Feb 14

1. The oil pressure indicator usually shows

1. Engine oil pressure2. Engine oil pump dischare pressure3. Quantity of engine oil4. All

2. An immediate shunting of fuel from nozzlewhen the engine is shut down xxxxxxxxx simplex fuel nozzle by the

1. Staging valve2. Priority valve3. Check valve

3. The purpose of three dimensional cam in fuel control computer is

1. To hold TIT near its allowable limit by providing a predetermined fuel schedule2. Prevent compressor surge 3. prevent compressor stall 4. All

4. What is the purpose of last chance of fuels

1. To prevent damage to oil spray2. To filter the oil immediately before it enters the main opening3. To assure a clean supply of oil to lubrication system

5. MTCS

1. A Full Authority Digital Electronic Control, controls the hydro mechanical fuel control2. A Full Authority Digital Electronic Control does not controls the hydro mechanical fuel control3. The thrust setting for a FADEC engine is N24. All

6. After continuous operation, the oil quantity keeps on increasing instead of decreasing the system is suspected to

1. Breather lines2. FCOC3. Fuel ingestion at bearing4. All

7 which of following properties is unique and favourable support usage of synthetic oil for turbine engine lubrication

1. Free from evaporation , carbon and gum deposits2. Least metal corrosion and gear scuffing3. Good lubrication even at high temp4. All

8. In the pressure relief valve lubrication system, if bearing chamber pressure is not xxxxx relief valve spring, the flow rate of oil to bearing shall

1. Increase with increase RPM2. Decrease with increase in RPM3. Remain constant at all RPM4. Be directly proportional to RPM

9.  calorific value

1. Per pound of fuel increase with increasing molecular weight2. Of fuel represents its heat energy for a given weight3. Per pound of fuel increase with increasing carbon/hydrogen ratio

10. the turbine engine ignition system require high energy because

1. To ignite the fuel under condition of high altitude and high temp2. The applied voltage is much greater3. Both 2 and 3 are correct

11. the capacitor type ignition system is used on turbine engines primarily because of its

1. High voltage & high amperage2. High voltage and long life3. High voltage and high heat intensity4. All

12. Many turbine powered a/c have auto ignition circuit installed. This is designed primarily to ensure

1. Instantaneous ignition of engines begins to lose power from inlet icing and is in danger of flame out

2. Automatically cut of the starter when engine reaches self sustaining RPM during engine starting3. For relighting/starting engine in air4. ALL

13. the ignition plug which slightly projects into combustion chamber liner in order to provide and effective spark is

1. Annular gap type2. Constrained gap type3. Conventional spark plug4. none

14 in event of pneumatic start valve wil not operate and manual over ride must be used the starter T handle must be closed at schedule start drop out because

1. The starter will over hear2. The starte will speed at given N23. The starter will be blown over board

15.In typical starter generator syste under which of the following starting condition it may be necceesary to use the start stop switch

1. Hung start2. Hot start3. Contacts start open

16. Which instrument on gas turbine engine should be monitored to minimize the possibility of hot start

1. RPM indicator2. Turbine inlet temperature3. Torquemeter4. ALL

17. The EPR indicator is direct indication of

1. Engine thrust being produced2. Pressure ratio between front and aft end of compressor3. Ratio of engine RPM to compressor pressure

18. The EGT indicator on gas turbine engine provides

1. Exhaust temp2. Temp of exhaust gases as they pass exhaust cone3. Turbine inlet temp4. 2 and 3 are correct

19. EPR is total pressure ratio between

1. Aft end of compressor and aft end of turbine2. Front of compressor and end of turbine3. Front of engine inlet and aft end of compressor

20. Oil pressure indicating system consist of

1. thermocouple type indicating system2. Autsyn design type indicating system3. Resistance bulb type indicating system4. ALL

21. Position of measurement of actuator in turbine engine is done by

1. LVDT2. RVDT3. Resolver4. All

22. the source of high volume air flow required for sir turbine starter is/are

1. Auxiliary gas turbine engine carried on board2. Auxiliary gas turbine engine maintained as part of airport facility3. Compressed air bleed from other running engine4. All.

23. Which cleaning solution must be avoided for cleaning parts of titanium

1. Organic solvent2. Trichloroethylene3. Carbon solvents4. All

24. An engine placed in metal shipping container for long term storage. A safe humidity level is indicated by

1. Yellow color2. Blue color3. Pink color4. Brown color

25. if cable control is used for engine,the cushion in flight deck control lever is obtained when

1. Control lever on engine hits its stop before control lever in cabib hits its stop2. Control lever in cabib hits its stop before control lever on engine hits its stop3. Both control lever on engine asc well as cabin hits its stop simultaneously

26. What are the engine parameters to be monitored to determine aerodynamic performance of engine?

1. EPR, Fuel Flow, vibration amplitude, oil consumption2. EPR, Fuel Flow, oil consumption3. EPR, Fuel Flow, EGT, Throttle position4. EPR, Fuel Flow, vibration amplitude, Throttle position

27. Thrust reverser is ost effective on ground wen speed is

1. High2. Low3. Moderate4. Subsonic

28. Hot spots on tail cone of turbine engine are possible indiction of malfunctioning’fuel nozzle on

1. A faulty combustion chamber2. A faulty fuel pump3. A fuel igniter plug

29. in hydro mechanical FCU fitted with transport turbin engine

1. When CDP sense is lost at higher ower the engine RPM stabilize a idle RPM2. When CDP sense is lost at idle condition the engine RPM to the xxxxxx RPM3. If CDP sense is lost at starting stage the engine will hung start4. all

30. an AME observes that idle TGT remains same after substantial change OF OAT. The engine operation are normal at high power. The snag is at

1. CIT system2. CDO system3. FCU temp compensator4. Throttle rigging mismatch

31. the variable compressor stator vane system controls the stall margin of Gas turbine engine

1. Reducing airflow into the engine at low power setting2. Reducing airflow into engine at high power settings3. Dumping unwanted air over board

33. an engine trim curve is used for trimming an engine in the field to

1. Up trim engines to compensate for small inlet duct losses or air bleed losses2. Compensate for any thrust deterioration which might result from accumulated deposits of dirt

and/or scale on compressor blades3. Both 1 and 24. Down trim an engine so as to bring the EGT to acceptable liits as specified

34. a system of routine comparison of engine performance parameters xxxxxxxx xxxxxx xxxxx same parameters established when engine was new and xxxxxxxxxx is called

1. On condition maintenance2. Power assurance check3. Trend monitoring

35. engine ( xxxxx /fumbles) during starting and at low power cruise condition.. the casuse is

1. P & D valve malfunction2. Cracked air duct3. Fuel control malfunction4. All

36. APU has provision for auto shut down due to

1. High oil pressure 2. Over sped3. High oil temp4. All

37. operation of an apu is monitored by

1. Oil pressure indicating system2. Oil temp indicating system3. Exhaust gas temp indicting system4. All

38. In flight failure of compressor air bleed valve( jammed open) will make the engine run at

1. Higher RPM than normal RPM2. Lower RPM tha n normal RPM3. Will not effect engine operation

39. An increase in the airspeed with all else remaining , will cause turbine engine thrust to-

1. Increase2. Decrease3. Remain same

40. The anti surge device in a turbine engine are-

1. Diffuser guide vane, variable guide vane, bleed valves2. Variable air intake, .bleed valve, acceleration control units3. Variable area tail pipe, diffuser guide vanes, acceleration control units

41. The formula for detrmining the power required by compressor is

1. Cp Δ TWs 550/ 7782. Cv Δ TWs 778/ 550

3. Cp Δ TWs 778/ 5504. Cv Δ TWs778/ 450

Confusion in TWs.. In place of “ s’ anything can be there

42. identify the cycle/engine represented by graph given in figure

Graph is not clear but its something like this.. Copied from net

1. Otto cycle2. Brayton cycle3. Constant pressure engine4. Constant temp engine

43.in gas turbine engine conversion of fuel energy into kinetic energy determines the

1. Thermal efficiency2. Propulsive efficiency3. External efficiency4. Overall efficiency

44. a major disadvantage of turboprop engine over turbojet engine is

1. Develop high thrust at low airspeed2. More complicated desighn3. High TSFC4. Poor reverse thrust

45. A good subsonic inlet duct will have

1. High ram recovery point2. Low ram recovery point3. Low duct pressure efficiency4. All

46. MTCS about axial flow compressor

1. The delicate bleeding, especially towards rear, makes this compressor less susceptible to foreign object damage

2. Number of compressor blades and stator vanes require close fits for efficient air pumping3. It has much wide range of possible operating condition4. All

47. Which type of axial flow compressor has advantage of tip speed limitation

1. Constant inside diameter compressor2. Constant outside diameter compressor3. Tapered discharge nozzle compressor4. Multi spool compressor

48. how many igniters are generally used in combustion section?

1. One2. Two3. Three4. Four

49. which fuel nozzle design meet the engines fuel requiremts while maintaining good automation?

1. Swirl type nozzle2. Two stage fuel nozzle3. Simplex nozzle4. ALL

50. to distribute the power load evenly from the base to tip of turbine blade the type of turbine blades used are

1. Impulse type2. Reaction type3. Impulse type at root and reaction type at tip4. Reaction type at root and impulse type at tip

51. in exhaust are oil is found after engine is shut down. It indicates

1. Engine need replacement2. Bearing needs replacement3. Oil consumption is very high4. Air pressurization of bearing seal is lost

52. Mark the correct statement with respect to usage of oil seals in turbine engine

1. Neoprene elastomer seals are effective at high temp application2. Carbon seals should never be used at hot section of the engines3. Labyrinth seals are effective only in high speed application4. All

53. the analysis of filter particles shows that there are magnesium particles present. It implies that likely part of damage is

1. Bearing2. Labyrinth seals3. Gearbox

54. vapour lock in the fuel system is is caused by

1. Low atmospheric pressure2. Turbulence of fuel3. As in 1 and 2 and excessive fuel xxxxx

55. swirl type fuel nozzle are usually used to

1. Provide rapid burning2. Handle large quantity of fuel3. Handle large quantity of air4. All

56. The synthetic oils are preffered for lubrication in turbine engine than petroleum oils because

1. It is more vicious and can take higher load at high RPM2. It has less tendency to deposit laquer and coke and less tendency to evaporate at hih temp3. It does not tend to blister or remove paint whenever it comes in contact the surface that is painted4. All

57. What operation force causes xxxxx stress on a propeller

1. Serodynamic twisting force2. Centrifugal force3. Thrust bending force