NIFE ENGINES EXAM REPORTED
QUESTIONS WITH CORRECT
ANSWERS
What happens to subsonic airflow in a divergent opening? - Answer-Velocity decreases
and pressure increases.
How does supersonic airflow differ from subsonic airflow? - Answer-It is more
compressible and behaves opposite Bernoulli's subsonic rules.
What happens to supersonic airflow in a convergent opening? - Answer-Velocity
decreases and pressure increases.
What happens to supersonic airflow in a divergent opening? - Answer-Velocity
increases and pressure decreases.
What is a nozzle? - Answer-A device that increases airflow velocity and decreases
pressure.
How does nozzle shape depend on airflow speed? - Answer-Subsonic uses convergent
shape, supersonic uses divergent shape.
What is a diffuser? - Answer-A device that decreases airflow velocity and increases
pressure.
How does diffuser shape depend on airflow speed? - Answer-Subsonic uses divergent
shape, supersonic uses convergent shape.
What is a gas generator? - Answer-A component that produces high-energy airflow to
create thrust in a gas turbine engine.
What are the three main sections of a gas generator? - Answer-Compressor,
combustion chamber, and turbine.
What is the function of the compressor? - Answer-Increase pressure, temperature,
velocity, and total pressure.
What is the function of the combustion chamber? - Answer-Burn fuel-air mixture to
greatly increase temperature and velocity.
QUESTIONS WITH CORRECT
ANSWERS
What happens to subsonic airflow in a divergent opening? - Answer-Velocity decreases
and pressure increases.
How does supersonic airflow differ from subsonic airflow? - Answer-It is more
compressible and behaves opposite Bernoulli's subsonic rules.
What happens to supersonic airflow in a convergent opening? - Answer-Velocity
decreases and pressure increases.
What happens to supersonic airflow in a divergent opening? - Answer-Velocity
increases and pressure decreases.
What is a nozzle? - Answer-A device that increases airflow velocity and decreases
pressure.
How does nozzle shape depend on airflow speed? - Answer-Subsonic uses convergent
shape, supersonic uses divergent shape.
What is a diffuser? - Answer-A device that decreases airflow velocity and increases
pressure.
How does diffuser shape depend on airflow speed? - Answer-Subsonic uses divergent
shape, supersonic uses convergent shape.
What is a gas generator? - Answer-A component that produces high-energy airflow to
create thrust in a gas turbine engine.
What are the three main sections of a gas generator? - Answer-Compressor,
combustion chamber, and turbine.
What is the function of the compressor? - Answer-Increase pressure, temperature,
velocity, and total pressure.
What is the function of the combustion chamber? - Answer-Burn fuel-air mixture to
greatly increase temperature and velocity.
