Q. The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is

View solution

Q. The scale of a vertical photograph of focal length f taken from height of H metres above M.S.L., at a point of reduced level h, is

View solution

Q. The correction applied to the measured base of length L is

View solution

Q. 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

View solution

Q. The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is

View solution

Q. The maximum error in radial line assumption, is

View solution

Q. 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

View solution

Q. The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is

View solution

Q. If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is

View solution

Q. For a spherical triangle ABC, pick up incorrect statement

View solution

Q. If δ is the declination of the Polaris and λ is the latitude of the place, the azimuth of the polaris, is

View solution

Q. The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is

View solution

Q. H is the flying height above mean ground level and f is the principal distance of a vertical photograph. The mean scale of the photographs is

View solution

Q. Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel

View solution

Q. Triangulation surveys are carried out for locating

View solution

Q. The movement of the projector in y-direction, introduces in the model a y-parallax

View solution

Q. The angle between the direction of star and the direction of earth's axis of rotation is called

View solution

Q. Pick up the correct statement from the following :

View solution

Q. The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

View solution

Q. If θ and δ be the latitude of an observer and declination of a heavenly body respectively, the upper culmination of the body will be south of zenith if its zenith distance, is

View solution