Surveying The elevation of the star at elongation is obtained by sin α = sin φ sec δ sin α = cos φ cosec δ sin α = cos φ sec δ sin α = sin φ cosec δ sin α = sin φ sec δ sin α = cos φ cosec δ sin α = cos φ sec δ sin α = sin φ cosec δ 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 suitable contour interval for a map with scale 1 : 10000 is 5 m 20 m 2 m 10 m 5 m 20 m 2 m 10 m ANSWER DOWNLOAD EXAMIANS APP
Surveying If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is 23° S 13° E 13° W 77° N 23° S 13° E 13° W 77° N ANSWER DOWNLOAD EXAMIANS APP
Surveying The angle between the observer's meridian and declination circle of a heavenly body, is known as Azimuth Hour angle Right ascension Declination Azimuth Hour angle Right ascension Declination ANSWER DOWNLOAD EXAMIANS APP
Surveying To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30,000, with a camera of 30 cm focal length, the flying height is 4000 m 7000 m 5000 m 6000 m 4000 m 7000 m 5000 m 6000 m ANSWER DOWNLOAD EXAMIANS APP
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