M15 Gas Turbine Engine Sub-Module No 3 (Quiz 1)

 

15.3 Inlet

Quiz

 

1. The airflow through the engine must always stay _________?
   1.   Above mach 1
   2.   Mach 1
   3.   Below mach 1
2. The airinlet duct is considered an ?
   1.   Airframe part
   2.   Engine part
   3.   Fuselage
3. The amount of change in duct area and the magnitude of the shock are varied ?automatically with ?
   1.   Airspeed of the aircraft
   2.   Ambient temperature
   3.   speed of compressor
4. Icing effects ice buildup increases ______ and reduces__________?
   1.   Lift, drag
   2.   Drag, lift
   3.   Drag, thrust
5. Inlet ducts are designed to function as ?
   1.   Convergent duct
   2.   Divergent duct
   3.   Diffusers
6. Which devices are used to straighten the air flow, then they also have antiicing air flowing through ?
   1.   Nozzel guid vanes
   2.   Outlet guid vanes
   3.   Inlet guid vanes
7. What happen fule with Increased aerodynamic drag due to ice formation ?
   1.   Decreases fuel consumption
   2.   Increases fuel consumption
   3.   Fuel consumption remains constant
8. What type of intake is one that decreases gradually in area and then increases ?
   1.   Convergent
   2.   Divergent
   3.   Convergent / divergent
9. A uniform and steady airflow is necessary to avoid ?
   1.   Compressor stall
   2.   Excessive temp in the turbine section
   3.   Both
10. Supersonic inlets are used to slow the incoming engine air to __________ before it enters the engine ?
    1.   More than mach 1
    2.   Less than mach 1
    3.   Mach 1