NCEES MCQ Surveying 3

Question 1

In GPS surveying, dilution of precision (DOP) refers to:

Accepted Answer

The geometric effect of satellite configuration on position accuracy

Answer

DOP quantifies how satellite geometry amplifies ranging errors; a lower DOP value indicates a stronger geometric configuration and better accuracy.

Question 2

A stadia rod is held vertically on a point. The upper wire reads 4.85 ft and the lower wire reads 3.25 ft with the stadia interval factor K=100. What is the horizontal distance (instrument level, zero vertical angle)?

Accepted Answer

160 ft

Answer

Stadia interval = 4.85 – 3.25 = 1.60 ft; horizontal distance = K × interval = 100 × 1.60 = 160 ft.

Question 3

When using the compass rule to adjust a traverse, corrections are distributed proportionally based on:

Accepted Answer

The length of each course relative to the total perimeter

Answer

The compass (Bowditch) rule distributes the closure error to each course in proportion to its length as a fraction of the total traverse perimeter.

Question 4

In photogrammetry, the flying height above ground is 6,000 ft and the camera focal length is 6 inches. What is the photo scale denominator?

Accepted Answer

1:12,000

Answer

Scale = f / H = (6/12) ft / 6,000 ft = 0.5/6,000 = 1/12,000.

Question 5

The legal description 'NW¼ of the SW¼ of Section 12' encompasses how many acres?

Accepted Answer

40 acres

Answer

A full section = 640 acres; the SW¼ = 160 acres; the NW¼ of that = 40 acres.

NCEES Practice Test

NCEES Practice Test

NCEES MCQ Surveying 3