Surveying
The great circle which passes through the zenith, nadir and the poles, is known as

None of these
Vertical circle
Prime vertical
Meridian

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The error due to eccentricity of inner and outer axes can be eliminated by

taking both face observations and taking the mean of the two
double sighting
taking mean of several readings distributed over different portions of the graduated circle
reading both verniers and taking the mean of the two

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

All of these
By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
By adding their longitudes if places are in the different hemispheres
By subtracting their longitudes if places are in the same hemisphere

ANSWER DOWNLOAD EXAMIANS APP