PS Surveying Methods & Techniques 4

Question 1

The 'double-meridian distance' (DMD) method is primarily used to compute:

Accepted Answer

Area of a closed traverse

Answer

The DMD method is a classical computational technique used to calculate the area enclosed by a closed traverse using latitudes and departures.

Question 2

The precision of a traverse is expressed as a ratio of:

Accepted Answer

Linear closure to total perimeter length

Answer

Traverse precision is stated as a ratio of the linear closure error to the total perimeter length (e.g., 1:10,000), after balancing angles but before adjusting latitudes and departures.

Question 3

When using a hand level to determine elevation differences over rough terrain, the most significant source of error is:

Accepted Answer

Leveling the instrument by eye

Answer

A hand level is held and leveled by eye, introducing significant personal error in establishing a truly horizontal line of sight.

Question 4

The astronomic azimuth of a line is determined by observing:

Accepted Answer

A celestial body such as the sun or Polaris

Answer

Astronomic azimuth is determined by observing celestial bodies (sun, Polaris, or other stars) and computing the direction based on time, location, and the body's ephemeris data.

Question 5

In photogrammetric surveying, the 'flying height' above the datum divided by the camera focal length equals:

Accepted Answer

Photo scale denominator

Answer

Photo scale = f / H, where f is the focal length and H is the flying height above datum; thus H/f equals the scale denominator.

(PS) Professional Licensed Surveyor Practice Test

(PS) Professional Licensed Surveyor Practice Test

PS Surveying Methods & Techniques 4