AGK 021 & 022

1. The battery master switch should be turned to OFF after the engine is stopped to avoid the battery discharging through the:

Alternator or generator.

Magnetos.

Electrical services connected to it.

Ignition switch.

2. In the aircraft tanks, fuel is most likely to be contaminated by water from:

Leaks in the tanks that have let in rain.

Poorly fitting fuel caps.

Contamination during re-fuelling.

Atmospheric air remaining in the tanks.

3. Why do aircraft engine ignition systems incorporate a means of spark augmentation?

Because, at high engine speeds, a fat spark is needed to extract maximum power from the air-fuel mixture.

In order to overcome the problem of spark-retard during starting.

All answers are correct.

Because the speed of rotation of the engine, during starting, is too low for the magneto to produce enough energy to ignite the air-fuel mixture.

4. Where, in an aircraft engine fuel system, is the electric fuel-boost pump normally fitted?

At the lowest point of the fuel tank.

Between the mechanical fuel pump and the carburettor.

At the highest point of the fuel tank.

Immediately adjacent to the mechanical fuel pump.

5. Blade angle ____ from the hub to the tip of a propeller blade in order to maintain an optimal ____ from hub to tip.

Decreases, Geometric Pitch.

Increases, Angle of Attack.

Decreases, Angle of Attack.

Increases, Effective Pitch.

6. If a flight is made from an area of high pressure into an area of low pressure without the altimeter setting being adjusted, the aircraft true altitude:

Increases.

Stays unchanged.

Decreases.

Will be unreliable.

7. What would be the indication of an aircraft altimeter if the pilot fails to set QNH during descent, and therefore lives the instrument set to the standard pressure?

The airport heigh above the pressure plane 1013.2 hPa.

The airport elevation.

Zero.

The indication is not usable.

8. While taxying in an aircraft fitted with a fixed pitch propeller, you suspect that you have carburettor icing. The correct action to take would be to:

Avoid the use of carburettor heat on the ground, and rely on the heat of the engine within the cowlings to melt the ice.

Select carburettor heat to fully hot and leave this setting selected until you have taken off and are climbing away.

Select carburettor heat to fully hot; then select cold as the rpm drops.

Select carburettor heat to fully hot. Then, before take-off, select carburettor heat cold, making sure that the engine develops the correct minimum take-off rpm.

9. If a pilot changes the altimeter setting to a lower pressure, the altitude indication will:

Increase.

Stay unchanged.

Unreliable.

Decrease.

10. The power output of an internal combustion engine can be increased by:

Decreasing the area of the cylinder.

Decreasing the length of the stroke.

Increasing the engine R.P.M.

Increasing the size of the fuel tank.

11. Detonation is:

Cannot be identified externally.

Harmful to the pistons.

Also known as 'piston slap'.

Part of normal engine running

12. A reciprocating aviation engine develops the highest power:

In level flight at low altitude.

During takeoff with full RPM.

During takeoff.

At high altitudes.

13. Oil in a reciprocating engine serves:

For quiet engine operating only.

To increase mixture combustion temperature in the cylinders.

For lubricating and cooling of the engine.

As additive for proper fuel/air which burns in the cylinders.

14. To assist in reducing the temperature of the engine:

The cowl flaps can be closed.

The air-fuel mixture can be richened.

The airspeed can be reduced.

The air-fuel mixture can be weakened.

15. A Direction lndicator:

Provides a stable reference in azimuth and elevation for maintaining accurate headings and pitch attitudes.

Suffers from apparent drift of the gyro from the fixed position in space to which it was aligned, produced by Earth rotation.

Is not affected by drift produced from mechanical friction in the gyro gimbal bearings.

Is badly affected by acceleration in a turn.

16. When an aircraft is in flight, the pressure sensed by the forward facing hole in the pitot tube is:

Total pressure plus dynamic pressure.

Static pressure only.

Dynamic pressure only.

Dynamic pressure plus static pressure.

17. What will be the consequence for the validity of an aircraft's arworthiness f the aircraft is not maintained in accordance with the approved maintenance schedule detailed in the Certificate of Airworthiness ( C of A)?

The C of A will be rendered invalid until such time as the required maintenance is completed.

The validity of the C of A will not be affected.

The aircraft owner must apply to the CAA for an exemption from the required maintenance schedule.

The C of A must be renewed before the aircraft may fly.

18. On your instrument panel, the suction gauge is showing system failure. However, the gyrodriven instruments appear to be functioning normally, and the Low Vacuum Warning Light is off. Where do you think the problem lies?

With the Low Vacuum Warning Light.

In the gyro driven instruments.

In the suction gauge.

In the suction system.

19. Carbon monoxide gas, which is highly toxic, may enter the aeroplane cabin in flight because of an exhaust system defect. Carbon Monoxide:

May be identified by its strong smell.

Is odourless and colourless.

May be identified by its grey colour.

Has a very distinctive taste.

20. If primary structure breaks during the flight it causes:

Changes the load factor category one step lower

Does not cause immediate danger

An instant accident

Does not have an effect on aviation safety

21. The correct working cycle of a four stroke engine is:

Exhaust power induction, compression.

Induction, power, compression, exhaust.

Exhaust, induction, power, compression.

Induction, compression, power, exhaust.

22. Which of the following is an appropriate action to take if you have a carburettor fire on startup?

Turn the starter switch to "Off".

All answers are correct.

Deselect carburettor heat.

Select mixture control to Idle Cut Off (ICO).

23. If set to QNH, what will be aircraft altimeter reading after landing?

Airfield height above the pressure plane 1013,2 hPa.

Airfield height above the mean sea level.

Airfield pressure altitude above the standard value.

Zero.

24. Carburetor heat of a piston engine:

Decreases significantly fuel consumption

Increases significantly fuel consumption

Does not have effect on fuel consumption

Leans fuel mixture

25. It is possible to get carburettor icing when the relative humidity is unknown within a temperature range of:

At any temperature.

-30°C to +10°C.

-20°C to +10°C.

0°C and below.

26. The main advantage of an alternator over a generator is that:

A generator can only produce alternating current.

An alternator produces direct current from its armature.

An alternator will give almost full power at engine idling speed.

The output of a generator fluctuates too much.

27. When the engine is stopped, the main source of electrical power is the:

Battery.

Magneto.

Circuit breaker.

Generator or alternator.

28. While carrying out the Dead Cut Check, with the right magneto selected, you notice that the engine falters, and you suspect it will stop running. What should you do?

Quickly switch to the left magneto.

Quickly switch to both magnetos.

Allow the engine to stop completely, the fault must be find out before the next flight is conducted.

Open the throttle to keep the engine running, and then select both magnetos.

29. The diagram shows a light aircraft electrical power system, which employs a centre-zero reading ammeter. (See LAPL/PPL 020-03). In flight with the battery fully charged and the battery switch ON, you would expect the ammeter to be:

To the right showing a large positive reading.

Fluctuating, but mainly showing a negative reading.

In the centre-zero position.

To the left showing a negative reading.

30. Aircraft's primary structures include:

Navigation and landing lights.

Fuselage nose, trailing edge panels, landing gear door.

Wing spars, wing skin plateswing and stabilizer attachment fittings.

Cam plates, cover plates, trim tabs.

31. If the power supply to the pitot heater failed during flight in icing conditions and the aircraft subsequently descended, the readings on the Altimeter/the VSI/the ASI would, if ice had blocked the pitot (Total Pressure) tube:

Read Correctly / Read Correctly / Over-read.

Read Correctly / Read Correctly / Untrustworthy.

Under-read / Read Correctly / Over-read.

Read Correctly / Under-read / Over-read.

32. An engine that does not have a carburettor but rather metered fuel that is fed under:

Pressure into the induction manifold, is said to have.

Metering carburettor.

Fuel injection.

Supercharging.

33. In what flight condition is a torque effect the greatest in a single-engine airplane?

Low airspeed, low power, low angle of attack.

Low airspeed, high power, high angle of attack.

High airspeed, low power, high angle of attack.

High airspeed, high power, high angle of attack.

34. How soon after starting a cold aircraft engine should the oil pressure gauge give an indication?

Within 30 seconds; otherwise shut down the engine.

Immediately; otherwise shut down the engine.

As long as the oil levels were at an adequate level before start-up, and RPM is within limits, it is probable that the oil pressure gauge is faulty and should be reported after the flight.

By the time pre-flight checks are complete; otherwise shut down the engine.

35. An accelerator pump is used to prevent a "flat spot". A "flat spot" is:

When the throttle is opened quickly and the mixture becomes temporarily too rich.

When the throttle is closed and the mixture becomes temporarily too rich.

When the throttle is closed quickly and the engine is starved of fuel.

When the throttle is opened quickly and the demand for fuel cannot be met immediately.

36. It is best to run the engine with the mixture:

Slightly weak, as the remaining air helps cool the engine.

Slightly rich, as the remaining fuel helps cool the engine.

Chemically correct as this is most efficient.

Slightly rich, as the remaining air helps cool the engine.

37. In fuel sample water appears as:

Bubbles at the bottom of the sample

Multicoloured spots at the bottom of the sample

Bubbles at the top of the sample

Multicoloured spots at the surface of the sample

38. lt is important to ensure the priming pump is locked after use because:

It may cause fuel to be sucked from the fuel tank into the carburettor, causing an extremely rich mixture.

It may cause a fuel leak, resulting in an increased fire risk.

If it vibrates closed, it will cause the engine to stop.

It may cause fuel to be sucked from the fuel strainer into the inlet manifold, causing an extremely rich mixture.

39. On a light aircraft fitted with a mechanically steered nose wheel, steering on the ground is normally effected by:

Cables operated from the aileron control wheel.

Hydraulic jacks which allow self-centring.

Use of the differential braking technique, only.

Control rods/cables operated by the rudder pedals.

40. While cruising at 9,500 feet MSL, the fuel/air mixture is properly adjusted. What will occur if a descent to 4,500 feet MSL is made without readjusting the mixture?

There will be more fuel in the cylinders than is needed for normal combustion, and the excess fuel will absorb heat and cool the engine.

The fuel/air mixture may become excessively lean.

The fuel/air mixture may become excessively lean and may cause pre-ignition.

The excessively rich mixture will create higher cylinder head temperatures and may cause detonation.

41. What would be the most likely cause of fluctuating oil pressure in an aircraft engine?

Faulty oil pressure indicator.

Loose prop seal.

Low oil level.

Worn or loose bearing.

42. In a dive, with the throttle setting constant, the engine R.P.M. of an aircraft fitted with a fixed pitch propeller will:

Increase if the airspeed is allowed to increase.

Decrease as long as the throttle setting is not changed.

Decrease as the airspeed increases.

Remain constant whatever the airspeed.

43. To work at its highest efficiency, the engine:

Oil system must constantly be supplied with hot oil.

Must be used at high altitude to take advantage of the cooling effect of the atmosphere.

Needs to be at the lowest temperature consistent with safe operation.

Needs to be at the highest temperature consistent with safe operation.

44. What change occurs in the fuel/air mixture when carburettor heat is applied?

A decrease in RPM results from the lean mixture.

The fuel/air mixture becomes leaner.

The fuel/air mixture becomes richer.

The fuel/air mixture stays the same.

45. Transition level is:

Flight level where pilot changes to QNH setting

FL 50

5000ft

Altitude where pilot changes to QNE setting

46. Which of the following will increase the angle of attack of a fixed pitch propeller blade?

Increased TAS and decreased RPM.

Increased TAS and increased RPM.

Decreased TAS and increased RPM.

Decreased TAS and decreased RPM.

47. Pitot static tube measures:

Reynolds pressure

Static pressure

Dynamic pressure

Total pressure

48. What would be the result of a single magneto failure on an aircraft in cruise flight?

The engine would be difficult to control.

The engine would backfire excessively.

A slight drop in RPM, plus a slight increase in fuel consumption.

Black smoke would be observed from the exhaust.

49. A halon fire extinguisher:

Gives off highly toxic fumes and should never be used in an enclosed cockpit

Is quite safe to use in an enclosed cockpit if the cockpit is subsequently ventilated.

Is only suitable for wood or fabric fires and is, therefore, of no use in a cockpit

Is safe to use in an enclosed cockpit.

50. Magnetos are:

Used to generate low voltage sparks for the spark-plugs.

Generators, driven by the cam-shaft, used to supply electrical equipment.

Self-contained, engine driven, electrical generators which produce high voltage sparks.

Fitted within the distributor and fire in the same sequence as the spark-plugs.

51. What causes the true airspeed of an airplane to differ from its indicated airspeed?

Yaw error caused by the yawing movement in cruise flight.

The forward wind component.

Variations in temperature and air density.

Pitot error caused by flow losses in the pitot tube.

52. Cross checking means:

The use of check list in emergency situations

Monitoring power and air speed alternately

Monitoring and interpreting two or more instrument displays in order to conclude and maintain aircraft's position

53. Why do high compression engines require fuels of a higher grade?

To avoid pre-ignition and resulting destruction of the engine.

To develop more power.

To prevent carburettor icing at high speeds.

To avoid detonation and resulting destruction of the engine.

54. Which adverse effect, caused by a gyroscopic effect, will a pilot experience during the takeoff roll while lifting a tail off the ground?

Banking tendency.

Nose up tendency.

Yawing.

Pitching.

55. The prevention of excessive oil pressure in an aircraft engine is assured by:

The engine's filter by-pass valve.

The engine's oil pressure relief valve.

Ensuring that the engine does not exceed the red-line rpm value.

The engine's high capacity pressure pump.

56. White color in air speed indicator means:

Normal flight speed range

Operating range for flaps

Operating range for landing gear

Overspeed

57. If an aircraft is equipped with a fixed-pitch propeller and a float-type carburettor, the first indication of carburettor ice would most likely be:

Engine roughness.

A drop in oil temperature and cylinder head temperature.

A rise in cylinder head temperature.

Loss of RPM.

58. What part(s) of a reciprocating aircraft engine seal(s) the combustion chamber?

The spark plugs.

The camshaft.

The cylinder rings and valves.

The cylinder gasket.

59. Semi-monocoque can be defined as:

A structure with no apertures at all.

An apertureless structure with load bearing formers being supported by stringers and longerons over a stressed skin.

A framework of light-gauge steel tubes welded together to form a space frame of triangular shape.

A stressed skin with supported apertures containing an internal structure framework.

60. One purpose of the dual ignition system on an aircraft engine is to provide for:

Balanced cylinder head pressure.

Improved engine efficiency = improved performance.

Double capacity.

Uniform heat distribution.

61. Can the alternator of an aircraft engine operate without the battery?

Yes, provided the magnetos operate properly.

Yes, provided the pilot has switched off all electrical services on board.

Yes, however at high RPM only.

No, not in any case.

62. The crankshaft in a piston engine:

Converts reciprocating movement into rotary motion.

Rotates at half the camshaft speed.

Converts rotary motion into reciprocating movement.

Controls the clearance of the valves.

63. When referring to the magnetic compass, pilots must bear in mind that:

Acceleration errors increase the nearer the aircraft is to the Magnetic Poles, and diminish as the aircraft approaches the Magnetic Equator.

Turning errors increase, the nearer the aircraft is to the Magnetic Equator, and diminish as the aircraft approaches the Magnetic Poles.

Turning errors are maximum when turning through East and West, and minimum when turning through North and South.

Turning errors are maximum when turning through North and South, and minimum when turning through East and West.

64. A propeller blade is twisted along its length in order to:

Maintain the optimal Angle of Attack from root to tip.

Give a progressively increasing pitch from root to tip.

Give a progressively increasing blade angle from root to tip.

Compensate for the decreasing linear speed of the blade from root to tip.

65. In the event of an alternator or generator failure during flight the:

Flight may be continued normally because the battery supplies all electrical loads.

Electrical loads should be reduced to a minimum and a landing made as soon as safely practicable.

Alternator master switch should be turned off and flight continued normally without electrical power.

Shut down all electrical devices and land as soon as possible.

66. The maximum speed for flaps extension:

Is equal to the maximum cruising speed.

Is equal to the maneuvering speed.

Must refer to manual.

Must refer to Certificate of Airworthiness.

67. Ignoring any Instrument or Position Errors, in what conditions will the Air Speed Indicator indicate the True Airspeed of an aircraft?

At any altitude, but only when ISA conditions prevail.

At any altitude or temperature.

In ISA, sea-level conditions only.

At any altitude, provided that the temperature lapse rate is in accordance with ISA.

68. A 100 Ampere-Hour battery:

Takes 100 hours to charge.

Must be used in parallel with another similar battery.

Will, in theory, supply 20 Amps for up to 5 hours.

Supplies the bus-bars through a 45 Ampere circuit breaker.

69. What is the purpose of an auxiliary fuel boost pump installed in some light aircraft?

Pre-injection of fuel into engine cylinders.

Increasing engine efficiency.

Providing fuel to the carburettor during start-up and supplying fuel if the engine driven fuel pump fails.

Faster emptying of fuel tanks.

70. Pre-ignition in a four stroke piston engine is:

The fuel-air mixture burning earlier than plug sparkles.

The explosive combustion of the fuel-air mixture.

Characterised by the ringing nature of the explosion it causes.

Caused by a rich mixture in a hot engine.

71. Immediately after starting an aircraft engine, you must check the starter warning light. If it is still illuminated you should:

Do nothing. The starter warning light should stay on while the engine is running.

Monitor it for 30 seconds. If it remains illuminated shut down the engine.

Shut down the engine immediately.

Shut down the engine, count to 30, and then attempt a re-start.

72. Carburettor ice has formed in the venturi of your carburettor and your aircraft starts losing power. Will the use of carburettor heat result in immediate increase in RPM?

No, in a fixed-pitch propeller aircraft there will first be some rough running and a further loss of RPM as the melted ice is ingested by the engine. Then RPM will increase.

No, since carburettor heat simply melts the ice and does not affect RPM.

Yes, since carburettor heat simply melts the ice and does not affect RPM.

Yes, since the carburettor ice will melt immediately.

73. Which is an important airspeed limitation that is not color coded on airspeed indicators on any one aircraft or glider?

Maximum structural cruising speed (VMO).

Never-exceed speed (VNE).

Maximum speed with wing flaps extended (VFE).

Maneuvering speed (VA).

74. Can an engine of a parked modern reciprocating aircraft fire if somebody turns the propeller by hand?

No, under no circumstances.

Normally not if the engine is cold with ignition switched off.

Yes, always.

Yes, provided the master switch is on or ignition is faulty.

75. Aircraft maintenance carried out by a private pilot in accordance with the pilot's legal entitlement:

Is to be entered in the aircraft's log book and certified by the pilot who carried out the maintenance.

Need not be logged or recorded.

Is to be entered in the aircraft's log book and certified by a licensed engineer.

Is to be entered in the aircraft's log book and certified by a CAD approved inspector.

76. The piston rod in a reciprocating engine forms a link between:

The valve rod and the rocker arm.

The cylinder piston and the camshaft.

The cylinder piston and the crankshaft.

The rocker arm and the valve body.

77. In icing conditions, if a static vent became blocked during level flight and the aircraft subsequently climbed, the readings on the Altimeter/the VSI/the ASI would:

Under-read / Remain unchanged / Over-read

Remain unchanged / Remain unchanged / Under-read

Over-read / Over-read / Under-read

Remain unchanged / Under-read / Over-read

78. An altimeter:

Contains an aneroid capsule connected to a static pressure source. The capsule contracts during a descent.

Contains a barometric capsule, connected to a total pressure source, that contracts during a descent.

Contains a barometric capsule that expands during a descent.

Contains a partially evacuated capsule that expands during a descent.

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

Automatic metering of air at the venturi as the aircraft gains altitude.

Increase in air pressure in the throat of a venturi causing an increase in air velocity.

Difference in air pressure at the venturi throat and the air inlet.

Increase in air velocity in the throat of a venturi causing an increase in air pressure.

80. When set to QFE pressure, an altimeter will indicate the:

Height above the airfield.

True altitude above ground surface.

Altitude above sea level.

Flight level.

81. The purpose of the compass deviation card fixed next to an aircraft's magnetic compass is to:

Indicate the discrepancy between the aircraft's track and true north.

Indicate the discrepancy between the aircraft's track and magnetic north.

Indicate the discrepancy between the heading shown on the compass and the actual magnetic heading.

Compensate for the influence of magnetic material carried on the person of the pilot and/or passengers.

82. The Mechanical Tachometer:

Is driven directly from the prop shaft. Gears reduce the speed of rotation so that a generator can be used to produce a voltage proportional to shaft speed which is indicated on a gauge calibrated in RPM.

Works on the principle of a magnetic field being induced in a drag cup and creating a torque which rotates a shaft attached to the pointer on the dial of a Tachometer.

Is driven directly from the alternator drive.

Uses the friction generated in a drag cup to rotate a shaft, which is connected to a pointer, against the pressure of a hairspring.

83. Besides the altimeter, which instruments are connected to the static pressure line?

Airspeed indicator and vertical speed indicator.

Airspeed indicator, vertical speed indicator, and turn-and-skid indicator.

Airspeed indicator and external temperature indicator.

Airspeed indicator only.

84. As an aircraft with a variable-pitch, constant-speed propeller accelerates along the runway:

The blade pitch angle increases, maintaining a constant angle of attack and R.P.M.

The linear velocity of the propeller tip will gradually decrease.

The angle of attack will remain constant and the engine R.P.M. will increase.

The angle of attack will decrease and the engine R.P.M. remain constant.

85. As air enters the restriction of a Venturi, velocity ____ , static or ambient pressure ____ and temperature ____ .

Decreases / Decreases / Increases

Decreases / Increases / Decreases

lncreases / lncreases / Increases

Increases / Decreases / Decreases

86. The exhaust gas temperature gauge:

Is an engine instrument designed to protect the engine from excessive heat.

Requires power from the D.C. bus-bar.

Does the same job as the cylinder head temperature gauge.

Can indicate whether the air-fuel mixture being drawn into the combustion chamber is too lean or too rich.

87. Directional gyroscope is set in right position in nose wheel aircrafts:

Before departure in ground when the aircraft stays still

When aircraft is trimmed to level flight on crosscountry flight

Mechanic does it during maintenance

During climb

88. Pre-ignition:

Is usually caused by a hot spot in the combustion chamber.

Occurs after ignition.

Happens after the spark occurs at the plug.

Is also known as pinking.

89. After starting a cold engine, if the oil pressure gauge does not indicate within approximately 30 seconds:

This may be ignored if the oil temperature is high, provided that the oil level was checked to be sufficient before start-up.

This may be ignored, provided that the oil level was checked to be sufficient before start- up.

The engine rpm should be increased and then the oil pressure re-checked.

The engine must be stopped immediately.

90. The significance of using the chemically correct mixture of air and fuel is that:

It gives the best results.

It is the one usually used.

It is 15:1 by volume.

It allows complete combustion to occur.

91. Which altitudes indicates an aircraft altimeter if set to standard atmospheric pressure?

Relative altitudes.

Flight levels.

True altitudes above the ground surface.

Absolute altitudes.

92. Engine compression ratio is the ratio of the:

Total volume to the clearance volume.

Swept volume to the clearance volume.

Clearance volume to the swept volume.

Swept volume to the total volume.

93. Some carburettors are fitted with a diffuser which:

Prevents the mixture becoming too lean as the rpm decreases.

Prevents the mixture becoming too lean as the rpm increases.

Prevents the mixture becoming too rich as the rpm increases.

Prevents the mixture becoming too rich as the rpm decreases.

94. What does the green color band on the airspeed indicator of an aircraft indicate?

The landing gear and flaps operating speed range.

Dangerous area.

Maximum allowed speed.

Normal operating speed range.

95. During one complete Otto Cycle, the piston:

Moves towards the cylinder head twice.

Moves towards the cylinder head four times.

Rotates around the gudgeon pin twice.

Receives two power strokes.

96. The principal reason why light training aircraft have fixed undercarriages is that:

The reduced performance caused by the additional drag of a fixed undercarriage is offset by its simplicity, low cost and easy maintenance.

Training aircraft need to ensure that kinetic energy on landing is absorbed

Training aircraft need to be supported at a convenient height.

Training aircraft need to manoeuvre on the ground.

97. Baffles:

Reduce the flow of air around the engine.

Are directional air guides which direct the airflow fully around the cylinder.

Must be close fitting to reduce the flow of air around the engine.

Are placed within the lubrication system to slow down the passage of oil into the engine.

98. How much maintenance cycle can be exceeded?

Max. 15%

Max. 20%

Max. 10%

Max. 5%

99. For internal cooling, a reciprocating aircraft engine especially depends on:

The air flowing over the exhaust manifold.

A properly functioning thermostat.

The circulation of lubricating oil.

The liquid coolant flowing over the exhaust manifold.

100. The most common method for shutting down an aircraft engine equipped with carburettor is:

Moving the mixture to Idle Cut off (ICO).

Switching the starter switch to off.

Closing the throttle.

Closing the throttle and moving the mixture to ICO.

101. The temperature of the gases within the cylinder of a four stroke engine during the power stroke will:

Decrease.

Increase.

Follow Charles's Law.

Remain constant.

102. A flying control lock:

Is used to lock the controls on the ground to prevent damage in high wind conditions.

Will constrain the control column to its design limits so as not to overstress the airframe during normal operations.

Is only necessary on the elevators.

Must always be used when flying in gusty conditions.

103. Choose the correct statement concerning the colour markings of air speed indicator:

Green = normal opertating range

Yellow = normal use

Red = stall speed in clean configuration

White = max. Speed in turbulent weather

104. When a compass swing is being carried out:

It can be carried out on any part of the airfield which is dry and flat.

It will enable the aircraft's variation to be determined.

It will enable the aircraft's true heading to be determined.

The aircraft's heading compass reading is compared with readings from a 'land or datum' compass.

105. A carburettor is used to supply:

Fuel in atmospheric pressure to the engine cylinders.

A fuel/air mixture to the engine cylinders.

Fuel to the engine cylinders.

Air to the engine cylinders.

106. The diagram shows a light aircraft electrical power system (See LAPL/PPL 020- 01). In flight if the loadmeter reading drops to zero, the most probable cause is that the:

Battery is flat.

Alternator has failed.

Bus-bar is overloaded.

Battery has been fully charged.

107. The power output of a four-stroke piston engine at sea level:

Increases as rpm increases.

Is proportional to the volume of mixture induced into the cylinder.

Is constant as rpm increases.

Increases initially, then remains constant as rpm increases.

108. Within one "Otto" cycle, the valves of a four stroke piston engine will open:

During the induction stroke.

Once.

During the power stroke.

Twice.

109. If a fire occurs in a wheel and tyre assembly and immediate action is required to extinguish it, the safest extinguishant to use is:

Water acid.

Carbon dioxide.

Bromotrifluoromethane (BTF).

Dry powder.

110. If a blockage occurs in the oil cooler of an aircraft engine while the aircraft is in flight, a by-pass valve allows the oil to by-pass the cooler. The by-pass functions on the principle of:

Hydraulic selection.

Pressure dependence.

Mechanical selection.

Temperature dependence.

111. The basic purpose of adjusting the fuel/air mixture at altitude is to:

Increase the amount of fuel in the mixture to compensate for the decrease in pressure.

Decrease the amount of fuel in the mixture in order to compensate for increased air density.

Decrease the fuel flow in order to compensate for decreased air density.

Density of the air.

112. Where in the engine is the oil temperature read by the temperature probe which is connected to the engine's oil temperature gauge?

Inside the hot sections of the engine.

As the oil leaves the oil tank.

After the oil has passed through the oil cooler but before it reaches the hot sections of the engine.

Before the oil has passed through the oil cooler.

113. Instruments normally supplied from the electrical system include the:

Engine rpm indicator and the turn co-ordinator.

Turn co-ordinator and oil pressure gauge.

Engine rpm indicator and the fuel quantity gauges.

Fuel quantity gauges and the turn co-ordinator.

114. Which instruments are usually powered by a vacuum pump system? (1) Direction Indicator (2) Turn Coordinator (3) Attitude Indicator (4) Altimeter (5) Magnetic Compass.

(1), (3) and (5).

(1), (3) and (4).

(1) and (2).

(1) and (3).

115. The distributor arm rotates at:

Engine speed.

Twice engine speed.

A half engine speed.

One quarter engine speed.

116. Density altitude is

A value that is used to measure engine's performance

A altitude display of altimeter when the altimeter has QNH settings

A altitude display of altimeter when the altimeter has QNE settings

A altitude display of altimeter when the altimeter has QFE settings

117. To which source of electrical power is the starter of an aircraft engine connected to?

To the alternator or generator.

Directly to the battery.

Depends on the type of aircraft.

To the external source of electrical power only.

118. ISA conditions at mean sea level:

Air density 1,225g/m3 and air pressure 1013,25hPa

Air pressure 1013bar and air temperature drops 6,5°C/km

Air density 1225g/m3 ja air temperature drops 6,5°C/km

Air pressure 1013mbar and air temperature drops 1,98°C/km

119. A Direction Indicator may be aligned with the magnetic compass:

By using the caging knob to rotate the Dl azimuth card when the wings are level.

To minimise the effect of magnetic dip.

Because of the effect of liquid swirl.

Periodically, to offset the affect of acceleration during a turn.

120. For exciting of the alternator an initial electrical current is needed, provided by the:

Current distributor.

Ignition coil.

Battery.

Magneto.

121. Which of the following is not a component of a dry vacuum system?

A filter to clean the air.

A vacuum controller.

A system lubrication device.

A vacuum generator.

122. If an altimeter is set to QFE pressure, the instrument indication after landing will be:

Zero.

The airfield pressure height above the standard value.

The airfield elevation.

The airfield height above the pressure plain 1013.2 hPa.

123. What is the function of a shimmy dumper on an aircraft undercarriage?

To dumpen bouncing.

To decrease shocks on direction pedals.

To prevent nose wheel vibrations.

To decrease main leg piston travel.

124. The power of an aviation engine without a supercharger decreases with altitude because of:

Lower outside temperatures it does not operate at optimum temperature.

Lower air density it receives too rich fuel/air mixture.

Higher air density it receives too poor fuel/air mixture.

Lower air density and therefore insufficient cylinder loading.

125. As the throttle is advanced, what happens to the constant-speed propeller of an aircraft?

RPM will increase.

Angle of attack will not change.

Angle of attack will increase.

Angle of attack will decrease.

126. The gyro in an artificial horizon is:

An earth gyro rotating in a vertical plane about the aircraft's lateral axis.

An earth gyro rotating in a horizontal plane about a vertical axis.

An earth gyro rotating in a vertical plane about the aircraft's longitudinal axis.

A tied gyro rotating in a horizontal plane about the aircraft's longitudinal axis.

127. The most probable cause of the needle of the oil pressure gauge fluctuating when the aircraft is in level flight with the engine running at cruise rpm is:

A loose electrical connection.

The presence of air in the oil tank.

A low oil supply

The presence of air in the oil tank.

128. The component parts of the wing shown in the diagram are: (See LAPL/PPL 020- 02) A/B/C

Front Spar/Secondary Spar/Former

Primary Spar/Formers/Stringer

Front Spar/Formers/Rear Spar

Stringers/Secondary Spar/Former

129. Most nose wheels on modern light aircraft are:

Compressed rubber struts.

Spring coil struts.

Spring steel struts.

Oleo pneumatic shock-absorber struts.

130. 1 hPa in altimeter setting is:

270ft

100ft

27ft

27m

131. The octane number of the fuel means:

Fuel's ability to tolerate frost

The heat of vaporization of the fuel

Fuel's ability to tolerate detonation

The kindling point of the fuel

132. The red line on an airspeed indicator of a sport aircraft represents:

The maximum speed for abrupt controls movement.

The speed which could be exceeded with the wing flaps raised and the landing gear retracted.

The speed which must not be exceeded any time.

The speed which could be exceeded in calm air only.

133. Which instrument(s) is(are) connected to the total pressure?

Classic vertical speed indicator and altimeter.

Classic vertical speed indicator only.

Airspeed indicator only.

Airspeed indicator, classic rate-of-climb indicator and altimeter.

134. A magnetic heading:

Is the sum of the compass heading, compass deviation and variation.

Is always referenced to True North.

Is the sum of the compass heading and compass deviation.

Is not affected by turning errors.

135. If you suspect carburettor icing when flying an aircraft whose engine is not fitted with a carburettor air-temperature gauge, the correct action would be:

To open the throttle to make up for the lost power.

To always select full carburettor heat unless the engine starts to run roughly, at which point the carburettor heat should be selected to cold.

To always select full carburettor heat.

To select the appropriate amount of carburettor heat depending on the amount of icing suspected.

136. If the gyro of a turn indicator runs at a lower RPM than its design specification, how will the actual rate of turn of the aircraft compare to the rate of turn shown on the turn indicator?

The turn indicator will not indicate a rate of turn.

The actual rate of turn of the aircraft will be greater than the rate indicated.

The actual rate of turn of the aircraft will be less than the rate indicated.

The actual rate of turn of the aircraft will be same as the rate indicated.

137. Detonation could result from using:

A higher grade fuel than recommended.

Too low a manifold pressure.

Too weak a mixture.

Too high an RPM.

138. What does the red line on an aviation instrument generally represent?

Maximal or minimal allowed value.

Dangerous area.

Normal operating range.

Landing gear operating speed range.

139. What height does the altimeter indicate if set to local QNH?

Height above terrain.

Height above sea level.

Height above airport.

Flight level.

140. When enriching the mixture:

Power is increased

Pilot does not touch on throttle lever

The amount of air becomes greater than the amount of fuel

The amount of fuel becomes greater than the amount of air

141. Annual inspection is done:

After every 12 months

After every 6 months

Together with 100 h maintenance

After every 24 months

142. On a fixed pitch propeller aircraft whose engine is fitted with a carburettor, the first signs of induction system icing are:

A gradual drop in rpm and possible rough running and vibration.

A rise in engine oil temperature and a fall in oil pressure.

A sudden drop in rpm and engine temperature.

A rise in manifold pressure and a reduction in air-speed, in level flight.

143. Tyre creep:

Can be recognised by the misalignment of markings painted on the tyre and the wheel.

Can be prevented with glue.

Refers to the movement of an aircraft against the brakes.

Can be prevented by painting lines on the tyre and wheel.

144. Flying an aircraft with a flat battery, having started the engine using a ground source, is:

Not recommended because the battery may not charge correctly during flight.

Acceptable because the battery is never required in flight.

Acceptable because the battery will be fully charged again before take-off.

Not recommended because the electrical loads will not be energised.

145. If, while an aircraft is descending, the static vent leading to the Vertical Speed Indicator becomes blocked, the indicator will:

Indicate a descent.

Continue to show the same reading.

Indicate a climb.

Show a zero reading, after a short delay.

146. The barometric pressure scale on an aircraft altimeter serves for:

Exact setting of the altimeter during the annual inspection in a service facility.

Setting of pressure value at the pressure level, from which will the altimeter measure altitudes.

Air pressure reading at flight altitude.

Pressure difference reading between the air pressure at the airport level and the air pressure at the sea level.

147. Tyre creep may be identified by:

A tyre pressure check.

Two white blocks painted on the wheel flange.

Alignment marks painted on the tyre sidewall and wheel flange.

Two yellow diametrically opposed arrows painted on the tyre sidewalls.

148. On a reciprocating aviation engine, what is controlled by the exhaust temperature gauge (EGT)?

Quality of the fuel/air mixture.

Oil pressure.

Carburettor icing.

Oil consumption.

149. Theoretically, a 100Ah battery will supply 25A for:

25 hours.

4 hours.

100 minutes.

25 minutes.

150. If a fuse blows during flight it:

May be replaced by a fuse of a higher rating to ensure that it will not blow again.

May be replaced in the air once only, by one of the same value.

Should not be replaced until after landing.

May be replaced as often as required.

151. Connecting two 12 volt, 40 ampere-hour, capacity batteries in series will provide a battery of:

12 volts and 40 ampere hours capacity.

24 volts and 80 ampere-hours capacity.

12 volts and 80 ampere-hours capacity.

24 volts and 40 ampere-hours capacity.

152. What part in a reciprocating four-stroke engine operates the piston valves?

The piston rod.

The piston bolt.

The diffuser valve.

The camshaft.

153. Aquaplaning speed:

Increases as the depth of tread on the tyres reduces.

Is measured in miles per hour.

Increases as the depth of water on the ground increases.

Can be calculated, in knots, by multiplying the square root of the tyre pressure by nine.

154. If, during descent, the static sources to the airspeed indicator and altimeter become blocked by ice:

The airspeed indicator will under-read and the altimeter will over-read.

Both instruments will over-read.

The airspeed indicator will over-read and the altimeter will under-read.

Both instruments will under-read.

155. The cylinder head temperature gauge:

Obtains its information from a probe which is installed about four inches from the cylinder head on the exhaust system.

Obtains its temperature information from the hottest engine cylinder, by means of a probe consisting of two dissimilar metals joined together.

Requires alternating current to power the instrument needle.

Is primarily a fuel management instrument.

156. As you climb altitude ____ and density ____ and, therefore, the mixture will be____.

Increases/Decreases/Decreases.

Decreases/Increases/Decreases.

Increases/Decreases/Increases.

Decreases/Decreases/Increases.

157. The purpose of fins around the cylinder of a reciprocating air-cooled aircraft engine is:

A cylinder augmentation.

Increase the cooling area and better cylinder cooling.

A lower engine aerodynamic drag.

Decrease the cooling area and lower engine mass.

158. An abnormally high oil temperature indication in case of a four-stroke engine may be caused by:

The oil level being too high.

Operating with too high viscosity oil.

The oil level being too low.

Excessively rich mixture.

159. If the engine gets too hot, the mixture may ignite before the spark plug fires.

The throttle should be opened to assist in cooling the engine.

This is called pre-ignition.

The mixture should be weakened to assist in cooling the engine.

This is called detonation.

First submitted	September 12, 2022
Times taken	437
Average score	12.6%
Report this quiz	Report