LSIT Mathematics and Geomatics 4

Question 1

The Combined Scale Factor (CSF) used to convert ground distances to grid distances is computed as:

Accepted Answer

Grid Scale Factor × Elevation Factor

Answer

Elevation Factor ÷ Grid Scale Factor

Answer

Grid Scale Factor + Elevation Factor

Answer

Grid Scale Factor − Elevation Factor

Question 2

A random error in surveying measurements is best characterized as:

Accepted Answer

Unpredictable in sign and magnitude, following a normal distribution

Answer

Constant in magnitude and the same sign throughout an observation series

Answer

Caused by a specific identifiable source that can be corrected

Answer

Accumulated systematically with distance

Question 3

In the method of least squares adjustment, the condition minimized is:

Accepted Answer

The sum of the squares of the residuals (v'Pv)

Answer

The sum of the absolute values of the residuals

Answer

The largest single residual

Answer

The sum of the residuals

Question 4

The vanishing bearing in a closed traverse survey occurs when the latitude or departure of a course equals zero. If a course has a bearing of N 90°00' E, its latitude is:

Accepted Answer

0.00 ft

Answer

Equal to the course length

Answer

Equal to the departure

Answer

Negative and equal to the course length

Question 5

A digital elevation model (DEM) is most commonly used in GIS-based surveying to:

Accepted Answer

Represent the bare-earth terrain surface for topographic analysis

Answer

Store attribute data about land ownership parcels

Answer

Record GPS satellite orbital parameters

Answer

Display aerial photograph mosaics

Question 6

The parallax difference method in stereophotogrammetry is used to determine:

Accepted Answer

Elevation differences between points using the change in x-parallax

Answer

Horizontal distances from a single photograph

Answer

Camera tilt during aerial acquisition

Answer

Ground control point coordinates

Question 7

In Bowditch (Compass Rule) traverse adjustment, the correction to each course's latitude is proportional to:

Accepted Answer

The length of that course divided by the total traverse perimeter

Answer

The angle subtended by that course

Answer

The magnitude of that course's latitude

Answer

The inverse of that course's bearing