AMP 221 TURBINE THEORY FINAL EXAM STUDY
GUIDE
When an engine with a subsonic divergent type inlet duct is running in place at
high speed on the ground, the air pressure within the inlet is
Positive
What will result if an oil filter becomes completely blocked?
Oil will flow at the normal rate through the system.
Why are turbine engine igniters less susceptible to fouling than reciprocating
engine spark plugs?
The high-intensity spark cleans the igniter.
For what primary purpose is a turbine engine fuel control unit trimmed?
To obtain maximum thrust output when desired.
After a fire is extinguished, or overheat condition removed in aircraft equipped
with a Systron-Donner fire detector, the detection system
Automatically resets
Great caution should be exercised in handling damaged hermetically sealed
turbine engine igniter transformer units because
Some contain radioactive material
The purpose of cascade vanes in a thrust reversing system is to
Turn to a forward direction the fan and/or hot exhaust gases that have been blocked
from exiting through the exhaust nozzle.
A fire detection system operates on the principle of a buildup of gas pressure
within a tube proportional to temperature. Which of the following systems does
this statement define?
Lindberg continuous-element system.
In a jet engine which uses a fuel-oil heat exchanger, the oil temperature is
controlled by a thermostatic valve that regulates the flow of
oil through the heat exchanger.
What retains the nitrogen charge and fire-extinguishing agent in a high rate of
discharge (HRD) container?
Breakable disk and fusible disk.
What factor is not used in the operation of an aircraft gas turbine engine fuel
control unit?
Mixture control position.
A Bourdon-tube instrument may be used to indicate
1. Pressure, 2. Temperature
Which of the following types of combustion sections are used in aircraft turbine
engines?
Multiple-can, annular, and can-annular.
What indications may shift when a turbofan engine anti-icing (bleed air) system is
turned on?
1) Tachometer, 2) EGT, 3) EPR
, Which of the following types of electric motors are commonly used in electric
tachometers
Synchronous motors.
(Refer to Figure) Determine the fire-extinguisher container pressure limits when
the temperature is 75°F.
338 minimum and 424 maximum.
One function of the nozzle diaphragm in a turbine engine is to
Direct the flow of gases to strike the turbine blades at the desired angle.
What effect does high atmospheric humidity have on the operation of a jet
engine?
Has little or no effect.
The turbine section of a jet engine
drives the compressor section.
What is the primary purpose of the oil-to-fuel heat exchanger?
Cool the oil.
The engine pressure ratio (EPR) indicator is a direct indication of
engine thrust being produced.
What method(s) is/are used to provide clean air to the engines of helicopters and
turboprop airplanes that have particle (sand and ice) separators installed?
Sharp airflow directional change to take advantage of inertia and/or centrifugal force,
and filters or engine inlet screens.
Igniter plugs used in turbine engines are subjected to high intensity spark
discharges and yet they have a long service life because they
do not require continuous operation.
What turbine engine section provides for proper mixing of the fuel and air?
Combustion section
In addition to lubricating (reducing friction between moving parts), engine oil
performs what functions?
1. Cools.
2. Seals.
3. Cleans.
4. Prevents corrosion.
5. Cushions impact (shock) loads.
1,2,3,4,5
At what point in an axial-flow turbojet engine will the highest gas pressure occur?
At the compressor outlet.
What is the primary purpose of the tachometer on an axial-compressor turbine
engine?
Monitor engine RPM during starting and to indicate overspeed conditions.
Thrust reversers utilizing a pneumatic actuating system usually receive operating
pressure from
the engine bleed air system.
A continuous-loop fire detector is what type of detector?
Overheat detector.
A fire involving energized electrical equipment is defined as a
Class C fire
GUIDE
When an engine with a subsonic divergent type inlet duct is running in place at
high speed on the ground, the air pressure within the inlet is
Positive
What will result if an oil filter becomes completely blocked?
Oil will flow at the normal rate through the system.
Why are turbine engine igniters less susceptible to fouling than reciprocating
engine spark plugs?
The high-intensity spark cleans the igniter.
For what primary purpose is a turbine engine fuel control unit trimmed?
To obtain maximum thrust output when desired.
After a fire is extinguished, or overheat condition removed in aircraft equipped
with a Systron-Donner fire detector, the detection system
Automatically resets
Great caution should be exercised in handling damaged hermetically sealed
turbine engine igniter transformer units because
Some contain radioactive material
The purpose of cascade vanes in a thrust reversing system is to
Turn to a forward direction the fan and/or hot exhaust gases that have been blocked
from exiting through the exhaust nozzle.
A fire detection system operates on the principle of a buildup of gas pressure
within a tube proportional to temperature. Which of the following systems does
this statement define?
Lindberg continuous-element system.
In a jet engine which uses a fuel-oil heat exchanger, the oil temperature is
controlled by a thermostatic valve that regulates the flow of
oil through the heat exchanger.
What retains the nitrogen charge and fire-extinguishing agent in a high rate of
discharge (HRD) container?
Breakable disk and fusible disk.
What factor is not used in the operation of an aircraft gas turbine engine fuel
control unit?
Mixture control position.
A Bourdon-tube instrument may be used to indicate
1. Pressure, 2. Temperature
Which of the following types of combustion sections are used in aircraft turbine
engines?
Multiple-can, annular, and can-annular.
What indications may shift when a turbofan engine anti-icing (bleed air) system is
turned on?
1) Tachometer, 2) EGT, 3) EPR
, Which of the following types of electric motors are commonly used in electric
tachometers
Synchronous motors.
(Refer to Figure) Determine the fire-extinguisher container pressure limits when
the temperature is 75°F.
338 minimum and 424 maximum.
One function of the nozzle diaphragm in a turbine engine is to
Direct the flow of gases to strike the turbine blades at the desired angle.
What effect does high atmospheric humidity have on the operation of a jet
engine?
Has little or no effect.
The turbine section of a jet engine
drives the compressor section.
What is the primary purpose of the oil-to-fuel heat exchanger?
Cool the oil.
The engine pressure ratio (EPR) indicator is a direct indication of
engine thrust being produced.
What method(s) is/are used to provide clean air to the engines of helicopters and
turboprop airplanes that have particle (sand and ice) separators installed?
Sharp airflow directional change to take advantage of inertia and/or centrifugal force,
and filters or engine inlet screens.
Igniter plugs used in turbine engines are subjected to high intensity spark
discharges and yet they have a long service life because they
do not require continuous operation.
What turbine engine section provides for proper mixing of the fuel and air?
Combustion section
In addition to lubricating (reducing friction between moving parts), engine oil
performs what functions?
1. Cools.
2. Seals.
3. Cleans.
4. Prevents corrosion.
5. Cushions impact (shock) loads.
1,2,3,4,5
At what point in an axial-flow turbojet engine will the highest gas pressure occur?
At the compressor outlet.
What is the primary purpose of the tachometer on an axial-compressor turbine
engine?
Monitor engine RPM during starting and to indicate overspeed conditions.
Thrust reversers utilizing a pneumatic actuating system usually receive operating
pressure from
the engine bleed air system.
A continuous-loop fire detector is what type of detector?
Overheat detector.
A fire involving energized electrical equipment is defined as a
Class C fire
