ASA Chapter 4 – Engine Performance Study Guide, Review Notes &
Practice Questions
Where is the critical altitude of a supercharged reciprocating engine? - ANS ✔✔The highest
altitude at which a desired manifold pressure can be obtained
What is controlled by the wastegate of a turbo-charged-reciprocating engine? - ANS ✔✔Exhaust
gas discharge
Under normal operating conditions, which combination of MAP and RPM produce the most
sever wear, fatigue, and damage to high performance reciprocating engines? - ANS ✔✔High
RPM and low MAP
Which place in the turbojet engine is subjected to the highest temperature? - ANS ✔✔Turbine
inlet
The most important restriction to the operation of turbojet or turboprop engines is - ANS
✔✔Limiting exhaust gas temperature
What characterizes a transient compressor stall? - ANS ✔✔Intermittent "bang" as backfires and
flow reversals take place
What prevents turbine engines from developing compressor stalls? - ANS ✔✔Compressor bleed
valves
What indicates that a compressor stall has developed and become steady? - ANS ✔✔Strong
vibrations and a loud roar
Practice Questions
Where is the critical altitude of a supercharged reciprocating engine? - ANS ✔✔The highest
altitude at which a desired manifold pressure can be obtained
What is controlled by the wastegate of a turbo-charged-reciprocating engine? - ANS ✔✔Exhaust
gas discharge
Under normal operating conditions, which combination of MAP and RPM produce the most
sever wear, fatigue, and damage to high performance reciprocating engines? - ANS ✔✔High
RPM and low MAP
Which place in the turbojet engine is subjected to the highest temperature? - ANS ✔✔Turbine
inlet
The most important restriction to the operation of turbojet or turboprop engines is - ANS
✔✔Limiting exhaust gas temperature
What characterizes a transient compressor stall? - ANS ✔✔Intermittent "bang" as backfires and
flow reversals take place
What prevents turbine engines from developing compressor stalls? - ANS ✔✔Compressor bleed
valves
What indicates that a compressor stall has developed and become steady? - ANS ✔✔Strong
vibrations and a loud roar
