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Surveying

Surveying
The correction for parallax, is

+ 8".8 cos α
- 8".8 cos α
- 8".8 cos α
+ .8" sin α

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Surveying
To have greatest coverage of the area, the type of photography used, is

Low oblique
Vertical
High oblique
None of these

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Surveying
The sidereal day is the time interval between two successive upper transits of

Mean sun
First point of Libra
First point of Aries
The polar star

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Surveying
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

f sec θ
f cos θ
f sin θ
f tan θ

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Surveying
The coverage is least if photography is

Vertical
Low oblique
None of these
High oblique

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Surveying
Size of a theodolite is specified by

the diameter of lower plate
the length of telescope
the diameter of upper plate
the diameter of vertical circle

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