Aircraft Powerplant Technician Engine Practice Questions

During an engine run-up, an abnormal vibration is detected. What should be done?

• AA. Continue the test
• BB. Ignore the vibration
• CC. Increase RPM
• DD. Shut down and inspect

A newly installed turbine engine has low oil pressure. What could be the cause?

• AA. Clogged oil filter
• BB. High ambient temperature
• CC. Excessive load
• DD. Incorrect oil type

What is the primary purpose of the fuel control unit in a gas turbine engine?

• AA. Monitor exhaust temperature
• BB. Regulate fuel pressure
• CC. Control engine speed
• DD. Manage fuel flow

An aircraft's engine overheats during a climb. What is the likely cause?

• AA. Incorrect fuel mixture
• BB. High cabin pressure
• CC. Insufficient airflow
• DD. Low fuel quality

An engine's RPM fluctuates during operation. What might be the problem?

• AA. All of the above
• BB. Fuel contamination
• CC. Oil viscosity issues
• DD. Ignition system failure

After replacing an engine mount, what should be done next?

• AA. Check for proper alignment
• BB. Clean the engine
• CC. Conduct a test flight
• DD. Inspect fuel lines

What is the main function of the ignition system in a piston engine?

• AA. To ignite the fuel-air mix
• BB. To cool the engine
• CC. To monitor engine speed
• DD. To regulate fuel flow