Surveying
With standard meridian as 82° 30' E the standard time at longitude 90° E is 8 h 30 m. The local mean time at the place will be

8 h 00 m
7 h 00 m
7 h 30 m
9 h 00 m

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

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

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give QB of a line and WCB of a line
both give WCB of a line

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Surveying
The necessary geometrical condition for triangulation adjustment is:

All listed here
The sum of the angles around a station should be 360°
The sum of the eight angles of a braced quadrilateral should be 360°
The sum of the three angles of a plane triangle should be 180°

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