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Civil Engineering :: Structural Design Specifications

  1. The diaphragm of a stadia theodolite is fitted with two additional

  2. A.
    horizontal hairs
    B.
    vertical hairs
    C.
    horizontal and two vertical hairs
    D.
    none of these.

  3. Centering error of a theodolite produces an error

  4. A.
    in all angles equally
    B.
    which does not vary with the direction or pointing
    C.
    which varies with the direction of pointing and inversely with the length of sight
    D.
    none of these.

  5. In levelling operation

  6. A.
    if second reading is more than first, it represents a rise
    B.
    if first reading is more than second, it represents a rise
    C.
    if first reading is less than second, it represents a fall
    D.
    if second reading is less than first, it represents a fall
    E.
    both (b) and (c).

  7. A tape of length l and weight W kg/m is suspended at its ends with a pull of P kg, the sag correction is

  8. A.
    B.
    C.
    D.
    .

  9. Pick up the correct statement from the following :

  10. A.
    in astronomical telescope, the rays from the object after refraction at the objective are brought to a focus before entering the eyepiece to produce a real inverted image in front of the eye piece
    B.
    in Galileo's telescope, the rays from the object get refracted at the objective and are intercepted by the eyepiece before a real image is formed
    C.
    a line passing through the optical centre of the objective traversing through the eyepiece, is called line of sight
    D.
    the line of sight which passes through the intersection of cross-lines marked on a diaphragm fixed in front of the eyepiece in a plane at right-angles to the axis, is called the line of collimation
    E.
    all the above.

  11. The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known

  12. A.
    balancing the sights
    B.
    balancing the departures
    C.
    balancing the latitudes
    D.
    balancing the traverse.

  13. If the sight distance (S) is equal to the length of the vertical-curve (2l) joining two grades g1% and - g2%, the height of the apex will be

  14. A.
    B.
    C.
    D.
    none of these.

  15. Orientation of a plane table by solving two point problem is only adopted when

  16. A.
    saving of time is a main factor
    B.
    better accuracy is a main factor
    C.
    given points are inaccessible
    D.
    none of these.

  17. A back sight

  18. A.
    is always taken on a point of known elevation or can be computed
    B.
    is added to the known level to obtain the instrument height
    C.
    taken on an inverted staff is treated as negative
    D.
    all the above.

  19. If the area calculated form the plan plotted with measurements by an erroneous chain, accurate area of the plan is

  20. A.
    B.
    C.
    D.
    E.
    none of the above