In the ignition system of a gas turbine engine, how is optimum spark achieved?

Correct Answer: Option B — Concentration of maximum energy in minimum time.

Optimum ignition in gas turbines requires a high-intensity spark to ensure reliable light-off. This is achieved by concentrating the maximum available electrical energy into the shortest possible time interval, creating a high-temperature plasma arc capable of igniting the fuel-air mixture even under high-velocity airflow conditions.