Surveying If ‘f’ is the focal length of the camera lens and ‘θ’ is the angle of tilt, the distance of the plumb point from the principal point will be f tan θ f sec θ f cos θ f sin θ f tan θ f sec θ f cos θ f sin θ ANSWER DOWNLOAD EXAMIANS APP
Surveying The great circle whose plane is perpendicular to the axis of rotation of the earth, is called All of these Equator Terrestrial equator 0° latitude All of these Equator Terrestrial equator 0° latitude ANSWER DOWNLOAD EXAMIANS APP
Surveying If the general ground level of any area is 10% of the flying height, the principal points may be used as the centers of radial directions for small scale mapping even in tilted photograph up to 2° 4° 3° 1° 2° 4° 3° 1° ANSWER DOWNLOAD EXAMIANS APP
Surveying Which of the following errors is not eliminated by the method of repetition of horizontal angle measurement ? error due to wrong adjustment of line of collimation and trunnion axis error due to eccentricity of verniers error due to inaccurate graduation error due to displacement of station signals error due to wrong adjustment of line of collimation and trunnion axis error due to eccentricity of verniers error due to inaccurate graduation error due to displacement of station signals 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. t. (f/H) i = v. t. H/f i = v. f/t. H i = t. H/v. f i = v. t. (f/H) i = v. t. H/f i = v. f/t. H i = t. H/v. f ANSWER DOWNLOAD EXAMIANS APP
Surveying For a well-conditioned triangle, no angle should be less than 20° 45° 30° 60° 20° 45° 30° 60° ANSWER DOWNLOAD EXAMIANS APP