An arbitrary surface with reference to which the elevation of points are measured and compared, is called

Related MCQs

• Determining the relative positions of points on above or beneath the surface of the earth by means of direct or indirect measurements of distance and direction and elevation is called as _________
• The line joining the points having the same elevation above the datum surface, is called a
• An imaginary line joining the points of equal elevation on the surface of the earth, represents
• In order to fix up the directions of the survey lines in the compass survey, the horizontal angle between the survey line and a fixed line of reference is measured. This fixed line reference is the magnetic meridian.
• A fixed point of reference of known elevation is called
• The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
• It is required to find the difference in elevation between two points A and B. During levelling, it is found that the staff reading at B is more than the staff reading at A. It indicates that the point A is
• The points on a contour gradient will have the same elevation.
• A method of differential levelling is used in order to find the difference in elevation between two points when
• The method of surveying used for dtermining the relative height of points on the surface of the earth is called