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/S h (tan α + tan β)/S h tan β/S h (tan α - tan β)/S h tan α/S h (tan α + tan β)/S h tan β/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 is not suitable for levelling with tilting levels provides a check on the reduction of intermediate point levels quicker and less tedious for large number of intermediate sights is less accurate than height of instrument method is not suitable for levelling with tilting levels provides a check on the reduction of intermediate point levels ANSWER DOWNLOAD EXAMIANS APP
Surveying If a tripod settles in the interval that elapses between taking a back sight reading and the following foresight reading, then the elevation of turning point will decrease either ‘A’ or ‘B’ increase not change decrease either ‘A’ or ‘B’ increase not change ANSWER DOWNLOAD EXAMIANS APP
Surveying The true and mean suns occupy the same meridian at the same time on All of these June 14 April 15 September 1 All of these June 14 April 15 September 1 ANSWER DOWNLOAD EXAMIANS APP
Surveying Circumpolar stars Remain always above the horizon Rotate round the celestial pole Are seldom seen near the pole star Rotate round the North Pole Remain always above the horizon Rotate round the celestial pole Are seldom seen near the pole star Rotate round the North Pole ANSWER DOWNLOAD EXAMIANS APP
Surveying The line of collimation method of reduction of levels, does not provide a check on Fore sights Back sights Reduced levels Intermediate sights Fore sights Back sights Reduced levels Intermediate sights ANSWER DOWNLOAD EXAMIANS APP
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