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Surveying

Surveying
The correction for parallax, is

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

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Surveying
If the image of a triangulation station of R.L. 500 m is 4 cm from the principal point of a vertical photo taken from an altitude of 2000 m, above datum, the height displacement will be

6 mm
10 mm
2 mm
4 mm

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Surveying
The altitude of a heavenly body is its angular distance, measured on the vertical circle passing through the body, above

None of these
Pole
Equator
Horizon

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Surveying
The great circle along which the sun appears to trace on the celestial sphere with earth as centre during the year, is called

Equator
Ecliptic
None of these
Celestial equator

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Surveying
The methods used for locating the plane table stations arei) radiationii) traversingiii) intersectioniv) resectionThe correct answer is

(i) and (ii)
(iii) and (iv)
(i) and (iii)
(ii) and (iv)

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Surveying
If ‘δ’ is the declination of the Polaris and ‘λ’ is the latitude of the place, the azimuth of the Polaris, is

cos (90° - δ)/cos (90° - λ)
tan (90° + δ)/tan (90° + λ)
sin (90° - δ)/sin (90° - λ)
cos δ/cos λ

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