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AMS 274 Turbines Final Exam, Most Recent Exam
2026 Actual Complete Real Verified Exam Questions
And Correct Answers (Verified Answers)|| Accurate
Answers || Already Graded A+ | Newest Exam!!!
State three functions of the oil tanks overboard relief
valve: - Answer-1. Maintains positive pressure
2. Vents to prevent tank failure
3. Allows depressurization of tank at shutdown
What is the function of the oil tanks dwell chamber? -
Answer-Separates air from the oil (bleeds it out from the
scavenge system)
What is the position of the internal valves of the
pressurizing and vent valves when the aircraft is on the
ground? - Answer-Aneroid valve is open
What is the position of the internal valves of the
pressurizing and vent valves when the aircraft is at 20k ft?
- Answer-Aneroid begins to open at around 8000-10000 ft,
and will be completely closed at 20000 ft
,2|Page
What is a "hot tank"? - Answer-The cooler is located in the
pressure subsystem
What is a "cold tank"? - Answer-The cooler is located in
the scavenge system
Explain trimming: - Answer-Also known as tuning, is when
you make adjustments to the fuel control system for idle
and max power (there are 2 adjustments)
Explain the thermostatic valve position and flow of fuel and
oil when the oil is cold in a fuel/oil cooler: - Answer-The
thermostatic valve is open and ONLY fuel is flowing
Explain the thermostatic valve position and flow of fuel and
oil when the oil is hot in a fuel/oil cooler: - Answer-The
thermostatic valve is closed and forces oil through the
cooler with the fuel (the two mix and oil heats the fuel)
Oil jets: - Answer-Fixed nozzles that apply constant flow to
all the bearings (fixed nozzles used for this reason)
, 3|Page
Chip detector: - Answer-Checks for the presence of
ferrous material due to internal breakdown
What happens when ferrous pieces get into a chip
detector? - Answer-When chips get in they attach to the
magnet and complete the circuit to the electrode and
cause a chip light to illuminate in the cockpit
Gas turbine engines require what kind of oil? - Answer-
Synthetic oil (cannot be interchanged with reciprocating
engine oil)
When should the oil in turbines be serviced and why? -
Answer-Just after shutdown when the oil is still warm so
you don't over-service the system
What else can you use to cool oil aside from fuel? -
Answer-RAM air
Delta P does what? - Answer-Has a light that denotes an
impending filter bypass. This allows oil to bypass the filter
in case of a clogging/oil is too cold
AMS 274 Turbines Final Exam, Most Recent Exam
2026 Actual Complete Real Verified Exam Questions
And Correct Answers (Verified Answers)|| Accurate
Answers || Already Graded A+ | Newest Exam!!!
State three functions of the oil tanks overboard relief
valve: - Answer-1. Maintains positive pressure
2. Vents to prevent tank failure
3. Allows depressurization of tank at shutdown
What is the function of the oil tanks dwell chamber? -
Answer-Separates air from the oil (bleeds it out from the
scavenge system)
What is the position of the internal valves of the
pressurizing and vent valves when the aircraft is on the
ground? - Answer-Aneroid valve is open
What is the position of the internal valves of the
pressurizing and vent valves when the aircraft is at 20k ft?
- Answer-Aneroid begins to open at around 8000-10000 ft,
and will be completely closed at 20000 ft
,2|Page
What is a "hot tank"? - Answer-The cooler is located in the
pressure subsystem
What is a "cold tank"? - Answer-The cooler is located in
the scavenge system
Explain trimming: - Answer-Also known as tuning, is when
you make adjustments to the fuel control system for idle
and max power (there are 2 adjustments)
Explain the thermostatic valve position and flow of fuel and
oil when the oil is cold in a fuel/oil cooler: - Answer-The
thermostatic valve is open and ONLY fuel is flowing
Explain the thermostatic valve position and flow of fuel and
oil when the oil is hot in a fuel/oil cooler: - Answer-The
thermostatic valve is closed and forces oil through the
cooler with the fuel (the two mix and oil heats the fuel)
Oil jets: - Answer-Fixed nozzles that apply constant flow to
all the bearings (fixed nozzles used for this reason)
, 3|Page
Chip detector: - Answer-Checks for the presence of
ferrous material due to internal breakdown
What happens when ferrous pieces get into a chip
detector? - Answer-When chips get in they attach to the
magnet and complete the circuit to the electrode and
cause a chip light to illuminate in the cockpit
Gas turbine engines require what kind of oil? - Answer-
Synthetic oil (cannot be interchanged with reciprocating
engine oil)
When should the oil in turbines be serviced and why? -
Answer-Just after shutdown when the oil is still warm so
you don't over-service the system
What else can you use to cool oil aside from fuel? -
Answer-RAM air
Delta P does what? - Answer-Has a light that denotes an
impending filter bypass. This allows oil to bypass the filter
in case of a clogging/oil is too cold
