LSIT Mathematics and Geomatics 3

Question 1

A horizontal curve has a radius of 1,200 ft and a central angle (Δ) of 24°30'. The tangent length T equals:

Accepted Answer

261.5 ft

Answer

512.4 ft

Answer

523.0 ft

Answer

130.8 ft

Question 2

The relationship between geodetic height (h), orthometric height (H), and geoid undulation (N) is:

Accepted Answer

h = H + N

Answer

H = h + N

Answer

N = h + H

Answer

h = H × N

Question 3

A closed traverse has 5 sides. The sum of interior angles should equal:

Accepted Answer

540°

Answer

360°

Answer

720°

Answer

900°

Question 4

In coordinate geometry (COGO), the inverse computation determines:

Accepted Answer

Distance and bearing between two known coordinate pairs

Answer

Unknown coordinates from a known point using bearing and distance

Answer

Intersection of two bearing lines

Answer

Area of a polygon from coordinates

Question 5

The scale factor in a State Plane Coordinate System (SPCS) is applied to account for:

Accepted Answer

The difference between grid distances on the projection plane and geodetic distances on the ellipsoid

Answer

Elevation differences between survey stations

Answer

Magnetic declination corrections

Answer

Temperature effects on steel tapes

Question 6

A surveyor uses a total station that measures slope distance as 487.34 ft at a vertical angle of +5°22'. The horizontal distance is approximately:

Accepted Answer

485.51 ft

Answer

489.18 ft

Answer

487.34 ft

Answer

483.67 ft

Question 7

In photogrammetry, the principal distance (c) of a camera is most accurately defined as:

Accepted Answer

The perpendicular distance from the rear nodal point of the lens to the image plane

Answer

The focal length printed on the camera body

Answer

The distance from the camera to the ground

Answer

The baseline distance between two exposure stations