Powerplant AUX unit 3 ASA Exam Questions
and Answers
The primary purpose of baffles and deflectors installed around
cylinders of air-cooled aircraft engines is to
A— create a low pressure area aft of the cylinders.
B— force cooling air into close contact with all parts of the
cylinders. C— increase the volume of air used to cool the engine. -
correct answer ✅B
What is the purpose of an augmenter used in some reciprocating
engine exhaust systems?
A— To reduce exhaust back pressure. B— To aid in cooling the
engine.
C— To assist in displacing the exhaust gases. -
correct answer ✅B
Aircraft reciprocating engine cylinder baffles and deflectors should
be repaired as required to prevent loss of A— power.
B— fin area.
C— cooling. -
correct answer ✅C
Cracks in cooling fins that do not extend into the cylinder head
, Powerplant AUX unit 3 ASA Exam Questions
and Answers
A— should be left alone and monitored.
B— may be repaired by removing the affected area and contour
filing within limits.
C— may be repaired by adding a stiffener. -
correct answer ✅B
Which of the following should a mechanic consult to determine the
maximum amount of cylinder cooling fin that could be removed
when cracks are found?
A— AC 43.13-1A.
B— Engine manufacturer's service or overhaul manual.
C— Engine structure repair manual. -
correct answer ✅B
A bent cooling fin on an aluminum cylinder head should be
A— sawed off and filed smooth.
B— left alone if no crack has formed. C— straightened out as much
as possible without breaking. -
correct answer ✅B
Where are cooling fins usually located on aircooled engines?
and Answers
The primary purpose of baffles and deflectors installed around
cylinders of air-cooled aircraft engines is to
A— create a low pressure area aft of the cylinders.
B— force cooling air into close contact with all parts of the
cylinders. C— increase the volume of air used to cool the engine. -
correct answer ✅B
What is the purpose of an augmenter used in some reciprocating
engine exhaust systems?
A— To reduce exhaust back pressure. B— To aid in cooling the
engine.
C— To assist in displacing the exhaust gases. -
correct answer ✅B
Aircraft reciprocating engine cylinder baffles and deflectors should
be repaired as required to prevent loss of A— power.
B— fin area.
C— cooling. -
correct answer ✅C
Cracks in cooling fins that do not extend into the cylinder head
, Powerplant AUX unit 3 ASA Exam Questions
and Answers
A— should be left alone and monitored.
B— may be repaired by removing the affected area and contour
filing within limits.
C— may be repaired by adding a stiffener. -
correct answer ✅B
Which of the following should a mechanic consult to determine the
maximum amount of cylinder cooling fin that could be removed
when cracks are found?
A— AC 43.13-1A.
B— Engine manufacturer's service or overhaul manual.
C— Engine structure repair manual. -
correct answer ✅B
A bent cooling fin on an aluminum cylinder head should be
A— sawed off and filed smooth.
B— left alone if no crack has formed. C— straightened out as much
as possible without breaking. -
correct answer ✅B
Where are cooling fins usually located on aircooled engines?
