O's and P's ASA powerplant test guide
turbine engines Exam Questions and
Answers
what are two basic sections of a turbine engine? -
correct answer ✅the hot section and the cold section
what are the two basic types of compressors that are used in
aircraft turbine engines? -
correct answer ✅Axial flow and centrifugal
what is the purpose of the stators in an axial flow compressor? -
correct answer ✅the stators convert velocity energy into pressure
energy and change the direction of the air so it is proper for the
next stage of rotors.
what three types of combustors used on aircraft turbine engines? -
correct answer ✅can-type, annular type, and can-annular
how many igniters are there normally in an aircraft turbine engine?
-
correct answer ✅two
what is the main purpose of the turbine nozzle in an aircraft turbine
engine? -
, O's and P's ASA powerplant test guide
turbine engines Exam Questions and
Answers
correct answer ✅the turbine nozzle directs the hot gasses as they
leave the combustor so they will turn the turbine wheel with
maximum efficiency.
what is meant by a free-turbine shaft engine? -
correct answer ✅a turboshaft engine that has a turbine wheel, or
stage of turbine wheels, that is not used to drive the compressor of
the gas generator section of the engine. this free turbine drives the
propeller on a turbo propeller engine or the transmission rotor in a
helicopter.
why do some axial flow turbine engines have more than one set of
turbines and compressors? -
correct answer ✅a two-spool turbine engine has a low pressure
and a high pressure compressor, each driven by it own turbine. the
two independent systems operate at the speed at which they are
most efficient.
what kind of bearings are used to support the rotor shaft of an
aircraft turbine engine? -
correct answer ✅anti-friction bearings, such as ball bearings or
roller bearings
turbine engines Exam Questions and
Answers
what are two basic sections of a turbine engine? -
correct answer ✅the hot section and the cold section
what are the two basic types of compressors that are used in
aircraft turbine engines? -
correct answer ✅Axial flow and centrifugal
what is the purpose of the stators in an axial flow compressor? -
correct answer ✅the stators convert velocity energy into pressure
energy and change the direction of the air so it is proper for the
next stage of rotors.
what three types of combustors used on aircraft turbine engines? -
correct answer ✅can-type, annular type, and can-annular
how many igniters are there normally in an aircraft turbine engine?
-
correct answer ✅two
what is the main purpose of the turbine nozzle in an aircraft turbine
engine? -
, O's and P's ASA powerplant test guide
turbine engines Exam Questions and
Answers
correct answer ✅the turbine nozzle directs the hot gasses as they
leave the combustor so they will turn the turbine wheel with
maximum efficiency.
what is meant by a free-turbine shaft engine? -
correct answer ✅a turboshaft engine that has a turbine wheel, or
stage of turbine wheels, that is not used to drive the compressor of
the gas generator section of the engine. this free turbine drives the
propeller on a turbo propeller engine or the transmission rotor in a
helicopter.
why do some axial flow turbine engines have more than one set of
turbines and compressors? -
correct answer ✅a two-spool turbine engine has a low pressure
and a high pressure compressor, each driven by it own turbine. the
two independent systems operate at the speed at which they are
most efficient.
what kind of bearings are used to support the rotor shaft of an
aircraft turbine engine? -
correct answer ✅anti-friction bearings, such as ball bearings or
roller bearings
