MCQ on Advanced Surveying - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. Triangulation surveys are carried out for locating
(A) Control points for surveys of large areas
(B) Control points for photogrammetric surveys
(C) Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
(D) All the above

2. Pick up the correct statement for horizontal photographs.
(A) Parallel lines do not appear parallel in central projection
(B) The two sides of a road meet at the vanishing point
(C) The lines parallel to the negative plane are projected as parallel lines
(D) All the above

3. The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is
(A) 4.4 mm
(B) 5.5 mm
(C) 6.5 mm
(D) 7.5 mm

4. Pick up the correct statement from the following:
(A) The horizontal direction of the pole is called astronomical north
(B) The angle between the direction of true north and the direction of a survey line is called astronomical bearing
(C) The astronomical bearing is generally called azimuth
(D) All the above

5. A Nautical mile is
(A) One minute arc of the great circle passing through two points
(B) One minute arc of the longitude
(C) 1855.109 m
(D) All the above

6. Pick up the correct statement from the following:
(A) Centre of the celestial sphere is taken as the position of the observer
(B) Centre of the celestial sphere is taken as the centre of the earth
(C) Stars move and maintain their relative positions
(D) All the above

7. Pick up the correct statement from the following:
(A) One degree of longitude has greatest value at the equator
(B) One degree of longitude has greatest value at the poles
(C) One degree of longitude has the same value everywhere
(D) One degree of latitude decreases from the equator to the poles

8. If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by
(A) sin z = sec φ . cos δ
(B) cos z = sec φ . cos δ
(C) tan z = sec φ . cos δ
(D) None of these

9. Pick up the incorrect statement from the following. High oblique photographs
(A) May have tilt up to 30°
(B) May include the image of the horizon
(C) May not include the image of the horizon
(D) None of these

10. If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by
(A) sin H = tan φ . cot δ
(B) cos H = tan φ . cot δ
(C) tan H = tan φ . cot δ
(D) None of these

11. If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be
(A) f sin θ
(B) f cos θ
(C) f tan θ
(D) f sec θ

12. The coverage is least if photography is
(A) High oblique
(B) Low oblique
(C) Vertical
(D) None of these

13. The latitude (λ) of a place and the altitude (α) of the pole are related by
(A) λ = α
(B) λ = 90° - α
(C) λ = α - 90°
(D) λ = 180° - α

14. The principal line is the line joining the principal point and
(B) Isocenter
(C) Perspective centre
(D) None of these

15. The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured
(A) Normal to base line
(B) Parallel to base line
(C) Both (a) and (b)
(D) Neither (a) nor (b)

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