AVIATION INDOCTRINATION

1- The characteristics of fluids are:

(a)- Take on the shape of their
containers (b)- Have the ability to
flow
(c)- Both (a) & (b) are correct

2- The Viscosity is:

(a)- The ability of fluid to move
(b)- The property of a fluid that causes it to resist flowing
(c)- The property of a fluid to flow over a surface

3- If the fluid is thin:

(a)- It can flow easily
(b)- It resists flow
(c)- Non of the above

4- A friction is:
(a)- The resistance of the air
(b)- The resistance that one surface encounters with another
(c)- The resistance that one surface encounters when moving over
another

5- The boundary layer is:

(a)- The layer of air on the top of the wing surface
(b)- The layer of molecules that adhere to the wing surface
(c)- The layer of molecules that separate from the wing surface

6- The pressure is:

(a)- The force applied in a perpendicular direction to the surface of an
object
(b)- The force applied in opposite direction to the surface of
an object (c)- The force applied in a parallel direction to the
surface of an object

7- The atmospheric pressure is one of the basic factors in

weather changes and:
(a)- Helps to lift an aircraft
(b)- actuates some of the important flight
instruments (c)- Both (a) & (b) are correct

8- Some characteristics of the air are:

(a)- Light, has a mass, has a weight and force
(b)- Heavy, has a mass, has a weight and
pressure (c)- has a mass, has a weight and
force

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9- The average pressure exerted by the weight of the atmosphere is:
(a)- 14.70 psi
(b)- 1,013.2 mb
(c)- Both (a) and (b) are correct

10- If the air is less dense, it reduces:

(a)- Power, weight and
lift (b)- Power, thrust
and lift (c)- Thrust, drag
and power

11- The density varies:

(a)- Directly with pressure and inversely with temperature
(b)- Inversely with pressure and directly with
temperature (c)- Non of the above

12- The density is affected by changes in:

(a)- Altitude, temperature and height
(b)- Altitude, temperature and humidity
(c)- Altitude, pressure and humidity

13. The angle formed by the wing chord line and relative wind is called:
(a)- Angle of attack
(b)- Angle of
incidence (c)- Angle
of incline

14. The portion of the airfoil where the airflow over the upper
surface rejoins the lower
Surface airflow is:
(a)- Trailing
edge (b)-
Leading edge
(c)- Tail plane

15. The angle between the wing chord line and a line parallel to
the longitudinal axis of
the air plane is:
(a)- The angle of attack
(b)- The angle of incidence
(c)- The angle of inclination

16. The most common high-lift device is:

(a)- Elevator
(b)- The trailing edge flaps
(c)- Ailerons

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17. The aspect ratio is the relationship between:
(a)- Wing area and average chord
(b)- Length of the wing and total area of
the wing (c)- Wing span divided by its
average chord

18. Stall is caused by:

(a)- Vortex in the wing tip
(b)- Separation of airflow from the wing's upper surface
(c)- Separation of airflow from the wing's and lower surface

19. The types of parasite drags are:

(a)- Form drag, interference drag and induced drag
(b)- Interference drag, skin friction drag and form drag
(c)- Induced drag, skin friction drag and form drag

20. Total drag for an airplane is:

(a)- The sum of the parasite drags and induced drag
(b)- The average between the parasite drag and
induced drag (c)- The deference between the parasite
drag and induced drag

21. Wing span is 100 feet, and wing average chord is 5 feet, so
the aspect ratio is:
(a)- 20 feet.
(b)- 10 feet.
(c)- 50 square feet.

22. When the gear and flaps are up, an air plane is in a:
(a)- Take off
configuration (b)-
Clean configuration (c)-
Landing configuration

23. The characteristic of an airplane in flight that causes it to return to

a condition of
equilibrium after it is disturbed is:
a) Controllability
b) Stability
c) Maneuverability

24. A/C design characteristics are:

a) Stability as a good design A/C
b) A/C must be stable and controllable
c) A/C must be stable, maneuverable and controllable

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25. What is positive static stability?
a) Return to normal flight speed
b) Return to normal flight altitude
c) Return to normal attitude

26. What is stability?

a) Ease to maneuver the A/C.
b) The ability to recover from stall or spin.
c) Flying safety.

27. Flight axis are:

a) Longitudinal, rotational and vertical.
b) Lateral, longitudinal and vertical.
c) Lateral, vertical and gravity axis

28. The rudder movement is controlled in the cockpit by:

a) Moving the control wheel forward and backward
b) Left and right pedals.
c) Turning the control wheel right and left

29. The three axes pass through one point, which is:
a) Center of pressure
b) Center of gravity
c) Center of lift

30. The aileron movement is controlled in the cockpit by:

a) Moving the control wheel forward and backward
b) Left and right pedals.
c) Turning the control wheel right and left

31. In the most airplane structures is include:

(a)- Fuselage, an empennage, landing gear, wings and power plant
(b)- An empennage, landing gear, wings and
power plant (c)- Fuselage, an empennage and
landing gear

32. The most usual form of the fuselage construction being in

modern aircrafts is:
(a)- The monocoque type
(b)- The semi-monocoque type
(c)- The woodcoque type

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33. The main purpose of the airplane wings is:
(a)- To support the airplane in the air
(b)- To take maximum advantage of the lift force
(c)- To carry the fuel tanks

34. The main purpose of the empennage in the airplane is:

(a)- To help the airplane to turn to the left & to the right
(b)- To help the airplane to be stable and maintain a `straight path
through the air
(c)- To give a nice shape of the airplane

35. The stabilator is:

(a)- One piece horizontal stabilizer
(b)- Consist of horizontal stabilizer and
elevator (c)- Vertical stabilizer with
rudder

36. The function of trim tab is:

(a)- To help minimize the pilot workload by aerodynamically
helping him to move a control surface
(b)- Maintain the surface in desired
position (c)- Both (a) and (b) are correct

37. In the airplane the landing gear employing a rear mounted gear
is called:
(a)- Conventional landing
gear (b)- Tail wheel
airplane
(c)- Both (a) and (b) are correct

38. The main purpose of landing gear struts

are: (a)- To support the airplane on the
ground (b)- To absorb of the cock of
landing
(c)- To absorb of the cock of landing and taxiing over rough
ground

39. When the pilot want to stop the airplane, he:

(a)- Press the pedals independent of each
other (b)- Press on the top of each rudder
pedals (c)- Using the hand parking brake

40. The primary function of the piston engine

is: (a)- To provide the power to turn the
propeller (b)- To provide the power for air-
conditioning
(c)- Both (a) and (b) are correct

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41. The functions of the firewall are:
(a)- To protects the occupants in case of fire
(b)- To serves as a mounting point of the
engine (c)- Both (a) and (b) are correct

42. The function of the propeller in the engine is:

(a)- To translates the rotating force of the engine into thrust
(b)- To generate an electrical power for the
instruments (c)- To give a balance for the
airplane in the air

43. The pressure and temperature of the air kerosene in the turbine will:
(a)- Decrease during passage through this element
(b)- Increase during passage through this
element (c)- The same during passage
through this element

44. The four - stroke operating cycle start as follows:

a) Compression _ power _ exhaust _ intake .
b) Intake _ compression _ power _ exhaust .
c) Power _ intake _ exhaust _ compression .

45. The operation principle of float type carburetors based on the:

a) Difference in temperature .
b) Preparation between temp and density .
c) Difference in pressure at venturi .

46. The first indication of carburetor ice in an airplane equipped with

a fixed pitch propeller is:
a) Increase in R.P.M .
b) Decrease in R.P.M .
c) Increase in temperature .

47. Incoming air is mixed with fuel and is delivered to the

combustion chamber by:
a) The throttle .
b) The mixture control knob .
c) The carburetor .

48. Carburetor ice most likely when :

a) Temp above 21℃ humidity below 80%.
b) Temp below 21℃ humidity below 80%.
c) Temp below 21℃ humidity above 80%.

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49. Preignition caused by :
a) Carbon deposited on spark plugs.
b) Carked cylinder at compression chamber.
c) Non of the above.

50. Fuel primer is used at :

a) Hot weather condition.
b) Cold weather condition.
c) Both (a) and (b) are correct.

51. The control over the amount of fuel/air mixture:

a) Maintained by mixture control.
b) Maintained by throttle control.
c) Maintained by throttle and mixture control.

52. Air coming out of venturi:

a) Speed decrease pressure increase.
b) Speed increase pressure decrease.
c) No change.

53. If you do not adjust mixture controller during descent :

a) Fuel mixture will be too rich.
b) Fuel mixture will be too lean.
c) No need to adjust mixture during descent.

54. The purpose of fuel vent in fuel tank:

a) To allow for expansion of fuel due to High temperature.
b) To allow atmospheric pressure in fuel tank as outside
pressure.
c) Both (a) and (b) are correct.

55. Generally speaking the use of carburetor heat tends to:

a) Increase engine performance.
b) Have no effect on engine performance.
c) Decreasing engine performance.

56. What change occurs in fuel/air mixture when carburetor heat

is applied:
a) Decrease in RPM results from the lean mixture.
b) The fuel/air mixture become leaner.
c) The fuel/air mixture become richer.

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57. Filling the fuel tanks after last flight of the day:
a) Prevent moisture condensation.
b) Prevent expansion of the fuel.
c) Force any existing water to the top the tank.

58. The most significant advantage of fuel injection is:

a) Lower operating temperature
b) Lower fuel consumption
c) The relative freedom from the formation of induction icing

59. The four basic component of fuel injection are:

a) Fuel pump, fuel control unit, fuel manifold valve and
fuel discharge nozzle
b) Fuel pump, fuel control unit, fuel manifold valve and spark
plugs.
c) Fuel pump, fuel control unit, fuel manifold valve and fuel tanks

60. The ignition system is consists of:

a) Magnetos, spark plugs, interconnecting wires and ignition switch
b) Magnetos, spark plugs and ignition switch
c) Magnetos, ignition switch and interconnecting wires

61. Most airplanes incorporate a dual ignition system to:

a) Get more engine power
b) Enhance safety and increase reliability of ignition system
c) Increase engine life period

62. You control the operation of the magnetos from the cockpit with:
a) Mixture throttle
b) Ignition switch
c) None of the above

63. Detonation may result if:

a) You allow the engine to over heat
b) You use an improper grade of fuel
c) Both (a) & (b) are correct

64. The main purpose of fuel pressure gauge is:

a) To help pilot in detecting fuel pump malfunctions
b) To monitor the pressure of the engine
c) Non of the above

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65. What is the vapor lock?
a) Blocked in the venturi of the carburetor
b) It happens when the fuel pump running and the fuel tank
is completely dry cause the air to enter the fuel system
c) Blocked in the lines of the oil system

66. The main purpose of fuel strainer is:

a) To pass pure and clean fuel to the engine
b) To remove moisture and other sediments that might be in the
system
c) Both (a) & (b) are correct

67. When you find moisture in the sump?

a) You should continue to drain them until there is no
evidence of contamination
b) You should never take off until you are certain that all
moisture has been removed from the engine fuel system
c) Both (a) & (b) are correct

68. The major refueling hazard is:

a) The fuel coming out of the tank and evaporates
b) The possible combustion of the fuel by a spark that
causes fumes to ignite
c) Non of the above

69. Magnetos switch in the cockpit labeled:

a) R – L Both Start
b) R – L Both Start - OFF
c) OFF – R – L Both Start.

70. In dual magnetos, the magnetos check as follows:

a) Both to R , Both to L
b) Both to L , to R
c) Both to R , to L

71. Low oil pressure may be caused by:

a) Low oil level in oil tank.
b) Clogged oil filter.
c) Oil pump not supply enough pressure.

72. High engine temperature may be caused by:

a) Low oil level in oil tank.
b) Clogged oil line.
c) Both (a) & (b) are correct

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73. Oil quantity of your engine is measured by:

a) Oil quantity gauge.

b) Dipstick on filler cap.
c) Engine sight glass.

74. What action to aid in cooling an engine is overheating during climb:

a) Increases climb speed and increase RPM
b) Reduce climb speed and increase RPM.
c) Reduce rate of climb and increase RPM .

75. High or above normal oil pressure indicates that:

a) Oil pump failure
b) Clogged oil lines
c) No enough oil in the engine

76. The main functions of oil system are:

a) Lubrication of engine moving parts and cooling of the engine
b) Increase engine life and increase horse power
c) Decrease engine temperature and increase engine pressure

77. The advantages of wet-sump system are:

a) Simple, no leakage
b) Simple, reliable and suitable for most small reciprocating engines
c) Reliable, light and have drain port

78. Excessively high engine temperature can result in:

a) Loss of power, high oil consumption and engine damage
b) Increase engine power and high oil pressure
c) Decrease engine efficiency, high oil consumption and high oil
pressure

79. The most uses of exhaust system are:

a) To vent burned gases overboard, to provide heat for cabin
and for defrosting the windscreen
b) To vent burned gases overboard and to provide heat for cabin
c) Non of the above

80. Due to the speed differential caused when the propeller rotates:
a) Low-speed airfoils are used near the hub and high-speed
airfoils are used near the tip
b) High-speed airfoils are used near the hub and low-speed
airfoils are used near the tip
c) Non of the above

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81. The amount of thrust produced depends on:
a) Propeller shape, number of blades
b) Propeller shape, rotational speed and position relative to
the oncoming air .
c) Propeller shape, rotational speed and number of blades

82. What is the main advantage of a constant-speed propeller?

a) Easy to operate
b) Give more thrust at high altitude
c) Convert high percentage of the engine's power into thrust over
a wide range of r.p.m. and airspeed combinations

83. What is the main purpose of propeller control?

a) Is used to adjust fuel/air mixture in the engine
b) Is used to change the pitch of the propeller blades
c) Is used to increase and decrease the thrust

84. The tachometer indicates:

a) The oil temperature in the engine
b) The fuel quantity in the fuel tanks
c) The engine revolution per minute (r.p.m)

85. The advantages of the alternator are:

a) Light weight, lower maintenance and uniform output
b) Light weight, lower maintenance
c) easy to maintenance, easy accessibility and constant output

86. The function of the alternator is:

a) produce DC and then convert it to AC

b) produce AC and then convert it to DC
c) Non of the above

87. Why you should make sure all electrical equipments are turned
off before you start
the engine?
a) To protect sensitive components from damage
b) To prevent from electrical charge shock
c) Both (a) & (b) are correct

88. The major components of electrical system are:

a) alternator, battery, ammeter, and circuit breakers
b) alternator, battery, generator and ammeter
c) alternator, battery, ammeter, master switch and circuit breakers

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89. Propulsion is means of:
(a)- Creating force leading to movement.
(b)- The action of driving or pushing
forward. (c)- Both (a) & (b) are correct.

90. The main parameters of the engine design are:

(a)- Maximum engine thrust, fuel consumption, engine mass and engine
geometry.
(b)- Maximum engine thrust, engine mass and engine
geometry (c)- Maximum engine thrust, fuel
consumption and engine mass

91. One of the main purposes of the nacelle is:

(a)- To protect the inlet parts of the engine from phenomena relating to
icing.
(b)- To generate thrust
(c)- To give a nice shape to the engine

92. The materials used for the construction of a combustion

chamber contains of:
(a)- Important fraction of nickel and
chrome (b)- Important fraction of nickel
and aluminum (c)- Important fraction of
copper and chrome

93. The main function of turbine rotor blades is to:

(a)- Transform the temperature and pressure energy into
electrical energy which turns
the compressor
(b)- Transform the temperature and pressure energy into
mechanical energy which
turns the compressor
(c)- Transform the pressure energy only into mechanical energy
which turns the
compressor

94. The turbo fan engine has:

(a)- Less thrust on the same amount of fuel than turbo jet.
(b)- Greater thrust on the same amount of fuel than turbo
jet. (c)- The same thrust on the same amount of fuel
than turbo jet.

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95. The main purpose of the Exhaust nozzle is:
(a)- To increase the velocity of the exhaust gases
(b)- To decrease the velocity of the exhaust
gases (c)- To reduce the temperature of the
exhaust gases

96. The main important figures in the airlines and cargo planes are:
(a)- High thrust and low fuel usage
(b)- High engine efficiency and high rate of
climb (c)- High engine efficiency and low
fuel usage

97. The ram jet engine:

(a)- Has no moving parts
(b)- Is used to fly at supersonic
speed (c)- Both (a) & (b) are
correct

98. The principle of used afterburning in the outlet tube is:

(a)- To give minimize the noise of the engine
(b)- To inject extra kerosene and burned the mixture and give higher
speed
(c)- To rise the compressed air temperature

99. One of the main purposes of the nacelle is:

(a)- To protect the inlet parts of the engine from phenomena relating to
icing.
(b)- To generate thrust
(c)- To give a nice shape to the engine

100. A ram jet engine is suitable for:

(a)- The glider aircrafts

(b)- The subsonic
aircrafts (c)- The
military aircrafts

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