GMDSS · 605 questions
Element 3 - USCG Exam Questions
General radiotelephone operator knowledge: radio law and regulations, operating procedures, and radio equipment fundamentals.
Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.
All Element 3 questions
Questions 601–605 of 605 · page 7 of 7
- #601 What is the purpose of not putting sharp corners on the ground leads within a building?
- #602 Should you use a power drill without eye protection?
- #603 What class of fire is one that is caused by an electrical short circuit and what is the preferred substance used to extinguish that type of fire?
- #604 Do shorted-stub lightning protectors work at all frequencies?
- #605 What is a GFI electrical socket used for?
Element 3 questions: what to expect
Q How many Element 3 questions are in the GMDSS pool?
There are 605 Element 3 questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its Element 3 module from the same pool.
Q What score do I need to pass the Element 3 module?
Most USCG exam modules, including Element 3, require 70 percent to pass. Rules of the Road modules require 90 percent.
Q Are these the real USCG Element 3 exam questions?
Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.
About the GMDSS question pool
These are the published GMDSS Element 3 questions covering general radiotelephone operator knowledge: radio law, operating procedures, and equipment fundamentals.