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Civil Engineering - Advanced Surveying

Exercise : Advanced Surveying - Section 3
16.
Pick up the correct statement from the following :
The plane passing through the perspective centre of a stereo pair and a ground point, is known as basal plane
Each pair of image points on stereo pair have their own basal plane
Relative orienation means reconstructing the basal plane
Relative orientation of the model is achieved only when five points within the model are cleared of Y-parallax
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
If α is the observed altitude, the refraction correction in seconds, is
58" cot α
58" tan α
58 sin α
58 cos α.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The value of geo-centric parallax to be added to the observed altitude of sun is
9" cos α
9" sin α
9" tan α
9" cot α.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
With standard meridian as 82° 30' E the standard time at longitude 90° E is 8 h 30 m. The local mean time at the place will be
7 h 00 m
7 h 30 m
8 h 00 m
8 h 30 m
9 h 00 m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
A star is said to elongate
when the star momentarily moves vertically
when the angle at the star of the spherical triangle is 90°
when the star's declination is greater than the observer's latitude
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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