WorksheetsACTIVITY 1 - BASIC SURVEYING
Total questions: 5
Worksheet time: 3mins
What is Electronic Distance Measurement (EDM) ?
Electronic Music Dance
Electromagnetic energy to determine the length of a line
Energy Distance Measurement
Electronic Distance Move
What does an Electronic Distance Measurement (EDM) use to determine the length of a line?
Mechanical Vibration
Sound Waves
Electronic energy
Electric current
What determines the nature of the "reflector" used in EDM?
Length of the line
Type of electromagnetic wave (EM)
Size of the instrument
Weather condition
In EDM, what happens to the electromagnetic energy after it reaches the reflector?
It is absorbed completely
It disappears
It is returned to the originating instrument
It is changed into heat
Why must temperature and barometric pressure be recorded during measurement?
To reduce human fatigue
To change the instrument battery
To find the prism height
To allow atmospheric correction later
