Surveying problems
- 1. The 'fix' of a plane table station with three known points, is bad if the plane table station lies
Options- A. in the great triangle
- B. outside the great triangle
- C. on the circumference of the circumscribing circle
- D. none of these. Discuss
Correct Answer: on the circumference of the circumscribing circle
- 2. The main principle of surveying is to work
Options- A. from part to the whole
- B. from whole to the part
- C. from higher level to the lower level
- D. from lower level to higher level. Discuss
Correct Answer: from whole to the part
- 3. Keeping the instrument height as 1.5 m, length of staff 4 m, the slope of the ground as 1 in 10, the sight on the down-slope, must be less than
Options- A. 30 m
- B. 25 m
- C. 20 m
- D. 15 m Discuss
Correct Answer: 25 m
- 4. Pick up the correct statement from the following :
Options- A. the eyepiece plays no part in defining the line of sight
- B. the diaphragm plays no part in defining the line of sight
- C. the optical centre of the objective plays no part in defining the line of sight
- D. none of these. Discuss
Correct Answer: the eyepiece plays no part in defining the line of sight
- 5. If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to
Options- A. 573 S/R
- B. 573 R/S
- C. 171.9 S/R
- D. 1718.9 R/S
- E. 1718.9 S/R. Discuss
Correct Answer: 1718.9 S/R.
- 6. The slope correction for a length of 30 m along a gradient of 1 in 20, is
Options- A. 3.75 cm
- B. 0.375 cm
- C. 37.5 cm
- D. 2.75 cm. Discuss
Correct Answer: 3.75 cm
- 7. Two concave lenses of 60 cm focal length are cemented on either side of a convex lens of 15 cm focal length. The focal length of the combination is
Options- A. 10 cm
- B. 20 cm
- C. 30 cm
- D. 40 cm Discuss
Correct Answer: 30 cm
- 8. Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
Options- A. chain surveying
- B. compass surveying
- C. plan table surveying
- D. tacheometric surveying. Discuss
Correct Answer: plan table surveying
- 9. The most reliable method of plotting a theodolite traverse, is
Options- A. by consecutive co-ordinates of each station
- B. by independent co-ordinates of each station
- C. by plotting included angles and scaling off each traverse leg
- D. by the tangent method of plotting. Discuss
Correct Answer: by independent co-ordinates of each station
- 10. If h is the difference in level between end points separated by l, then the slope correction is
. The second term may be neglected if the value of h in a 20 m distance is less than
Options- A.
m - B. 1 m
- C. 2 m
- D. 3 m Discuss
Correct Answer: 3 m
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