Surveying
The equation which is obtained by multiplying each equation by the coefficient of its unknowns and by adding the equations thus formed, is known as

Conditional equation
Normal equation
None of these
Observation equation

ANSWER DOWNLOAD EXAMIANS APP

Surveying
A ’level line’ is a

line passing through the center of cross hairs and the center of eye piece
line passing through the objective lens and the eye-piece of a dumpy or tilting level
line parallel to the mean spheriodal surface of earth
horizontal line

ANSWER DOWNLOAD EXAMIANS APP