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

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

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations?

Measuring angle at one station and distance from other
Measuring angle and distance from one transit station
Measuring angles to the point from at least two stations
Measuring distance from two points on traverse line

ANSWER DOWNLOAD EXAMIANS APP