RPLS Surveying Principles and Methods 4

Question 1

What is the difference between a 'geodetic' survey and a 'plane' survey?

Accepted Answer

Geodetic surveys account for Earth's curvature and gravity; plane surveys treat the surface as flat

Answer

Geodetic surveys use GPS while plane surveys use total stations

Answer

Geodetic surveys measure only vertical control; plane surveys measure only horizontal

Answer

Plane surveys require greater accuracy than geodetic surveys

Question 2

In stadia surveying, a rod intercept of 1.35 m is observed with a stadia constant K=100 and C=0. What is the horizontal distance to the rod?

Accepted Answer

135 m

Answer

1.35 m

Answer

13.5 m

Answer

1350 m

Question 3

What is 'reciprocal vertical angles' observation used for in trigonometric leveling?

Accepted Answer

Eliminating atmospheric refraction and Earth curvature errors by averaging angles observed simultaneously from both ends

Answer

Determining magnetic declination between two stations

Answer

Measuring the height of instrument automatically

Answer

Computing the azimuth between two control points

Question 4

A survey monument is described as being at 'witness corner' position. What does this indicate?

Accepted Answer

The original corner was lost and this accessory monument references its position

Answer

The monument marks the center of a section

Answer

It is a temporary benchmark for construction

Answer

It marks the point of beginning of a deed description

Question 5

What does 'GNSS' stand for, and how does it differ from GPS?

Accepted Answer

Global Navigation Satellite System; GNSS includes GPS plus other satellite systems like GLONASS, Galileo, and BeiDou

Answer

Ground Network Survey System; GNSS uses ground stations rather than satellites

Answer

Geodetic Network Surveying Standard; GNSS refers to high-accuracy GPS only

Answer

Global Navigation Survey Standard; GNSS applies only to marine positioning

Question 6

When balancing a traverse by the Compass Rule (Bowditch), corrections are distributed proportionally to what?

Accepted Answer

The length of each course relative to the total traverse perimeter

Answer

The square of each course length

Answer

The observed angle at each station

Answer

The departure and latitude of each course equally

Question 7

What is the purpose of the 'check shot' in a control survey network?

Accepted Answer

An independent measurement to an already-known point to verify data quality before relying on new control

Answer

A back-azimuth observation to verify instrument orientation

Answer

A reading taken at the start of each day to zero the instrument

Answer

A foresight taken to the next benchmark in differential leveling