Surveying The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is B = bH/f B = b/fH B =f/bH B = H/bf B = bH/f B = b/fH B =f/bH B = H/bf ANSWER DOWNLOAD EXAMIANS APP
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 14,000 m 10,000 m 12,000 m 8,000 m 14,000 m 10,000 m ANSWER DOWNLOAD EXAMIANS APP
Surveying If 16 flight lines are run perpendicular to an area 30 km wide, their spacings on a photographical map on scale 1 : 50,000 , will be 4 cm 3 cm 2 cm 1 cm 4 cm 3 cm 2 cm 1 cm ANSWER DOWNLOAD EXAMIANS APP
Surveying α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being ‘S’ and ‘f’ respectively. Parallax displacement of the point due to relief, is h (tan α - tan β)/S h (tan α + tan β)/S h tan β/S h tan α/S h (tan α - tan β)/S h (tan α + tan β)/S h tan β/S h tan α/S ANSWER DOWNLOAD EXAMIANS APP
Surveying The scale of a vertical photograph of focal length ‘f’ taken from height of ‘H’ metres above M.S.L., at a point of reduced level ‘h’, is f/H f/(H + h) f/(H - h) (H - h)/f f/H f/(H + h) f/(H - h) (H - h)/f ANSWER DOWNLOAD EXAMIANS APP
Surveying The great circle which passes through the zenith, nadir and the poles, is known as Meridian Vertical circle None of these Prime vertical Meridian Vertical circle None of these Prime vertical ANSWER DOWNLOAD EXAMIANS APP
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