Question 64Gas Turbine - Assistant Engineer

The correct answer is B) Ship's 115 volt AC system. The ignition exciter of a gas turbine engine on a ship is typically powered by the ship's 115 volt AC electrical system. This is because the ignition exciter requires a stable and reliable AC power source to generate the high-voltage electrical pulses needed to ignite the fuel-air mixture in the gas turbine engine. The ship's 115 volt AC system is designed to provide the necessary power and voltage for this critical engine component. The other options are incorrect because they do not match the power requirements of the ignition exciter. The ship's 400 Hz system (A) is not suitable, the 28 volt DC system (C) is too low in voltage, and using four lead-acid batteries (D) would not provide the necessary stable AC power.