FUNDAMENTAL SURVEYING Measurement and Data Collection 3

Question 1

The sensitivity of a level bubble is expressed as the angle subtended per division. A 20″/2mm bubble is considered:

Accepted Answer

Very sensitive

Answer

Insensitive

Answer

Moderately sensitive

Answer

Oversensitive for field use

Question 2

What is a turning point (TP) in differential leveling?

Accepted Answer

An intermediate point used to carry elevations forward

Answer

The starting benchmark

Answer

The closing benchmark

Answer

A point where the traverse changes direction

Question 3

What type of error is eliminated by observing both face-left and face-right with a theodolite?

Accepted Answer

Systematic errors including collimation and trunnion axis errors

Answer

Random errors

Answer

Blunders only

Answer

Atmospheric refraction

Question 4

In GNSS surveying, what is 'PDOP' and why does it matter?

Accepted Answer

Position Dilution of Precision — lower values indicate better satellite geometry and higher accuracy

Answer

Phase Delay of Position — affects carrier-phase solutions

Answer

Partial Data Output Protocol — controls data recording

Answer

Position Data Output Precision — a receiver specification

Question 5

What is the primary advantage of using RTK (Real-Time Kinematic) GNSS over static GNSS?

Accepted Answer

Real-time centimeter-level positions without post-processing

Answer

Higher accuracy

Answer

Works indoors

Answer

Does not require a base station

Question 6

What is a geodetic datum?

Accepted Answer

A mathematical reference surface and coordinate system used to define positions on Earth

Answer

A physical benchmark in the ground

Answer

A type of surveying instrument

Answer

The legal boundary of a parcel