NOTE
TO CHECK YOUR PREPARATION ,PLZ WRITE DOWN YOUR SELECTED OPTIONS (A,B,C) ON ROUGH PAGE AND AT THE END OF QUIZ , VERIFY YOUR SELECTED OPTIONS WITH THE CORRECT OPTIONS GIVEN BELOW
1. If an electrical de-icing system is operating, thrust will.
A. decrease.
B. remain constant.
C. increase.
2. A bellmouth compressor inlet is used on.
A. helicopters.
B. supersonic aircraft.
C. aircraft with low ground clearance.
3. Electrical de-icing operates.
A. continuously and intermittently.
B. cyclically independent of ambient air temperature.
C. cyclically dependent on ambient air temperature.
4. The inlet door on a variable geometry intake is open at.
A. idle speed.
B. supersonic speeds.
C. subsonic speeds.
5. Anti-ice is recommended during.
A. OAT +10°Centigrade and visible moisture.
B. thunderstorms.
C. OAT below 10°Centigrade .
6. A pitot intake is divergent from front to rear because it.
A. reduces ram compression.
B. produces the maximum amount of ram compression.
C. speeds up the air before it hits the compressor face.
7. Anti icing of jet engine air inlets is commonly accomplished by.
A. electrical heating elements located within the engine air inlet cowling.
B. electrical heating elements inside the inlet guide vanes.
C. engine bleed air ducted through the critical areas.
.
8. The term 'Ram Ratio' in regard to air intakes is the relationship between.
A. ambient pressure and ambient temperature.
B. ambient temperature and compressor inlet temperature.
C. ambient pressure and compressor inlet pressure.
.
9. An increase in the Ram Ratio of an intake will.
A. have no effect upon the temperature of the air.
B. increase the temperature of the air.
C. decrease the temperature of the air.
10. As an aircraft approaches the transonic range, the aerodynamic efficiency of a Pitot type intake.
A. increases due to the ram effect.
B. decreases due to the shock wave.
C. is not effected by forward speed.
.
ABOVE QUESTIONS WITH ANSWERS
1. If an electrical de-icing system is operating, thrust will.
A. decrease.
B. remain constant.
C. increase.
Ans : remain constant.
Explanation: Hot air anti icing will reduce thrust, not electrical.
2. A bellmouth compressor inlet is used on.
A. helicopters.
B. supersonic aircraft.
C. aircraft with low ground clearance.
Ans : helicopters.
Explanation: Jepperson Gas Turbine Powerplant Page 3-5 refers.
3. Electrical de-icing operates.
A. continuously and intermittently.
B. cyclically independent of ambient air temperature.
C. cyclically dependent on ambient air temperature.
Ans : continuously and intermittently.
Explanation: Rolls Royce The Jet Engine page 150 refers.
4. The inlet door on a variable geometry intake is open at.
A. idle speed.
B. supersonic speeds.
C. subsonic speeds.
Ans : subsonic speeds.
Explanation: Rolls Royce The Jet Engine fig 23.9 refers.
5. Anti-ice is recommended during.
A. OAT +10°Centigrade and visible moisture.
B. thunderstorms.
C. OAT below 10°Centigrade .
Ans : OAT +10°Centigrade and visible moisture.
Explanation: Jepperson Gas Turbine Powerplants Page 9-2 Refers.
6. A pitot intake is divergent from front to rear because it.
A. reduces ram compression.
B. produces the maximum amount of ram compression.
C. speeds up the air before it hits the compressor face.
Ans : produces the maximum amount of ram compression.
Explanation: NIL.
7. Anti icing of jet engine air inlets is commonly accomplished by.
A. electrical heating elements located within the engine air inlet cowling.
B. electrical heating elements inside the inlet guide vanes.
C. engine bleed air ducted through the critical areas.
Ans : engine bleed air ducted through the critical areas.
Explanation: NIL.
8. The term 'Ram Ratio' in regard to air intakes is the relationship between.
A. ambient pressure and ambient temperature.
B. ambient temperature and compressor inlet temperature.
C. ambient pressure and compressor inlet pressure.
Ans : ambient pressure and compressor inlet pressure.
Explanation: NIL.
9. An increase in the Ram Ratio of an intake will.
A. have no effect upon the temperature of the air.
B. increase the temperature of the air.
C. decrease the temperature of the air.
Ans : decrease the temperature of the air.
Explanation: NIL.
10. As an aircraft approaches the transonic range, the aerodynamic efficiency of a Pitot type intake.
A. increases due to the ram effect.
B. decreases due to the shock wave.
C. is not effected by forward speed.
Ans : decreases due to the shock wave.
Explanation: NIL.
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