Power plant written PSI practice Exam
Questions and Answers
What is likely to occur if a reciprocating engine is operated at high
power settings before it is properly warmed up? -
correct answer ✅Oil starvation of bearings and other parts.
If the ignition switch is moved from BOTH to either LEFT or RIGHT
during an engine ground check, normal operation is usually
indicated by a slight -
correct answer ✅drop in torquemeter pressure indication.
The five events of a four-stroke cycle engine in the order of their
occurrence are -
correct answer ✅intake, compression, ignition, power, and
exhaust.
During the inspection of an engine control system in which push
pull control rods are used, the threaded rod ends should -
correct answer ✅be checked for the amount of thread
engagement by means of the inspection holes.
Which type of bearings are generally used for connecting rods and
cam shafts? -
correct answer ✅Plain.
,Power plant written PSI practice Exam
Questions and Answers
Some cylinder barrels are hardened by -
correct answer ✅nitriding.
What is the purpose of installing two or more springs on each valve
in an aircraft engine? -
correct answer ✅To eliminate valve spring vibration or surging.
The volume of a cylinder equals 70 cubic inches when the piston is
at bottom center. When the piston is at the top of the cylinder, the
volume equals 10 cubic inches. What is the compression ratio? -
correct answer ✅7:1
Three types of turbine blades are -
correct answer ✅impulse, reaction, and impulse-reaction.
Turbine blades are generally more susceptible to operating damage
than compressor blades because of -
correct answer ✅exposure to high temperatures.
, Power plant written PSI practice Exam
Questions and Answers
The non-rotating axial-flow compressor airfoils in an aircraft gas
turbine engine are called -
correct answer ✅stator vanes.
When starting a turbine engine, a hung start is indicated if the
engine -
correct answer ✅fails to reach idle rpm.
A turbine engine hot section is particularly susceptible to which
kind of damage? -
correct answer ✅Cracking.
Who establishes the recommended operating time between
overhauls (TBO) of a turbine engine used in general aviation? -
correct answer ✅Engine manufacturer.
Which of the following may be used to mark turbine engine
components exposed to high temperatures? -
correct answer ✅Layout dye.
Questions and Answers
What is likely to occur if a reciprocating engine is operated at high
power settings before it is properly warmed up? -
correct answer ✅Oil starvation of bearings and other parts.
If the ignition switch is moved from BOTH to either LEFT or RIGHT
during an engine ground check, normal operation is usually
indicated by a slight -
correct answer ✅drop in torquemeter pressure indication.
The five events of a four-stroke cycle engine in the order of their
occurrence are -
correct answer ✅intake, compression, ignition, power, and
exhaust.
During the inspection of an engine control system in which push
pull control rods are used, the threaded rod ends should -
correct answer ✅be checked for the amount of thread
engagement by means of the inspection holes.
Which type of bearings are generally used for connecting rods and
cam shafts? -
correct answer ✅Plain.
,Power plant written PSI practice Exam
Questions and Answers
Some cylinder barrels are hardened by -
correct answer ✅nitriding.
What is the purpose of installing two or more springs on each valve
in an aircraft engine? -
correct answer ✅To eliminate valve spring vibration or surging.
The volume of a cylinder equals 70 cubic inches when the piston is
at bottom center. When the piston is at the top of the cylinder, the
volume equals 10 cubic inches. What is the compression ratio? -
correct answer ✅7:1
Three types of turbine blades are -
correct answer ✅impulse, reaction, and impulse-reaction.
Turbine blades are generally more susceptible to operating damage
than compressor blades because of -
correct answer ✅exposure to high temperatures.
, Power plant written PSI practice Exam
Questions and Answers
The non-rotating axial-flow compressor airfoils in an aircraft gas
turbine engine are called -
correct answer ✅stator vanes.
When starting a turbine engine, a hung start is indicated if the
engine -
correct answer ✅fails to reach idle rpm.
A turbine engine hot section is particularly susceptible to which
kind of damage? -
correct answer ✅Cracking.
Who establishes the recommended operating time between
overhauls (TBO) of a turbine engine used in general aviation? -
correct answer ✅Engine manufacturer.
Which of the following may be used to mark turbine engine
components exposed to high temperatures? -
correct answer ✅Layout dye.
