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Surveying

Surveying
The normal longitudinal overlap is generally kept

0.75
0.7
0.5
0.6

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Surveying
The difference in longitude of two places expressed in time is equal to the difference in their

Mean solar time
All listed here
Sidereal time
Apparent solar time

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Surveying
After fixing the plane table to the tripod, the main operations which are needed at each plane table station are (i) Levelling (ii) Orientation (iii) CenteringThe correct sequence of these operations is

(ii), (iii), (i)
(iii), (i), (ii)
(i), (ii), (iii)
(i), (iii), (ii)

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Surveying
If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement

i = v. t. H/f
i = v. t. (f/H)
i = v. f/t. H
i = t. H/v. f

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Surveying
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

45°
30°
60°
35°

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Surveying
Right ascension of a heavenly body is its equatorial angular distance measured

Westward from the first point of Libra
Eastward from the first point of Aeries
Eastward from the first point of Libra
Westward from the first point of Aeries

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