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- Third Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q536 - Electrical, Electronic, & Control Engineering
543. 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
Replacing a navigation light with a lower wattage bulb may result in insufficient current to energize the trouble relay, preventing the alarm from silencing.
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