Surveying
The plane at right angle to the zenith-nadir line and passing through the centre of the earth, is called

Celestial horizon
True horizon
All of these
Rational horizon

ANSWER DOWNLOAD EXAMIANS APP

Surveying
A ’level line’ is a

horizontal line
line parallel to the mean spheriodal surface of earth
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

ANSWER DOWNLOAD EXAMIANS APP

Surveying
For mapping any country

Primary triangles are broken down into secondary triangles of somewhat lesser accuracy
Geodetic triangulation of greatest possible sides and accuracy is carried out
Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
All listed here

ANSWER DOWNLOAD EXAMIANS APP