AMS 274 TURBINES FINAL ACTUAL
EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◍ Oil Pumps.
Answer: -Vane, Gerotor, and Gear-All are positive displacement pumps
◍ Types of Fuel Pumps.
Answer: -Self-lubricating, spur-gear types with a single or dual element
◍ Elements for Oil System.
Answer: -One pressure element and multiple scavenge elements
◍ Who patented the first turbine engine(to function on a test stand)?.
Answer: Frank Whittle
◍ Oil Tank Deaerator.
Answer: -Separates air from the oil, also called the dwell chamber
◍ Methods of cooling oil.
Answer: -Air to Oil-Fuel to Oil
◍ 3 Subsystems.
Answer: -Pressure, Vent (Breather), Scavenge
◍ What did Frank Whittle also patent?.
Answer: Turbofan
◍ Pressurizing Vent Valve Bellows.
Answer: -Aneroid bellows with sea level pressure trapped inside.-Bellows is
open at sea level, closes as altitude increases-Assures oil nozzle flow is
similar to that of sea level flow
◍ What was Whittle's most challenging obstacle designing the turbine engine?.
, Answer: The combustor
◍ What was General Electric's part in turbine engine history?.
Answer: First USA turbine manufacturer in the "Jet Race"
◍ 4 types of jet engines.
Answer: - Rocket- Ramjet- Pulsejet- Turbojet
◍ What type of jet engine carries it's own oxygen supply?.
Answer: Rocket
◍ What are the 4 types of turbojets?.
Answer: - Turbojet- Turbofan- Turboprop- Turboshaft
◍ 2 types of thrust producing engines.
Answer: - Turbojet- Turbofan
◍ Last Chance Oil Filters.
Answer: -Prevent plugging of oil jets-Located before the nozzle-Cleaned
during the overhaul process
◍ 2 types of torque producing engines.
Answer: - Turboprop- Turboshaft
◍ Oil Jets.
Answer: -Fixed nozzles that apply constant flow to all the bearings
◍ Hot Tank/Cold Tank.
Answer: -Hot Tank: Oil Cooler is in the Pressure subsystem.-Cold Tank: Oil
Cooler is in the Scavenge subsystem
◍ Thermostatic valve in oil cooler.
Answer: Regulates the flow of oil
◍ Oil Present in the Gas Path.
Answer: Pressurized air in the bearing cavities is a result of gas path air
leaking across the seals
◍ Inlet Guide Vane (IGV).
Answer: Stationary airfoils that direct air into the compressor blades at the
EXAM PAPER 2026 QUESTIONS WITH
ANSWERS GRADED A+
◍ Oil Pumps.
Answer: -Vane, Gerotor, and Gear-All are positive displacement pumps
◍ Types of Fuel Pumps.
Answer: -Self-lubricating, spur-gear types with a single or dual element
◍ Elements for Oil System.
Answer: -One pressure element and multiple scavenge elements
◍ Who patented the first turbine engine(to function on a test stand)?.
Answer: Frank Whittle
◍ Oil Tank Deaerator.
Answer: -Separates air from the oil, also called the dwell chamber
◍ Methods of cooling oil.
Answer: -Air to Oil-Fuel to Oil
◍ 3 Subsystems.
Answer: -Pressure, Vent (Breather), Scavenge
◍ What did Frank Whittle also patent?.
Answer: Turbofan
◍ Pressurizing Vent Valve Bellows.
Answer: -Aneroid bellows with sea level pressure trapped inside.-Bellows is
open at sea level, closes as altitude increases-Assures oil nozzle flow is
similar to that of sea level flow
◍ What was Whittle's most challenging obstacle designing the turbine engine?.
, Answer: The combustor
◍ What was General Electric's part in turbine engine history?.
Answer: First USA turbine manufacturer in the "Jet Race"
◍ 4 types of jet engines.
Answer: - Rocket- Ramjet- Pulsejet- Turbojet
◍ What type of jet engine carries it's own oxygen supply?.
Answer: Rocket
◍ What are the 4 types of turbojets?.
Answer: - Turbojet- Turbofan- Turboprop- Turboshaft
◍ 2 types of thrust producing engines.
Answer: - Turbojet- Turbofan
◍ Last Chance Oil Filters.
Answer: -Prevent plugging of oil jets-Located before the nozzle-Cleaned
during the overhaul process
◍ 2 types of torque producing engines.
Answer: - Turboprop- Turboshaft
◍ Oil Jets.
Answer: -Fixed nozzles that apply constant flow to all the bearings
◍ Hot Tank/Cold Tank.
Answer: -Hot Tank: Oil Cooler is in the Pressure subsystem.-Cold Tank: Oil
Cooler is in the Scavenge subsystem
◍ Thermostatic valve in oil cooler.
Answer: Regulates the flow of oil
◍ Oil Present in the Gas Path.
Answer: Pressurized air in the bearing cavities is a result of gas path air
leaking across the seals
◍ Inlet Guide Vane (IGV).
Answer: Stationary airfoils that direct air into the compressor blades at the
