Surveying problems
- 1. If i is the stadia distance, f is the focal length and d is the distance between the objective and vertical axis of the techeometer, the multiplying constant, is
Options- A. f/i
- B. i/f
- C. (f + d)
- D. f/d. Discuss
Correct Answer: f/i
- 2. Correction per chain length of 100 links along a slope of ?° is
Options- A.
- B.
- C.
- D. 1.5?3. Discuss
Correct Answer:
- 3. Location of contour gradient for a high way is best set out from
Options- A. ridge down the hill
- B. saddle down the hill
- C. bottom to the ridge
- D. bottom to the saddle. Discuss
Correct Answer: saddle down the hill
- 4. Staff readings on pegs x and y from X station are 1.755 m and 2.850 m, and from station Y on staff head at Y and X are 0.655 m and 1.560 m. If reduced level of X is 105.5 m, the reduced level of Y is
Options- A. 104.0 m
- B. 104.5 m
- C. 105.0 m
- D. 105.5 m Discuss
Correct Answer: 104.5 m
- 5. Stadia techeometry was discovered by James Watt in the year.
Options- A. 1670
- B. 1770
- C. 1870
- D. 1900. Discuss
Correct Answer: 1770
- 6. 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
Correct Answer: 30 (sec ? - 1) m
- 7. 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
Correct Answer: contour interval
- 8. 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
Correct Answer: 67.2 L2 mm
- 9. 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
Correct Answer: 0.060 m
- 10. 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
Correct Answer: fitted with a glass wedge in front of telescope.
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