LSIT Mathematics and Geomatics 2

Question 1

A traverse has a departure closure error of +0.42 ft and a latitude closure error of -0.56 ft. What is the linear closure error?

Accepted Answer

0.70 ft

Answer

0.98 ft

Answer

0.14 ft

Answer

0.49 ft

Question 2

In a geodetic survey, the geoid is best described as:

Accepted Answer

The equipotential surface of Earth's gravity field approximating mean sea level

Answer

A mathematical ellipsoid fitted to Earth's surface

Answer

The topographic surface of the land

Answer

A sphere with Earth's mean radius

Question 3

If a 100-ft steel tape has a tension correction of +0.012 ft when pulled at 20 lb instead of its standard 10 lb, what is the tape's cross-sectional area if E = 30,000,000 psi and the tape is 100 ft long?

Accepted Answer

0.00048 in²

Answer

0.0048 in²

Answer

0.048 in²

Answer

0.0024 in²

Question 4

The term 'Normal Section' in geodetic surveying refers to:

Accepted Answer

A plane containing the normal to the ellipsoid at one station and passing through another station

Answer

A cross-section perpendicular to a survey baseline

Answer

The average of forward and back azimuths

Answer

A section taken at right angles to contour lines

Question 5

A vertical curve connects a +3.5% grade with a -2.5% grade. The algebraic difference of grades (A) equals:

Accepted Answer

6.0%

Answer

-6.0%

Answer

1.0%

Answer

-1.0%

Question 6

In GPS surveying, PDOP (Position Dilution of Precision) primarily reflects:

Accepted Answer

The geometric strength of the satellite configuration

Answer

Atmospheric delay in signal transmission

Answer

Receiver clock bias

Answer

Multipath error magnitude

Question 7

A level rod reading of 8.72 ft is taken on a benchmark with a known elevation of 452.30 ft. The height of instrument (HI) is:

Accepted Answer

461.02 ft

Answer

443.58 ft

Answer

452.30 ft

Answer

460.00 ft