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Civil Engineering :: Surveying

Surveying - Section 1
Surveying - Section 2
Surveying - Section 3
Surveying - Section 4
Surveying - Section 5
Surveying - Section 6
Surveying - Section 7
Surveying - Section 8
Surveying - section-9

  1. Accuracy of elevation of various points obtained from contour map is limited to
    2. A.

    \(\frac { 1 } { 2 }\)of the contour interval
    B.

    \(\frac { 1 } { 4 }\)th of the contour interval
    C.

    \(\frac { 1 } { 3 }\)rd of the contour interval
    D.

    \(\frac { 1 } { 5 }\)th of the contour interval.

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  2.  

    Magnetic bearing of a survey line at any place
    3. A.

    remains constant
    B.

    changes systematically
    C.

    varies differently in different months of the year
    D.

    is always greater than true bearing.

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  3. Perpendicularity of an offset may be judged by eye, if the length of the offset is

    4. A.

    5 m
    B.

    10 m
    C.

    15 m
    D.

    20 m.

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  4. The bearings of two traverse legs AB and BC are N52° 45' E and N34° 30' E respectively. The deflection angle is

    5. A.

    18° 15' E
    B.

    18° 15' N
    C.

    18° 15' W
    D.

    18° 15' R
    E.

    18° 15' L

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  5. A lemniscate curve will not be transitional throughout, if its deflection angle, is
    6. A.

    45°
    B.

    60°
    C.
    90°
    D.

    120°
    E.

    180°

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  6. In a lemniscate curve the ratio of the angle between the tangent at the end of the polar ray and the straight, and the angle between the polar ray and the straight, is

    7. A.

    2
    B.

    3
    C.

    4
    D.

    5
    E.

    3/2

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  7.  

    If V is the speed of a locomotive in km per hour, g is the acceleration due to gravity, G is the distance between running faces of the rails and R is the radius of the circular curve, the required super elevation is
    8. A.

    \( \frac { gv^2 } { GR } \)
    B.

    \(\frac { Rg } { Gv^2 } \)
    C.

    \( \frac { GR } {gv^2 } \)
    D.

    \( \frac { Gv^2 } { gR } \)

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  8.  

    Ranging in chain survey means
    9. A.

    looking at an isolated point not on the line
    B.

    establishing an intermediate point on the line
    C.

    determining the distance between end points
    D.

    determining the offset distance
    E.

    none of these

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  9. Accurate measurement of deflection angles with a transit not properly adjusted may be made by

    10. A.

    setting the vernier A at zero at back station and then plunging the telescope
    B.

    setting the vernier A at zero at back station and turning the instrument to the forward station
    C.

    taking two back sights one with the telescope normal and the other with telescope inverted
    D.

    none of these.

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  10. If whole circle bearing of a line is 120°, its reduced bearing is
    11. A.

    S 20° E
    B.

    S 60° E
    C.

    N 120° E
    D.
    N 60° E.

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