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INDIGO JET ENGINES

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INDIGO JET ENGINES
INDIGO JET ENGINES
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#1. The positions of the intake and exhaust valve at the end of the power stroke are :

#2. The useful work area in an ideal Otto engine indicator diagram is enclosed by the following gas state change lines

#3. 2 adiabatic, 1 isochoric and 1 isobaric lines.

#4. In most cases aeroplane piston engines are short stroke engines. This permits a :

#5. The working cycle of a four-stroke engine is :

#6. The crank assembly consists of

#7. The ignition occurs in each cylinder of an four-stroke engine (TDC = Top Dead Center)

#8. The power output of a piston engine can be calculated by :

#9. The power of a piston engine which will be measured by using a friction brake is :

#10. The torque of an aeroplane engine can be measured at the:

#11. On four-stroke piston engines, the theoretical valve and ignition settings are readjusted in order to increase the:

#12. In a four-stroke piston engine, the only ""driving"" stroke is :

#13. A piston engine compression ratio is the ratio of the :

#14. The compression ratio of a piston engine is the ratio of the:

#15. The part of a piston engine that transforms reciprocating movement into rotary motion is termed the :

#16. The reading on the oil pressure gauge is the:

#17. For a given type of oil, the oil viscosity depends on the:

#18. For internal cooling,reciprocating engines are especially dependent on:

#19. In addition to the fire hazard introduced, excessive priming should be avoided because :

#20. The oil system for a piston engine incorporates an oil cooler that is fitted :

#21. Low oil pressure is sometimes the result of a

#22. The purpose of a distributor in an ignition system is to distribute:

#23. The very rapid magnetic field changes (flux) around the primary coil in a magneto are accomplished by the:

#24. The purpose of an ignition switch is to :

#25. Under normal running conditions a magneto draws primary current :

#26. Ignition systems of piston engines are :

#27. Prolonged running at low rpm may have an adverse effect on the efficiency of the:

#28. An aircraft magneto is switched off by

#29. An impulse magneto coupling

#30. If an engine fails to stop with the magneto switch in OFF position, the cause may be :

#31. If the ground wire between the magneto and the ignition switch becomes disconnected, the most noticeable result will be that the engine

#32. An impulse coupling used on a magneto for a piston engine is for

#33. In a piston engine, magnetos are used to produce the spark which ignites the fuel/ air mixture. The operating principle of magnetos consists in :

#34. When the magneto selector switch is set to ""OFF"" position, the piston engine continues to run normally.The most probable cause of this failure is that:

#35. On modern carburettors, the variations of mixture ratios are obtained by the adjustment of :

#36. A fuel strainer when fitted to a carburettor will be positioned :

#37. The purpose of the venturi in a carburettor is to:

#38. In which sections of the carburettor would icing most likely occur?

#39. The operating principle of float-type carburettors is based on the:

#40. In an engine equipped with a float-type carburettor, the low temperature that causes carburettor ice is normally the result of:

#41. Which statement is true concerning the effect of the application of carburettor heat?

#42. Vapour lock is :

#43. With respect to a piston engined aircraft, ice in the carburettor :

#44. To ensure that the fuel flow is kept directly proportional to the volume of air flowing through the choke, thus preventing the main jet supplying excessive fuel as engine speed is increased, a carburettor is fitted with :

#45. Spark timing is related to engine speed in the way that the:

#46. ""Vapor lock"" is the phenomenon by which:

#47. The power of a piston engine decreases during climb with a constant power lever setting, because of the decreasing :

#48. The conditions under which you obtain the highest engine power are :

#49. The power output of a normally aspirated piston engine increases with increasing altitude at constant Manifold Air Pressure (MAP) and RPM because of the :

#50. During climb with constant Manifold Air Pressure (MAP) and RPM indication and constant mixture setting, the power output of a piston engine :

#51. The global output of a piston engine is of:(global output = Thermal energy corresponding to the available shaft/power over the total thermal energy produced).

#52. A turbocharger system is normally driven by:

#53. A turbocharger consists of a :

#54. The air in a piston engine turbo-supercharger centrifugal compressor :

#55. n a piston engine, turbocharger boost pressure may be monitored by :

#56. The primary purpose of a supercharger is to :

#57. The kind of compressor normally used as a supercharger is :

#58. What can be the consequence during a descent with a fully open throttle if the waste gate is seized ?

#59. One of the advantages of a turbosupercharger is that :

#60. The octane rating of a fuel characterises the :

#61. Fuel stored in aircraft tanks will accumulate moisture. The most practical way to minimize this when an aircraft is used every day or so is to :

#62. The octane rating of a fuel and compression ratio of a piston engine have which of the following relations?

#63. A piston engine may use a fuel of a different grade than the recommended:

#64. A rich mixture setting has to be used during climb segments. This results in a

#65. Max. Exhaust Gas Temperature is theoretically associated with :

#66. For piston engines, mixture ratio is the ratio between the :

#67. Specific fuel consumption is defined as the :

#68. In a piston engine, the purpose of an altitude mixture control is to :

#69. The mixture control for a carburettor achieves its control by:

#70. An excessively rich mixture can be detected by :

#71. When leaning the mixture for the most economic cruise fuel flow, excessive leaning will cause :

#72. The main purpose of the mixture control is to:

#73. Fuel/air ratio is the ratio between the:

#74. Overheating of a piston engine is likely to result from an excessively :

#75. In a piston engine if the ratio of air to fuel, by weight, is approximately 9:1, the mixture is said to be :

#76. For a piston engine, the ideal fuel/air mixture corresponding to a richness of 1 is obtained for a weight ratio of:

#77. (For this question use appendix )On the attached diagram showing the power output of a piston engine as a function of mixture richness, best economy is at the point marked:

#78. The richness of a fuel/air mixture ratio is the :

#79. The feathering pump of a hydraulic variable-pitch propeller:

#80. Consider the variable-pitch propeller of a turbo-prop.During deceleration :

#81. The pitch angle of a constant-speed propeller

#82. A propeller blade is twisted, so as to

#83. A pilot normally uses the propeller autofeather system during :

#84. When increasing true airspeed with a constant engine RPM, the angle of attack of a fixed pitch propeller :

#85. When TAS increases, the pitch angle of a constant speed propeller (RPM and MAP levers are not moved) :

#86. The main advantage of a constant speed propeller as compared to a fixed pitch propeller is a :

#87. To unfeather a propeller during flight you have to :

#88. In case of engine failure during flight the blades of the constant speed propeller in a single engine aeroplane, not fitted with feathering system

#89. For take-off, the correct combination of propeller pitch (1), and propeller lever position (2) at brake release is :

#90. On a normally aspirated aero-engine fitted with a fixed pitch propeller :

#91. An asymmetric loading (p-factor) on the propeller exists ..

#92. In twin-engine aeroplanes with right turning propellers

#93. In general, in twin-engine aeroplanes with 'constant speed propeller'

#94. In modern aircraft, a pilot can actuate the feather system by :

#95. Fixed-pitch propellers are usually designed for maximum efficiency at :

#96. Which of the following qualitative statements about a fixed propeller optimized for cruise condition, is true for the take-off case? The angle of attack of the propeller :

#97. The 'constant speed propeller' has

#98. What will happen to the geometrical pitch angle of a ""constant speed propeller"" if the manifold pressure is increased ?

#99. The 'slipstream effect' of a propeller is most prominent at:

#100. The pitch angle of a propeller is the angle between the :

#101. When in flight, a piston engine is stopped and the propeller blade pitch angle is near 90°, the propeller is said to be...

#102. During a power change on an engine equipped with a constant speed propeller, a wrong combination of manifold pressure and RPM values results in excessive pressures in the cylinders. This is the case when one simultaneously selects a ...

#103. From the cruise, with all the parameters correctly set, if the altitude is reduced, to maintain the same mixture the fuel flow should:

#104. When applying carburettor heating :

#105. When the pilot moves the mixture lever of a piston engine towards a lean position the :

#106. When altitude increases without adjustment of the mixture ratio, the piston engine performance is affected because of a :

#107. When changing power on engines equipped with constant-speed propeller, engine overload is avoided by :

#108. To adjust the mixture ratio of a piston engine when altitude increases, means to:

#109. The maximum horsepower output which can be obtained from an engine when it is operated at specified rpm and manifold pressure conditons established as safe for continuous operation is termed :

#110. With which instrument(s) do you monitor the power output of an aeroplane fitted with a fixed pitch propeller?

#111. An EGT (Exhaust Gas Temperature) indicator for a piston engine is used to :

#112. During climb with constant throttle and RPM lever setting (mixture being constant) the :

#113. The conditions which can cause knocking are :

#114. Which of the following factors would be likely to increase the possibility of detonation occurring within a piston engine ?

#115. On a a normally aspirated engine (non turbo-charged), the manifold pressure gauge always indicates...

#116. Spark plug fouling is more likely to happen if :

#117. Pre-ignition refers to the condition that may arise when :

#118. With a piston engine, when detonation is recognised, you:

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INDIGO JET ENGINES
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