1|Page : 2024 | Grade A+
Lubrication Systems Questions and
Correct Answers Latest Update,
Graded A+
Which of these characteristics is desirable in turbine engine oil?
A- Low flash point
B- High flash point
C- High volatility
o :## B
The type of oil pumps most commonly used on turbine engines are classified as
o :## positive displacement
What is the source of most of the heat that is absorbed by the lubricating oil in a
reciprocating engine?
o :## pistons and cylinder walls
What will happen to the return oil if the oil line between the scavenger pump and
the oil cooler separates?
o :## the return oil will be pumped overboard
The vent line connecting the oil supply tank and the engine in some dry sump
engine installations permits...
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
,2|Page : 2024 | Grade A+
o :## the oil tank to be vented through the normal engine vent
What determines the minimum particle size which will be excluded or filtered by a
cuno-type (stacked disc, edge filtration) filter?
o :## the spacer thickness
The main oil filters strain the oil at which point in the system?
o :## just as it leaves the pressure pump
The basic oil pressure relief valve setting for a newly overhauled engine is made...
o :## in the overhaul shop
The oil used in reciprocating engines has a relatively high viscosity due to...
o :## large clearances and high operating temperatures
Manufacturers normally require turbine engine oil servicing within a short time
after engine shutdown primarily to...
o :## prevent over-servicing
A drop in oil pressure may be caused by...
o :## foreign material under the relief valve
Excessive oil is prevented from accumulating on the cylinder walls of a
reciprocating engine by...
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
, 3|Page : 2024 | Grade A+
o :## oil control rings on the pistons
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
o :## 1, 2, 3, 4, 5
The primary source of oil contamination in a normally operating reciprocating
engine is...
o :## combustion deposits due to combustion chamber blow-by and oil
migration on the cylinder walls
Where are sludge chambers, when used in aircraft engine lubricating systems,
usually located?
o :## in the crankshaft throws
Possible failure related ferrous-metal particles in turbine engine oil cause an
(electrical) indicating-type magnetic chip detector to indicate their presence by...
o :## bridging the gap between the detector center electrode and the ground
electrode
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
Lubrication Systems Questions and
Correct Answers Latest Update,
Graded A+
Which of these characteristics is desirable in turbine engine oil?
A- Low flash point
B- High flash point
C- High volatility
o :## B
The type of oil pumps most commonly used on turbine engines are classified as
o :## positive displacement
What is the source of most of the heat that is absorbed by the lubricating oil in a
reciprocating engine?
o :## pistons and cylinder walls
What will happen to the return oil if the oil line between the scavenger pump and
the oil cooler separates?
o :## the return oil will be pumped overboard
The vent line connecting the oil supply tank and the engine in some dry sump
engine installations permits...
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
,2|Page : 2024 | Grade A+
o :## the oil tank to be vented through the normal engine vent
What determines the minimum particle size which will be excluded or filtered by a
cuno-type (stacked disc, edge filtration) filter?
o :## the spacer thickness
The main oil filters strain the oil at which point in the system?
o :## just as it leaves the pressure pump
The basic oil pressure relief valve setting for a newly overhauled engine is made...
o :## in the overhaul shop
The oil used in reciprocating engines has a relatively high viscosity due to...
o :## large clearances and high operating temperatures
Manufacturers normally require turbine engine oil servicing within a short time
after engine shutdown primarily to...
o :## prevent over-servicing
A drop in oil pressure may be caused by...
o :## foreign material under the relief valve
Excessive oil is prevented from accumulating on the cylinder walls of a
reciprocating engine by...
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
, 3|Page : 2024 | Grade A+
o :## oil control rings on the pistons
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
o :## 1, 2, 3, 4, 5
The primary source of oil contamination in a normally operating reciprocating
engine is...
o :## combustion deposits due to combustion chamber blow-by and oil
migration on the cylinder walls
Where are sludge chambers, when used in aircraft engine lubricating systems,
usually located?
o :## in the crankshaft throws
Possible failure related ferrous-metal particles in turbine engine oil cause an
(electrical) indicating-type magnetic chip detector to indicate their presence by...
o :## bridging the gap between the detector center electrode and the ground
electrode
Master01: DO NOT COPY AND PASTE!! August 22, 2024 Latest Update
