What is the power source for the ignition exciter of a GTE?

Correct Answer: Option D — Ship's 115 volt AC system

Ignition exciters in gas turbine engines require a stable AC input, typically 115 volts AC, to operate the internal transformer and capacitor circuit. This high-voltage output is necessary to bridge the gap of the spark igniter and initiate combustion within the high-pressure environment of the combustor.