Related Questions

The necessary geometrical condition for triangulation adjustment is:
A The sum of the angles around a station should be 360°
B The sum of the three angles of a plane triangle should be 180°
C The sum of the eight angles of a braced quadrilateral should be 360°
D All the above
Triangulation surveys are carried out for locating
A Control points for surveys of large areas
B Control points for photogrammetric surveys
C Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
D All the above
The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as
A Satellite station
B Eccentric station
C False station
D Pivot station
In triangulation surveys
A The area is divided into triangular figures
B Control stations are located from which detailed surveys are carried out
C Sides are not measured excepting the base line
D All the above
Triangulation surveys are carried out for providing
A Planimetric control
B Height control
C Both planimetric and height control
D None of these
The station where observations are not made, but the angles at the station are used in triangulation series, is known as
A Satellite station
B Subsidiary station
C Pivot station
D Main station
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
A Silver metal
B Duralumin
C Hastelloy
D Invar
These are special installations of stone or concrete marking the locations of points accurately determined by precise surveying:
A Topographic marks
B Hatches
C Monuments
D Pillars
Local attraction in compass surveying may exist due to
A incorrect levelling of the magnetic needle
B loss of magnetism of the needle
C friction of the needle at the pivot
D presence of magnetic substances near the instrument
Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?
A radiation
B intersection
C traversing
D resection

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