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 β/S 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 ANSWER DOWNLOAD EXAMIANS APP
Surveying The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is f2 3f2 2f2 ½f f2 3f2 2f2 ½f ANSWER DOWNLOAD EXAMIANS APP
Surveying The height displacement on a vertical photograph Increases as the ground elevation increases Increases as the horizontal distance increases from the principal point Decreases as the flying height increases All listed here Increases as the ground elevation increases Increases as the horizontal distance increases from the principal point Decreases as the flying height increases All listed here ANSWER DOWNLOAD EXAMIANS APP
Surveying The prismatic compass and surveyor’s compass both give QB of a line and WCB of a line give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively both give WCB of a line both give QB of a line both give QB of a line and WCB of a line give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively both give WCB of a line both give QB of a line ANSWER DOWNLOAD EXAMIANS APP
Surveying The adjustment of horizontal cross hair is required particularly when the instrument is used for prolonging a straight line leveling measurement of horizontal angles All of these prolonging a straight line leveling measurement of horizontal angles All of these ANSWER DOWNLOAD EXAMIANS APP
Surveying If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement i = v. f/t. H i = t. H/v. f i = v. t. H/f i = v. t. (f/H) i = v. f/t. H i = t. H/v. f i = v. t. H/f i = v. t. (f/H) ANSWER DOWNLOAD EXAMIANS APP
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