M15 Gas Turbine Engine Sub-Module No 15 Power Augmentation (Quiz :1)

Power Augmentation

Quiz

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1. As the atmospheric pressure decreases with altitude, and/or the ambient air temperature increases ?
   1.   There is, a reduction in thrust
   2.   There is, a increase in thrust
   3.   There is, a increase in shaft horsepower
2. The injection of coolant into the combustion chamber inlet is usually more suitable for ?
   1.   Centrifugal flow compressor engines
   2.   Axial flow compressor engines
   3.   Reciprocating Engine
3. Water injection systems are not normally used on ?
   1.   Turbojet engines
   2.   Low bypass turbofan engines
   3.   High bypass turbofan engines
4. While water is flowing In Augmentation Sytem Resulting RPM is usually----- ?
   1.   Lower
   2.   Higher
   3.   Constant
5. Afterburning provides the best method of thrust augmentation for ?
   1.   Short periods
   2.   Long periods
   3.   During landing
6. The area of the afterburning jet pipe is larger than a normal jet pipe would be for the same engine to obtain a ?
   1.   Reduced velocity gas stream
   2.   Increased velocity gas stream
   3.   Reduced pressure gas stream
7. The temperature of the afterburner flame can be in excess of ?
   1.   1500 deg c
   2.   1600 deg c
   3.   1700 deg c
8. The thrust of an afterburning engine, without afterburning in operation, is _______ than that of a similar engine not fitted with afterburning equipment ?
   1.   Slightly more
   2.   Slightly less
   3.   Considerably more
9. The afterburning jet pipe is made from a heat resistant ?
   1.   Copper alloy
   2.   Titanium alloy
   3.   Nickel alloy
10. Fuel is sprayed in to the flame area between the flame stabilizers from holes in the?
    1.   Downstream edge of the manifolds
    2.   Upstream edge of the manifolds
    3.   Midtream edge of the manifolds