A 'level line' is a-
Line parallel to the mean spheriodal surface of earth
Line parallel to the mean spheroidal surface of earth - This definition accurately describes a level line. Therefore, the definition that aligns with the concept of a line of constant elevation that accounts for the Earth's shape is a line parallel to the mean spheroidal surface of the earth. Therefore, the correct answer is Line parallel to the mean spheriodal surface of earth.
Important Questions from Levelling
Calculate the true reduced level (m) of a point A after correcting the refraction and curvature. The staff reading at the point taken from an instrument set at a distance of 2 km from the point A is 2.56 m. The staff reading from the same station on a bench mark of reduced level is 100 m is 1.34 m.
The dumpy level is most suitable for levelling survey:
Levelling in which staff and readings and the distance between the points is required is called:
In permanent adjustment of levels, two peg test is done to correct:
In a levelling work, seven readings were taken with a level as - 1.42, 1.57, 0.765, 1.11, 1.95, 2.9, and 1.825 m. If the instrument was shifted after the third and fifth readings, the readings recorded under the fore sight column will be:
