B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Aeronautical Sciences
GAS TURBINE ENGINE
(Upto 2015 batch)
Time 3 Hours Maximum 75 Marks
Part A x 3 15)
Answer any five questions.
1. Describe propulsive efficiency.
2. Describe bypass ratio.
3. Write short notes on 'Magnetic Chip Detector'.
4. Define Potential energy and kinetic energy.
5. What is the purpose of the dump valve in fuel system?
6. Define compressor stall.
7. Describe specific fuel consumption.
8. What is the purpose of scavenge oil pump.
Part B x 12 60)
Answer all questions.
9. Explain in detail the principles of Jet propulsion.
Or
Describe briefly the events of the Braytons cycle
with volume-pressure and Temperature pressure
diagram.
Sub. Code
42
CP-7862
2
Ws2
10. What are the various types of compressor are used
in Gas turbine Engine? Explain its operation with
advantages and disadvantages.
Or
What are the various types of combustion chambers
used in Gas turbine Engine? Explain them by neat
sketches with advantages and disadvantages of
each.
11. Briefly explain the various types of forces acting on
a propeller.
Or
Explain the operation of a Turboprop engine.
12. Explain Full Authority Digital Electronic Control
(FADEC) System.
Or
Describe various types of jet fuel and explain the
characteristics in detail.
13. Explain the working principle of Air turbine starter.
Or
Describe main components of ignition system of a
Gas turbine engine.
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