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Advanced Surveying
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Question
23 cm x 23 cm photographs are taken from a flying height with a camera of focal length of 3600 m and 15.23 cm respectively. A parallax difference of 0.01 mm represents
Options
A. 1 m
B. 2 m
C. 3 m
D. 4 m
E. 5 m.
Correct Answer
1 m
Advanced Surveying problems
Search Results
1. Homologous point is
Options
A. photo principal point
B. ground principal point
C. ground isocentre
D. photo isocentre
E. all the above.
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Correct Answer: all the above.
2. The meridian of a place is
Options
A. a great circle passing through the place and the poles
B. a great circle whose plane is perpendicular to the axis of rotation and it also passes through the place
C. a semi-circle which passes through the place and is terminated at the poles
D. an arc of the great circle which passes through the place and is perpendicular to the equator.
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Correct Answer: a semi-circle which passes through the place and is terminated at the poles
3. Sidereal day
Options
A. is the period of time taken by the earth in making a complete rotation with reference to stars
B. is slightly shorter than an ordinary solar day
C. is divided into the conventional hours, minutes and seconds
D. all the above.
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Correct Answer: all the above.
4. If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is
Options
A. 30°
B. 35°
C. 40°
D. 45°.
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Correct Answer: 40°
5. If
E
is the spherical excess and
R
the radius of the earth, the surface area of the triangle, is
Options
A.
B.
C.
D.
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Correct Answer:
6. Homologous points are
Options
A. opposite corners of a photograph
B. nodal points of the camera lens
C. corresponding points on the ground and photograph
D. plumb points of stereo pair of photographs.
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Correct Answer: corresponding points on the ground and photograph
7. Pick up the correct statement for horizontal photographs.
Options
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.
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Correct Answer: All the above.
8. The plane at right angle to the zenith-nadir line and passing through the centre of the earth, is called
Options
A. rational horizon
B. true horizon
C. celestial horizon
D. all the above.
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Correct Answer: all the above.
9. The distance between the minor control point and the principal point should be equal to
Options
A. base line of the left photograph of stereo pair
B. base line of the right photograph of stereo pair
C. sum of the base lines of stereo pair
D. mean of the base lines of the stereo pair.
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Correct Answer: mean of the base lines of the stereo pair.
10. Limiting gradient for locating the base line on evenly-sloping ground, is
Options
A. 1 in 12
B. 1 in 10
C. 1 in 8
D. 1 in 6.
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Correct Answer: 1 in 12
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