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Civil Engineering :: Surveying

  1. In a tropical year, the numbers of sidereal days are

  2. A.

     One less than mean solar days

    B.

     One more than mean solar days

    C.

     Equal to mean solar days

    D.

     None of these


  3. The point on the celestial sphere vertically below the observer's position, is called

  4. A.

     Zenith

    B.

     Celestial point

    C.

     Nadir

    D.

     Pole


  5. The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

  6. A.

     Visible horizon

    B.

     Sensible horizon

    C.

     Celestial horizon

    D.

     True horizon


  7. The type of surveying which requires least office work is

  8. A.

     tacheomefry

    B.

     trigonometrical levelling

    C.

     plane table surveying

    D.

     theodolite surveying


  9. During chaining along a straight line, the . leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

  10. A.

     4 chains

    B.

     6 chains

    C.

     120 m

    D.

     180m


  11. The difference of levels between two stations A and B is to be determined. For best results, the instrument station should be

  12. A.

     equidistant from A and B

    B.

     closer to the higher station

    C.

     closer to the lower station

    D.

     as far as possible from the line AB


  13. Subtense bar is an instrument used for

  14. A.

     levelling

    B.

     measurement of horizontal distances in plane areas

    C.

     measurement of horizontal distances in undulated areas

    D.

     measurement of angles


  15. Cross staff is an instrument used for

  16. A.

     measuring approximate horizontal angles

    B.

     setting out right angles

    C.

     measuring bearings of the lines

    D.

     none of the above


  17. Theodolite is an instrument used for

  18. A.

     tightening the capstan-headed nuts of level tube

    B.

     measurement of horizontal angles only

    C.

     measurement of vertical angles only

    D.

     measurement of both horizontal and vertical angles


  19. Systematic errors

  20. A.

     Always follow some definite mathematical law

    B.

     Can be removed by applying corrections to the observed values

    C.

     Are also known as cumulative errors

    D.

     All the above