FUNDAMENTAL SURVEYING Traversing and Coordinate Geometry 2

Question 1

What does 'inverse' computation in surveying determine?

Accepted Answer

The bearing and distance between two known coordinate points

Answer

An inverse computation uses two known coordinate points to compute the bearing (direction) and distance between them.

Question 2

Given coordinates N1000, E1000 and N1000, E1500, what is the bearing of the line?

Accepted Answer

N 90° E (due East)

Answer

Both points have the same northing but the easting increases, so the line runs due East (azimuth 90°, bearing N 90° E).

Question 3

What is the purpose of a 'link traverse'?

Accepted Answer

To connect two known control points at different ends

Answer

A link (open) traverse connects two known control points, and closure is evaluated against the known end-point coordinates.

Question 4

In COGO (Coordinate Geometry), a 'radial survey' (radiation method) establishes points by:

Accepted Answer

Measuring direction and distance from a single instrument station to each point

Answer

Radiation occupies one station and measures angles and distances to multiple points, computing each point's coordinates from that single setup.

Question 5

What is the formula for computing the bearing from point A to point B using inverse computation?

Accepted Answer

tan(bearing) = ΔE / ΔN

Answer

The reference bearing angle is computed as arctan(|ΔE| / |ΔN|), with quadrant determined by the signs of ΔN and ΔE.

FUNDAMENTAL SURVEYING Practice Test