10 Feb 2014

JET ENGINE - FEB 2003 SESSION, (SUBJECTIVE)




1. What is cascade, how it helps turbofan / turbojet engine explain?

2. Wright the types of thrust reverser. Explain mechanical blockage type with sketch

3. What are the advantage & disadvantage of centrifugal compressor?

4. What is primary principal of pressurization breather system explain pressurization breather system with sketch how it works?

5. What is vortices dissipater explain with sketch?

6. Explain the operation of HMF unit metering vale with sketch?

7. What are causes of oil temperature high give remedial action for each cause?

8. What are the combustor emissions give their effect?

9. Wright the operating principal of turbojet and ice separator inlet screen?

10. What are the forces acting on rotating propeller explain each?

11. Wright principal of Hamilton propeller feathering with sketch?

12. Explain the procedure for finding ------------ of the oil engines?

13. What is slip explain?

14. Explain how turbofan engine is replacing turboprop engines

15. What are the FOD avoiding precautions turboprop engines?

16. Using Newton’s seonel 100 of notion derive formula for thrust calculation

17. What is the not streak explain give reason for streak

18. FFX, FPM & EGT northern what are causes remedial action?

............................................................................................................................

32. In the good combustion chamber
(a)    Increase velocity
(b)   Diffuse
(c)    Convert pr to kinetic energy
(d)   As 1 or 2

33. In hi energy capacitor ignition system
(a)    In hi energy capacitor ignition system
(b)   Hi energy is produced spark
(c)    Hi energy is produced spark using short time
(d)   Lo energy is produced spark using short time

34. Acceleration of deceleration is controlled for
(a)    Blow out provision
(b)   Crack of leading of blade and case
(c)    Expansion and contraction of blade and case
(d)   None of the above are correct 

35. In HMF unit hydro mechanical fuel unit
(a)    Valve area is varied (fixed pr. df)
(b)    
(c)     
(d)    

36. For good lubrication oil used synthetic oil
(a)    Minimum wax sulpher us sediment
(b)   Operates in hi temp is gives low vapour
(c)    Very load carrying capacity
(d)   All of the above

37. If anti ice valve is operative in flight then what is positive mean of finishing that anticity system working properly
(a)    EGT increase
(b)   RPM  & EPR fluctuation
(c)    Fuel flow rate
(d)   As in 1 & 2

Answers: 
32 – b, 33 – b, 34 – a, 35 -  , 36 – d, 37 – a, d