AMS 274 TURBINES FINAL COMPREHENSIVE
SCRIPT 2026 QUESTIONS AND ANSWERS
GUARANTEED TO PASS
◉ Which engine variable is the most critical during turbine engine
operation? Answer: Turbine inlet temperature.
◉ What reduces blade vibration and improves airflow
characteristics in gas turbines? Answer: Shrouded turbine rotor
blades.
◉ Which turbine engine compressor offers the greatest advantages
for both starting flexibility and improved high-altitude
performance? Answer: Split-spool, axial-flow.
◉ Where must jet engine turbine blades removed for detailed
inspection be reinstalled? Answer: The same slot.
◉ What is an advantage of the centrifugal-flow compressor?
Answer: High pressure rise per stage.
◉ Where is the highest heat-to-metal contact in a jet engine?
Answer: Turbine inlet guide vanes.
,◉ What two elements make up the axial-flow compressor assembly?
Answer: Rotor and stator.
◉ What are the two types of centrifugal compressor impellers?
Answer: Single entry and double entry.
◉ What are the stationary blades between each set of rotating
blades in an axial-flow turbine engine compressor called? Answer:
Stators.
◉ What is the function of the stators in a turbine engine
compressor? Answer: To receive the air from each stage of the
compressor and deliver it to the next stage at the proper velocity,
direction, and pressure.
◉ What is the standard sea level pressure? Answer: 29.92" Hg.
◉ What is the standard sea-level atmospheric pressure in millibars?
Answer: 1013.2 millibars.
◉ What is the standard sea level temperature for computing the
power of a gas turbine engine? Answer: 59°F.
, ◉ What type of failures would you expect when aircraft turbine
blades are subjected to excessive heat stress? Answer: Stress
rupture.
◉ What is the purpose of the stator vanes at the discharge end of an
axial-flow compressor? Answer: To straighten the airflow and
eliminate turbulence.
◉ Why is compressor field cleaning performed on turbine engines?
Answer: To prevent engine performance degradation, increased fuel
costs, and damage or corrosion to gas path surfaces.
◉ When are hot section inspections for modern turbine engines
required? Answer: On a time or cycle basis.
◉ What is the purpose of the shrouds on the turbine blades of an
axial-flow engine? Answer: To reduce vibration.
◉ What does the first stage turbine drive in a dual axial-flow
compressor? Answer: N(2) compressor.
◉ What should be done initially if a turbine engine catches fire when
starting? Answer: Turn off the fuel and continue engine rotation
with the starter.
SCRIPT 2026 QUESTIONS AND ANSWERS
GUARANTEED TO PASS
◉ Which engine variable is the most critical during turbine engine
operation? Answer: Turbine inlet temperature.
◉ What reduces blade vibration and improves airflow
characteristics in gas turbines? Answer: Shrouded turbine rotor
blades.
◉ Which turbine engine compressor offers the greatest advantages
for both starting flexibility and improved high-altitude
performance? Answer: Split-spool, axial-flow.
◉ Where must jet engine turbine blades removed for detailed
inspection be reinstalled? Answer: The same slot.
◉ What is an advantage of the centrifugal-flow compressor?
Answer: High pressure rise per stage.
◉ Where is the highest heat-to-metal contact in a jet engine?
Answer: Turbine inlet guide vanes.
,◉ What two elements make up the axial-flow compressor assembly?
Answer: Rotor and stator.
◉ What are the two types of centrifugal compressor impellers?
Answer: Single entry and double entry.
◉ What are the stationary blades between each set of rotating
blades in an axial-flow turbine engine compressor called? Answer:
Stators.
◉ What is the function of the stators in a turbine engine
compressor? Answer: To receive the air from each stage of the
compressor and deliver it to the next stage at the proper velocity,
direction, and pressure.
◉ What is the standard sea level pressure? Answer: 29.92" Hg.
◉ What is the standard sea-level atmospheric pressure in millibars?
Answer: 1013.2 millibars.
◉ What is the standard sea level temperature for computing the
power of a gas turbine engine? Answer: 59°F.
, ◉ What type of failures would you expect when aircraft turbine
blades are subjected to excessive heat stress? Answer: Stress
rupture.
◉ What is the purpose of the stator vanes at the discharge end of an
axial-flow compressor? Answer: To straighten the airflow and
eliminate turbulence.
◉ Why is compressor field cleaning performed on turbine engines?
Answer: To prevent engine performance degradation, increased fuel
costs, and damage or corrosion to gas path surfaces.
◉ When are hot section inspections for modern turbine engines
required? Answer: On a time or cycle basis.
◉ What is the purpose of the shrouds on the turbine blades of an
axial-flow engine? Answer: To reduce vibration.
◉ What does the first stage turbine drive in a dual axial-flow
compressor? Answer: N(2) compressor.
◉ What should be done initially if a turbine engine catches fire when
starting? Answer: Turn off the fuel and continue engine rotation
with the starter.
