What does the electronic symbol of figure "9" represent? EL-0065
Official USCG Answer & Rule Citation
Correct Answer: Option A — triac thyristor
The symbol for a triac consists of two thyristors connected in inverse parallel with a single gate terminal. It is a bidirectional semiconductor device capable of conducting current in both directions, making it ideal for AC power control applications such as lighting dimmers and motor speed controllers in marine systems.
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