Surveying
The difference in longitude of two places expressed in time is equal to the difference in their

Sidereal time
All listed here
Apparent solar time
Mean solar time

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The meridian of a place is

An arc of the great circle which passes through the place and is perpendicular to the equator
A semi-circle which passes through the place and is terminated at the poles
A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place
A great circle passing through the place and the poles

ANSWER DOWNLOAD EXAMIANS APP