The Trapezoidal rule of volumes V of an embankment divided into a number of sect

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The Trapezoidal rule of volumes V of an embankment divided into a number of sections equidistant D, is given by
Options
A.
B.
C. V = [A₁ + A_n + 2(A₂ + A₄ + ... + A_{n - 1}) + 4(A₃ + A₅ + ... + A_{n - 2})]
D. V = [A₁ + A_n + 4(A₂ + A₄ + ... + A_{n - 1}) + 4(A₃ + A₅ + ... + A_{n - 2})].

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1. The representation of general topography of a very flat terrain is possible only
Options
A. by drawing contours at large interval
B. by drawing contours at small interval
C. by giving spot levels at large interval
D. by giving spot levels to salient features at close interval.

2. During levelling if back sight is more than foresight
Options
A. The forward staff is at lower point
B. The back staff is at lower point
C. The difference in level, cannot be ascertained.
D. none of these.

4. The theodolites used for making tacheometric observations by optical wedge system, are
Options
A. provided with stadia hairs in front of eye piece
B. not provided with stadia hairs at all
C. fitted with a glass wedge inside the telescope
D. fitted with a glass wedge in front of telescope.

5. A level when set up 25 m from peg A and 50 m from peg B reads 2.847 on a staff held on A and 3.462 on a staff held on B, keeping bubble at its centre while reading. If the reduced levels of A and B are 283.665 m and 284.295 m respectively, the collimation error per 100 m is
Options
A. 0.015 m
B. 0.030 m
C. 0.045 m
D. 0.060 m

6. Pick up the correct statement from the following
Options
A. the contour lines having the same elevation cannot unite and continue as one line
B. a contour can not end abruptly, but must ultimately close itself not necessarily within the limits of map.
C. the direction of steepest slope at a point on a contour is at right angles to the contour
D. all the above.

7. Pick up the correct statement from the following :
Options
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.

10. In geodetic surveys higher accuracy is achieved, if
Options
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.

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