Advanced Surveying Questions

• The correction applied to the measured base of length L is
• If the general ground level of any area is 10% of the flying height, the principal points may be used as the centres of radial directions for small scale mapping even in tilted photograph up to
• The elevation of the star at elongation is obtained by
• The angle between the direction of star and the direction of earth's axis of rotation is called
• The position of a heavenly body on the celestial sphere can be completely specified by
• By raising the z-column of right projector, maximum y-parallax is introduced in the model at
• The angle between the plane of the equator and the plane of the ecliptic, is known as obliquity of the ecliptic and its value is
• The relief displacement of a minar 72 m high on photograph is 7.2 mm and its top appears 10 cm away from principal point. The flying height of the camera, is
• In a tropical year, the number of sidereal days are
• At western elongation, the pole star moves
• 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
• Latitude of a place is the angular distance from
• The necessary geometrical condition for triangulation adjustment, is :
• Triangulation surveys are carried out for locating
• International date line is located along
• Accidental errors
• The movement of the projector in y-direction, introduces in the model a y-parallax
• While making astronomical observations, the observer is mainly concerned with
• The angle between the axis of earth and the vertical at the station of observation is called
• The stereo plotting instruments are generally manufactured on the principle of