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Surveying

Surveying
In a spherical triangle ABC, right angled at C, sin b equals

cot A tan a
sin a cos A
cos a sin A
tan a cot A

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Surveying
The smaller horizontal angle between the true meridian and a survey line, is known

Bearing
Declination
Dip
Azimuth

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Surveying
The difference of height of two points whose parallax difference is 0.8 mm on a pair of stereo pair taken from a height ‘H’ is 100 m. If mean photo base is 95.2 mm, the flying height is

12,000 m
8,000 m
10,000 m
14,000 m

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Surveying
With the rise of temperature, the sensitivity of a bubble tube

decreases
increases
remains unaffected
None of these

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Surveying
There are two stations A and B. Which of the following statements is correct?

The fore bearing of AB is AB
The back bearing of AB is BA
The fore and back bearings of AB differ by 180°
All listed here

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Surveying
The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is

4.4 mm
5.5 mm
7.5 mm
6.5 mm

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