AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
Description
This exam covers the fundamental principles of aircraft propulsion and economic
aspects of design and operation. It focuses on engine types, performance
parameters, thrust calculations, efficiency, fuel consumption, and the cost analysis
methods used in evaluating aircraft and engine systems. It is ideal for Aeronautical
Engineering or Aviation Management students preparing for assessments and
interviews.
QUESTIONS
The main function of an aircraft propulsion system is to
A. Produce lift
B. Produce thrust to overcome drag
C. Control stability
D. Support landing gear
Answer: B
The jet engine operates on the principle of
A. Bernoulli’s theorem
B. Newton’s third law of motion
,AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
C. Boyle’s law
D. Pascal’s principle
Answer: B
The four basic strokes in a piston engine are
A. Intake, compression, combustion, exhaust
B. Intake, thrust, lift, drag
C. Push, pull, rotate, eject
D. Pressure, vacuum, expansion, release
Answer: A
The main components of a turbojet engine are
A. Compressor, combustion chamber, turbine, nozzle
B. Fan, propeller, piston, cylinder
C. Fuel tank, propeller, gear, valve
D. Inlet, carburetor, crankshaft, muffler
Answer: A
The thrust produced by a jet engine depends on
A. Air density
,AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
B. Velocity difference between inlet and exhaust
C. Fuel type
D. All of the above
Answer: D
Specific fuel consumption (SFC) measures
A. Thrust per unit mass flow
B. Fuel flow rate per unit thrust
C. Power per unit fuel
D. Efficiency
Answer: B
The efficiency of a turbofan engine is generally
A. Lower than turbojet
B. Higher than turbojet
C. Same as turbojet
D. Zero
Answer: B
, AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
The function of the compressor in a gas turbine engine is to
A. Mix air and fuel
B. Increase air pressure before combustion
C. Reduce exhaust velocity
D. Produce thrust
Answer: B
The purpose of the turbine is to
A. Compress air
B. Extract energy from hot gases
C. Burn fuel
D. Control thrust
Answer: B
The bypass ratio in turbofan engines refers to
A. Ratio of air bypassed to that passing through core
B. Ratio of exhaust to intake
C. Ratio of temperature to pressure
EXAM
Description
This exam covers the fundamental principles of aircraft propulsion and economic
aspects of design and operation. It focuses on engine types, performance
parameters, thrust calculations, efficiency, fuel consumption, and the cost analysis
methods used in evaluating aircraft and engine systems. It is ideal for Aeronautical
Engineering or Aviation Management students preparing for assessments and
interviews.
QUESTIONS
The main function of an aircraft propulsion system is to
A. Produce lift
B. Produce thrust to overcome drag
C. Control stability
D. Support landing gear
Answer: B
The jet engine operates on the principle of
A. Bernoulli’s theorem
B. Newton’s third law of motion
,AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
C. Boyle’s law
D. Pascal’s principle
Answer: B
The four basic strokes in a piston engine are
A. Intake, compression, combustion, exhaust
B. Intake, thrust, lift, drag
C. Push, pull, rotate, eject
D. Pressure, vacuum, expansion, release
Answer: A
The main components of a turbojet engine are
A. Compressor, combustion chamber, turbine, nozzle
B. Fan, propeller, piston, cylinder
C. Fuel tank, propeller, gear, valve
D. Inlet, carburetor, crankshaft, muffler
Answer: A
The thrust produced by a jet engine depends on
A. Air density
,AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
B. Velocity difference between inlet and exhaust
C. Fuel type
D. All of the above
Answer: D
Specific fuel consumption (SFC) measures
A. Thrust per unit mass flow
B. Fuel flow rate per unit thrust
C. Power per unit fuel
D. Efficiency
Answer: B
The efficiency of a turbofan engine is generally
A. Lower than turbojet
B. Higher than turbojet
C. Same as turbojet
D. Zero
Answer: B
, AIRCRAFT PROPULSION AND COST ANALYSIS
EXAM
The function of the compressor in a gas turbine engine is to
A. Mix air and fuel
B. Increase air pressure before combustion
C. Reduce exhaust velocity
D. Produce thrust
Answer: B
The purpose of the turbine is to
A. Compress air
B. Extract energy from hot gases
C. Burn fuel
D. Control thrust
Answer: B
The bypass ratio in turbofan engines refers to
A. Ratio of air bypassed to that passing through core
B. Ratio of exhaust to intake
C. Ratio of temperature to pressure
