1. Pick up the correct statement from the following :
a)he 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.
The Correct Answer is: d)All the above.
Explanation:
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2. 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.
The Correct Answer is: none of these.
Explanation:
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3. Determining the difference in elevation between two points on the surface of the earth, is known as
a)levelling
b)angles between the curved lines are treated as plane angles
c)curvature of the earth surface is taken into account
d)none of these.
The Correct Answer is: c)curvature of the earth surface is taken into account
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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)angles between the curved lines are treated as plane angles
c)curvature of the earth surface is taken into account
d)none of these.
The Correct Answer is: c)curvature of the earth surface is taken into account
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.
The Correct Answer is: a)an over hanging cliff
Explanation:
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6. While working on a plane table, the correct rule is :
a)Draw continuous lines from all instrument stations
b)Draw short rays sufficient to contain the points sought
c)Intersection should be obtained by actually drawing second rays
d)Take maximum number of sights as possible from each station to distant objects.
The Correct Answer is: b)Draw short rays sufficient to contain the points sought
Explanation:
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7. In case of a double line river, contours are
a)stopped at the banks of the river
drawn across the water
c)drawn by parabolic curves having their vertex at the centre of the water.
d).stopped at the edge of the river
The Correct Answer is: drawn across the water
Explanation:
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