Surveying If α is the observed altitude, the refraction correction in seconds, is 58 sin α 58" cot α 58 cos α 58" tan α 58 sin α 58" cot α 58 cos α 58" tan α ANSWER DOWNLOAD EXAMIANS APP
Surveying The normal longitudinal overlap is generally kept 0.5 0.7 0.6 0.75 0.5 0.7 0.6 0.75 ANSWER DOWNLOAD EXAMIANS APP
Surveying At lower culmination, the pole star moves Northward Southward Westward Eastward Northward Southward Westward Eastward ANSWER DOWNLOAD EXAMIANS APP
Surveying If the length of a chain is found to be short on testing, it can be adjusted by straightening the links removing one or more small circular rings All of these closing the joints of the rings if opened out straightening the links removing one or more small circular rings All of these closing the joints of the rings if opened out 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 rise and fall method quicker and less tedious for large number of intermediate sights is less accurate than height of instrument method provides a check on the reduction of intermediate point levels is not suitable for levelling with tilting levels quicker and less tedious for large number of intermediate sights is less accurate than height of instrument method provides a check on the reduction of intermediate point levels is not suitable for levelling with tilting levels ANSWER DOWNLOAD EXAMIANS APP
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