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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