In the ignition system of a gas turbine...

Question 1 / 270705eccef9fbacbc34ba4d46b59

Question 1 of 270705eccef9fbacbc34ba4d46b59

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

Question 1 of 27070

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

🔍 Key Concepts

• Energy and time relationship in ignition systems (power is energy over time) • Purpose of a spark in a gas turbine: to reliably ignite the fuel‑air mixture during start • Effect of high energy vs. low energy and short vs. long duration on spark intensity

💭 Think About

• Think about what kind of spark is needed to jump the plug gap and ignite a high‑velocity, high‑pressure fuel‑air mixture in a turbine combustor: should it be brief and intense, or long and weak? • If you keep the same total energy but spread it over a longer time, what happens to the peak power (spark intensity)? • In a marginal ignition environment (poor atomization, low temperature, high airflow), which combination of energy and time gives the strongest, most reliable ignition kernel?

✅ Before You Answer

• Compare maximum vs. minimum energy first: which is more likely to give a strong, reliable spark? • Then compare maximum vs. minimum time: for the same energy, which gives higher instantaneous power (energy per unit time)? • Eliminate the options that obviously describe a weak, low-intensity spark, since that would not be called "optimum" for turbine ignition.

Question 1 of 27070

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

Concentration of maximum energy in maximum time

Concentration of maximum energy in minimum time

Concentration of minimum energy in maximum time

Concentration of minimum energy in minimum time

Question 1 / 270705eccef9fbacbc34ba4d46b59

Question 1 of 270705eccef9fbacbc34ba4d46b59

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

Back

Question 1 of 27070

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