Which of the following scale is the smallest one
The accuracy of measurement in chain surveying does not depend upon:
Cross-staff is used for :
When 1cm on a map represents 10m on the ground, the representative fraction of the scale is
The distance between two brass rings in a surveyor's chain is
Surveyor's chain or Gunter's chain is 66-foot (20.117 m) chain is divided into 100 links, usually marked off into groups of 10 by brass rings or tags which simplify intermediate measurement. Each link is thus 7.92 inches (20 cm) long.
In a traverse survey, closing error means
The following bearing were observed while traversing with a compass, which stations are affected by local attraction ?
A sewer is laid from a manhole A to a manhole B, 250 m away along a gradient of 1 in 125. If the reduced level of the invert at A is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at B, is
The sum of the interior angles of a closed traverse is equal to :
The instrument used for accurate centering in plane table surveying is :
The best method of interpolation of contour is by
Levelling deals with measurement in
The correction in elevations due to the curvature and refraction is proportional to :
Where R is the radius of curvature of Earth and D is the horizontal distance.
Intersection method in plane table surveying is N most suitable for :
Mean Sea level (MSL) adopted by survey of India for reference is located at ?
Agate cap is fittted with a
Size of a theordolite is specified by
A telescope is said to be inverted if its
For which of the following permanent adjustments of theodolite, the spire test is used ?
A 'level line' is a
The following sights are taken on a 'turning point'
An ideal vertical curve to join two gradients, is
The rise and fall method
As applied to staff readings, the corrections for curvature and refraction are respectively
Hydrographic surveys deal with the mapping of