Surveying The method of surveying by triangulation was first introduced by the Dutchman Snell in 1615 1600 1650 1630 1615 1600 1650 1630 ANSWER DOWNLOAD EXAMIANS APP
Surveying The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as Plumb point Isocenter Perspective centre Principal point Plumb point Isocenter Perspective centre Principal point 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 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 h tan α/S ANSWER DOWNLOAD EXAMIANS APP
Surveying The point on the celestial sphere vertically below the observer's position, is called Nadir Celestial point Zenith Pole Nadir Celestial point Zenith Pole ANSWER DOWNLOAD EXAMIANS APP
Surveying In the quadrantal bearing system, a whole circle bearing of 293° 30′ can be expressed as N23°30’W N66°30’W W23°30’N S113°30’N N23°30’W N66°30’W W23°30’N S113°30’N ANSWER DOWNLOAD EXAMIANS APP
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 = H/bf B =f/bH B = b/fH B = bH/f B = H/bf B =f/bH B = b/fH B = bH/f ANSWER DOWNLOAD EXAMIANS APP
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