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/S h tan β/S h (tan α + tan β)/S h (tan α - tan β)/S h tan α/S h tan β/S h (tan α + tan β)/S h (tan α - tan β)/S ANSWER DOWNLOAD EXAMIANS APP
Surveying If α is the observed altitude, the refraction correction in seconds, is 58 cos α 58" cot α 58" tan α 58 sin α 58 cos α 58" cot α 58" tan α 58 sin α ANSWER DOWNLOAD EXAMIANS APP
Surveying Three point problem can be solved by All of these Lehman’s method Tracing paper method Tracing paper method All of these Lehman’s method Tracing paper method Tracing paper method ANSWER DOWNLOAD EXAMIANS APP
Surveying The sidereal day is the time interval between two successive upper transits of First point of Aries The polar star First point of Libra Mean sun First point of Aries The polar star First point of Libra Mean sun 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 1 cm 4 cm 3 cm 2 cm 1 cm 4 cm 3 cm 2 cm ANSWER DOWNLOAD EXAMIANS APP
Surveying The distance between the projection centre and the photograph, is called Principal distance Principal line Focal length Isocentric distance Principal distance Principal line Focal length Isocentric distance ANSWER DOWNLOAD EXAMIANS APP
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