What is the power source for the ignition exciter of a gas turbine engine?
Official USCG Answer & Rule Citation
Correct Answer: Option B — Ship's 115 volt AC system.
Gas turbine ignition exciters are designed to operate on standard shipboard power. The 115-volt AC system provides the necessary voltage to the transformer-rectifier circuit within the exciter, which then steps up the voltage to produce the high-energy discharge required for the spark igniter plugs.
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