As shown in the illustration of a vessels navigational lighting circuit, if port running light "1" burns out, the trouble buzzer will sound and the port running light trouble lamp will illuminate. Switching to port running light "2" clears the alarm. If port running light "1" is replaced with a light of a smaller wattage and the circuit is switched back to port running light "1", which of the following is true? EL-0058
Official USCG Answer & Rule Citation
Correct Answer: Option A — There may be insufficient current to energize the trouble relay coil and to open the contacts to silence the alarm.
Under USCG National Maritime Center examination standards, the accepted correct answer is: There may be insufficient current to energize the trouble relay coil and to open the contacts to silence the alarm..
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.