Gas Turbines USCG Question #531 (Set 9)

How many fuel igniters would be installed on the marine gas turbine engine shown in the illustration? Illustration GT-0017

USCG Exam Illustration GT-0017
USCG Examination Diagram: Illustration GT-0017
Official USCG Answer & Rule Citation

Correct Answer: Option B — 2

Marine gas turbine engines typically utilize redundant ignition systems to ensure reliable light-off. Illustration GT-0017 depicts the standard configuration for the LM2500, which incorporates two high-energy ignition plugs positioned to ensure consistent flame propagation across the combustion chamber during the starting sequence, minimizing the risk of a hung start.

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