M15 Gas Turbine Engine Sub-Module No 2 (Quiz : No 1)

15.2 Engine Performance

Quiz

 

1. Choked nozzle means the highest efficiency has been obtained in the engine for ?
   1.   Subsonic flight
   2.   Supersonic flight
   3.   Transonic flight
2. The bypass ratio of 4:1, indicates ?
   1.   4 for core, 4 for bypass
   2.   4 for core, 1 for bypass
   3.   4 for bypass, 1 for core
3. One horse power is equal to ?
   1.   375 meter/h
   2.   375 mile/h
   3.   375 km/h
4. The free turbine is located ________ of the engine turbine ?
   1.   Upstream
   2.   Downstream
   3.   In front
5. Gross thrust - ram drag = ?
   1.   Net thrust
   2.   Total drag
   3.   Induced drag
6. The basic parameter for describing the fuel economy of aircraft engines is usually ?
   1.   Thrust
   2.   Weight
   3.   Specific fuel consumption
7. The turbofan generates thrust by giving a relatively _____ acceleration to a large quantity of air ?
   1.   Greater
   2.   Slower
   3.   Faster
8. As the altitude increases the density _______ ?
   1.   Remains constant
   2.   Increases
   3.   Decreases
9. Humidity effects mostly the power of ------ ?
   1.   Jet engine
   2.   Reciprocating engine
   3.   Turbo fan engine
10. Thrust horse power = ?
    1.   Net thrust x aircraft velocity / 375
    2.   Net thrust - aircraft velocity
    3.   Net thrust - aircraft velocity / 375