CLT Practice Exam| 103 QUESTIONS| WITH COMPLETE ANSWERS

CLT Practice Exam| 103
QUESTIONS| WITH COMPLETE
ANSWERS
Course
CLT
Question 1
A surveyor is asked to establish a horizontal control point for a construction project using Global
Navigation Satellite System (GNSS) equipment. Which method provides the highest positional
accuracy?
A. Autonomous (stand-alone) GNSS
B. Differential GNSS (DGNSS)
C. Real-Time Kinematic (RTK) GNSS
D. Recreational GPS navigation
Correct Answer: C. Real-Time Kinematic (RTK) GNSS
Complete Answer
RTK GNSS uses corrections transmitted from a base station or network to a rover receiver,
allowing centimeter-level positioning accuracy. It is widely used in construction surveying,
layout, and engineering projects where precise measurements are required.
 Autonomous GNSS typically provides meter-level accuracy.
 DGNSS improves accuracy but generally does not achieve RTK precision.
 Recreational GPS is unsuitable for professional surveying.


Question 2
During leveling operations, what is the primary purpose of a benchmark?
A. To locate underground utilities
B. To provide a permanent elevation reference
C. To determine property ownership
D. To calculate slope distance
Correct Answer: B. To provide a permanent elevation reference

,Complete Answer
A benchmark is a permanent point with a known elevation relative to a specified datum.
Surveyors use benchmarks to establish elevations throughout a project and ensure consistency
across measurements.


Question 3
Which surveying instrument measures both horizontal and vertical angles while also measuring
distances electronically?
A. Dumpy level
B. Total station
C. Measuring wheel
D. Surveyor's compass
Correct Answer: B. Total station
Complete Answer
A total station combines:
 Electronic Distance Measurement (EDM)
 Electronic angle measurement
 Data collection and storage
 Coordinate calculations
It has become the standard instrument for modern land and construction surveying.


Question 4
When using a steel measuring tape, which environmental factor most affects measurement
accuracy?
A. Wind direction
B. Air pressure
C. Temperature
D. Cloud cover

,Correct Answer: C. Temperature
Complete Answer
Steel expands when heated and contracts when cooled. Temperature corrections are necessary for
high-precision measurements because thermal expansion changes the tape length.


Question 5
The backsight reading in differential leveling is primarily used to:
A. Compute the height of the instrument
B. Determine slope distance
C. Calculate horizontal angles
D. Measure bearing
Correct Answer: A. Compute the height of the instrument
Complete Answer
The Height of Instrument (HI) is calculated as:
HI = Benchmark Elevation + Backsight
Once HI is known, foresight readings are subtracted to determine elevations of new points.


Question 6
Which type of error can usually be eliminated by careful observation and proper surveying
procedures?
A. Random error
B. Gross error (blunder)
C. Natural error
D. Instrument calibration error
Correct Answer: B. Gross error (blunder)
Complete Answer
Gross errors result from mistakes such as:
 Recording incorrect values

,  Misreading the instrument
 Incorrect instrument setup
 Mathematical mistakes
Proper training, careful procedures, and independent checks greatly reduce these errors.


Question 7
Why is a traverse adjusted after field measurements are completed?
A. To increase map scale
B. To distribute measurement errors throughout the traverse
C. To eliminate all surveying errors
D. To shorten fieldwork
Correct Answer: B. To distribute measurement errors throughout the traverse
Complete Answer
Even accurate field measurements contain small errors. Traverse adjustment methods, such as the
Compass Rule or Transit Rule, distribute closure errors proportionally to produce consistent
coordinates.


Question 8
Which coordinate system is most commonly used in modern engineering and construction
surveying?
A. Geographic latitude and longitude only
B. State Plane Coordinate System (SPCS)
C. Postal ZIP Code System
D. Township numbering only
Correct Answer: B. State Plane Coordinate System (SPCS)
Complete Answer
The State Plane Coordinate System provides highly accurate rectangular coordinates for
engineering, surveying, mapping, and construction projects within specific geographic zones.