Advanced Surveying problems
- 1. If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be
Options- A. 1 cm
- B. 2 cm
- C. 3 cm
- D. 4 cm
- E. 5 cm. Discuss
Correct Answer: 4 cm
- 2. The following points form a pair of homologous points :
Options- A. Photo principal point and ground principal point
- B. Photo isocentre and ground isocentre
- C. Photo plumb point and ground plumb point
- D. all the above. Discuss
Correct Answer: all the above.
- 3. At eastern elongation, the pole star moves
Options- A. eastward
- B. westward
- C. northward
- D. southward. Discuss
Correct Answer: northward
- 4. An aerial photograph may be assumed as
Options- A. parallel projection
- B. orthogonal projection
- C. central projection
- D. none of these. Discuss
Correct Answer: central projection
- 5. Rotation of the camera at exposure about its vertical axis, is known as
Options- A. swing
- B. tilt
- C. tip
- D. none of these. Discuss
Correct Answer: swing
- 6. A star may culminate at zenith if its declination is
Options- A. greater than the longitude of the place
- B. less than the latitude of the place
- C. equal to the latitude of the place
- D. none of these. Discuss
Correct Answer: equal to the latitude of the place
- 7. On vertical photographs, height displacement is
Options- A. positive for points above datum
- B. negative for points below datum
- C. zero for points vertically below the air station
- D. all the above. Discuss
Correct Answer: all the above.
- 8. The flying height of the camera is 1, 000 m above mean ground level, the distance of the top of a Minar from a nadir point is 10 cm and the relief displacement of Minar is 7.2 mm. The height of the Minar, is
Options- A. 52 m
- B. 62 m
- C. 72 m
- D. 82 m. Discuss
Correct Answer: 72 m
- 9. The main object of the astronomer to obtain
Options- A. astronomical latitude
- B. astronomical longitude
- C. astronomical bearing
- D. all of these. Discuss
Correct Answer: all of these.
- 10. The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as
Options- A. ground principal point
- B. ground plumb point
- C. iso-centre
- D. perspective centre. Discuss
Correct Answer: ground plumb point
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