Civil Engineering - Surveying
Exercise :: Surveying - Section 8
1. |
Pick up the correct statement from the following : |
A. |
The directions of plumb lines suspended at different points in a survey are not strictly parallel | B. |
In surveys of small extent, the effect of curvature may be ignored and the level surface of the earth is assumed as horizontal | C. |
In surveys of large extent, the effect of curvature of the earth must be considered | D. |
All the above. |
Answer: Option D
Explanation:
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2. |
If Δ is the angle of deflection of a simple curve of radius R, the length of its long chord, is |
Answer: Option D
Explanation:
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3. |
In geodetic surveys higher accuracy is achieved, if |
A. |
curvature of the earth surface is ignored | B. |
curvature of the earth surface is taken into account | C. |
angles between the curved lines are treated as plane angles | D. |
none of these. |
Answer: Option B
Explanation:
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4. |
Determining the difference in elevation between two points on the surface of the earth, is known as |
A. |
levelling | B. |
simple levelling | C. |
differential levelling | D. |
longitudinal levelling. |
Answer: Option C
Explanation:
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5. |
Contours of different elevations may cross each other only in the case of |
A. |
an over hanging cliff | B. |
a vertical cliff | C. |
a saddle | D. |
an inclined plane. |
Answer: Option A
Explanation:
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