What are the two broad categories of ignition systems used in turbine engines?

What are the two broad categories of ignition systems used in turbine engines?

• A. Capacitive and inductive
• B. Low-pressure and high-pressure
• C. High-voltage and low-voltage
• D. Analog and digital

Answer: (C)

Ignition systems in turbine engines are categorized by the voltage delivered to the spark plug: high-voltage and low-voltage. The spark must ionize the plug gap to ignite the fuel-air mixture, and the way that energy is delivered differs in voltage levels. A high-voltage system provides a strong, high-potential pulse across the gap, giving reliable ignition across a wide range of start conditions. A low-voltage system delivers ignition with a lower voltage but sufficient energy, often via higher current or longer pulse, and is used in designs or electrical setups where lower voltage is advantageous. The other terms describe different aspects (energy storage, pressure, or control type) and do not define the primary way turbine ignition energy is presented to the spark plug.

Ignition systems in turbine engines are categorized by the voltage delivered to the spark plug: high-voltage and low-voltage. The spark must ionize the plug gap to ignite the fuel-air mixture, and the way that energy is delivered differs in voltage levels. A high-voltage system provides a strong, high-potential pulse across the gap, giving reliable ignition across a wide range of start conditions. A low-voltage system delivers ignition with a lower voltage but sufficient energy, often via higher current or longer pulse, and is used in designs or electrical setups where lower voltage is advantageous. The other terms describe different aspects (energy storage, pressure, or control type) and do not define the primary way turbine ignition energy is presented to the spark plug.