Exam 6: Surveying and Mapping Techniques: Part B

The main principle of surveying is to work

The reduced bearing of a line is N 87° W. Its whole circle bearing is

Geodetic surveying is undertaken

While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is

Removal of parallax, may be achieved by focussing

The conventional sign shown in below figure represents a

Prismatic compass is considered more accurate than a surveyor's compass, because

A clinometer is used for

In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by

A relatively fixed point of known elevation above datum, is called

While measuring a chain line between two stations A and B intervened by a raised ground

In chain surveying tie lines are primarily provided

Imaginary line passing through points having equal magnetic declination is termed as

In chain surveying field work is limited to

The best method of interpolation of contours, is by

An imaginary line joining the points of equal elevation on the surface of the earth, represents

Cross hairs in surveying telescopes, are fitted

Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following

Closed contours of decreasing values towards their center, represent

Plotting of inaccessible points on a plane table, is done by