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- Question
The surface of zero elevation around the earth, which is slightly irregular and curved, is known as
Options- A. mean sea level
- B. geoid surface
- C. level surface
- D. horizontal surface.
- Correct Answer
- geoid surface
- 1. 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. Discuss
- 2. 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 Discuss
- 3. The combined effect of curvature and refraction over a distance L kilometres is
Options- A. 67.2 L2 mm
- B. 76.3 L2 mm
- C. 64.5 L2 mm
- D. none of these. Discuss
- 4. The constant vertical distance between two adjacent contours, is called
Options- A. horizontal interval
- B. horizontal equivalent
- C. vertical equivalent
- D. contour interval
- E. contour gradient. Discuss
- 5. The correction to be applied to each 30 metre chain length along ?° slope, is
Options- A. 30 (sec ? - 1) m
- B. 30 (sin ? - 1) m
- C. 30 (cos ? - 1) m
- D. 30 (tan ? - 1) m
- E. 30 (cot ? - 1) m. Discuss
- 6. 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. Discuss
- 7. 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. Discuss
- 8. 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 + An + 2(A2 + A4 + ... + An - 1) + 4(A3 + A5 + ... + An - 2)] - D. V = [A1 + An + 4(A2 + A4 + ... + An - 1) + 4(A3 + A5 + ... + An - 2)].
Discuss
- 9. 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. Discuss
- 10. 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. Discuss
Surveying problems
Search Results
Correct Answer: fitted with a glass wedge in front of telescope.
Correct Answer: 0.060 m
Correct Answer: 67.2 L2 mm
Correct Answer: contour interval
Correct Answer: 30 (sec ? - 1) m
Correct Answer: The back staff is at lower point
Correct Answer: by giving spot levels to salient features at close interval.
Correct Answer:
Correct Answer: all the above.
Correct Answer: All the above.
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