Advanced Surveying problems
- 1. Spring tides are caused when
Options- A. sun and moon are in line with earth
- B. solar tidal force acts opposite to lunar tidal force
- C. solar tidal force and lunar tidal force both coincide
- D. none of these. Discuss
Correct Answer: solar tidal force and lunar tidal force both coincide
- 2. By applying clockwise swing to right projector, maximum y-parallax is introduced in the model at
Options- A. position 1
- B. position 2
- C. position 4
- D. position 6. Discuss
Correct Answer: position 1
- 3. ? and ? are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is
Options- A.
- B.
- C.
- D.
.
Discuss
Correct Answer:
- 4. The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as
Options- A. isocentre
- B. principal point
- C. perspective centre
- D. plumb line. Discuss
Correct Answer: principal point
- 5. The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 6. The net ground area of a vertical photograph 20 cm x 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is
Options- A. 0.50 sq km
- B. 0.56 sq km
- C. 0.60 sq km
- D. 0.64 sq km. Discuss
Correct Answer: 0.64 sq km.
- 7. The rate of change of parallax dp/dh with respect to change in h, may be expressed as
Options- A. fB/(H - h)
- B. fB/(H - h)2
- C. fB/(H + h)
- D. fB/(H + h)2. Discuss
Correct Answer: fB/(H - h)2
- 8. Pick up the in-correct statement from the folowing :
Options- A. Correction for refraction is always negative
- B. Correction for parallax is always positive
- C. Correction for semi-diameter is always negative
- D. Correction for dip is always negative
- E. None of these. Discuss
Correct Answer: Correction for semi-diameter is always negative
- 9. The prime vertical passes through
Options- A. the east point of the horizon
- B. the west point of the horizon
- C. the zenith point of the observer
- D. the nadir point of horizon
- E. all the above. Discuss
Correct Answer: all the above.
- 10. The difference of parallax for a given difference in elevation is independent of
Options- A. focal length of the camera
- B. overall size of the photo graphs
- C. percentage of overlap
- D. all the above. Discuss
Correct Answer: all the above.
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