. A.

    back tangent and forward tangent

    B.

    prolongation of back tangent and forward tangent

    C.

    forward tangent and long chord

    D.

    back tangent and long chord.

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  15. Planimeter is used for measuring

  16. A.

    volume

    B.

    area

    C.

    contour gradient

    D.

    slope angle

    E.

    none of these

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  17. In a perfect prismatic compass

  18. A.

    magnetic axis and geometric axis of the needle coincide

    B.

    ends of the needle and pivot are in same vertical and horizontal planes

    C.

    pivot is vertically over the centre of the graduated circle

    D.

    needle is always kept sensitive

    E.

    all the above.

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  19. The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as

  20. A.

    chromatic aberration

    B.

    spherical aberration

    C.

    astigmatism

    D.

    coma.

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