Civil Engineering :: Surveying
- Pick up the correct statement from the following:
- The following points form a pair of homologous points:
- The necessary geometrical condition for triangulation adjustment is:
- If α is the observed altitude, the refraction correction in seconds, is
- The elevation of the star at elongation is obtained by
- For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are
- An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as
- The angle of intersection of the two plane mirrors of an optical square is
- Select the correct statement.
- Select the correct statement.
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A.
The angle between the plane of the negative and the horizontal plane containing perspective axis is the tilt of the photograph |
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B.
The direction of maximum tilt is defined by the photo principal line |
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C.
The principal plane is truly vertical plane which contains perspective centre as well as principal point and plumb point |
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D.
All the above |
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A.
A contour is not necessarily a closed curve. |
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B.
A contour represents a ridge line if the concave side of lower value con¬tour lies towards the higher value contour. |
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C.
Two contours of different elevations do not cross each other except in case of an overhanging cliff. |
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D.
All of the above statements are correct. |