ROC Antenna & Battery Quiz
1. What is the purpose of an antenna on a GMDSS vessel?
To transmit and receive radio signals for communication.
To provide GPS positioning information.
To detect the location of other vessels.
To store weather data.
2. What type of antenna is typically used for MF/HF communications?
Vertical dipole antenna.
Loop antenna.
Horizontal long-wire antenna.
Vertical monopole antenna.
3. How should an antenna be positioned to ensure optimal GMDSS performance?
Antenna should be placed as high as possible and in an open space.
Antenna should be placed below deck level.
Antenna should be placed close to metal structures.
Antenna should be placed near the engine room.
4. What is the recommended battery voltage for GMDSS equipment?
12 volts.
24 volts.
48 volts.
110 volts.
5. How often should the battery be tested in a GMDSS system?
Every month.
Every 6 months.
Annually.
Only when it fails.
6. What is the minimum battery capacity required for GMDSS equipment?
1 hour at maximum load.
2 hours at maximum load.
8 hours at minimum load.
12 hours at minimum load.
7. Which of the following is true regarding battery charging systems?
Batteries should be charged at a constant voltage.
Batteries should be charged with variable current.
Batteries should never be charged if they are under load.
Batteries should only be charged when the vessel is docked.
8. What should be done if a battery is found to be damaged?
Replace the battery immediately.
Attempt to recharge the battery and recheck.
Leave the battery in service until it fails completely.
Use the battery only for non-critical systems.
9. What is the maximum allowable time for a GMDSS battery to be disconnected from the system?
1 hour.
24 hours.
72 hours.
168 hours.
10. How should a battery be disposed of when it no longer functions?
By incineration.
By recycling according to local regulations.
By burying it in a safe location.
By returning it to the manufacturer.
11. What is the role of the battery charger in a GMDSS system?
To maintain the battery charge during operation.
To charge the battery only during non-operational hours.
To boost the battery’s performance for short bursts.
To monitor battery voltage and capacity.
12. When should battery capacity be tested on GMDSS equipment?
Before each voyage.
After each test of GMDSS equipment.
Whenever the battery seems undercharged.
Regularly, based on the manufacturer’s guidelines.
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