Surveying For a line AB the forebearing of AB and back bearing of AB differ by 180° none is correct both (A) and (B) are correct the forebearing of AB and back bearing of BA differ by 180° the forebearing of AB and back bearing of AB differ by 180° none is correct both (A) and (B) are correct the forebearing of AB and back bearing of BA differ by 180° ANSWER DOWNLOAD EXAMIANS APP
Surveying If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good cos H = tan λ/tan δ sin α = sin λ/sin δ All listed here sin A = cos δ/cos λ cos H = tan λ/tan δ sin α = sin λ/sin δ All listed here sin A = cos δ/cos λ ANSWER DOWNLOAD EXAMIANS APP
Surveying The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is f/H f sec θ/H f/H cos ½θ f/H sec θ f/H f sec θ/H f/H cos ½θ f/H sec θ 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 Principal point Plumb point Isocenter Perspective centre Principal point Plumb point Isocenter Perspective centre ANSWER DOWNLOAD EXAMIANS APP
Surveying If the image of a triangulation station of R.L. 500 m is 4 cm from the principal point of a vertical photo taken from an altitude of 2000 m, above datum, the height displacement will be 6 mm 10 mm 4 mm 2 mm 6 mm 10 mm 4 mm 2 mm ANSWER DOWNLOAD EXAMIANS APP
Surveying Theodolite is an instrument used for tightening the capstan-headed nuts of level tube measurement of both horizontal and vertical angles measurement of vertical angles only measurement of horizontal angles only tightening the capstan-headed nuts of level tube measurement of both horizontal and vertical angles measurement of vertical angles only measurement of horizontal angles only ANSWER DOWNLOAD EXAMIANS APP
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