Test
Aircraft General Knowledge
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Preguntas del test (50)
1It's good practice, when flying over large areas of water, that life jackets:
- AAre worn, uninflated.
- BShould be carried under the pilots' seats.
- CShould be inspected periodically for leaks.
- DAre worn inflated.
2A BCF fire extinguisher:
- AIs quite safe to use in an enclosed cockpit if the cockpit is subsequently ventilated.
- BGives off highly toxic fumes and should never be used in an enclosed cockpit
- CIs quite safe to use in an enclosed cockpit.
- DIs only suitable for wood or fabric fires and is, therefore, of no use in a cockpit
3If you suspect carburettor icing when flying an aircraft whose engine is not fitted with a carburettor air-temperature gauge, the correct action would be:
- ATo always select full carburettor heat.
- BTo select the appropriate amount of carburettor heat depending on the amount of icing suspected.
- CTo always select full carburettor heat unless the engine starts to run roughly, at which point the carburettor heat should be selected to cold.
- DTo open the throttle to make up for the lost power.
4Aquaplaning speed:
- ACan be calculated, in knots, by multiplying the square root of the tyre pressure by nine.
- BIncreases as the depth of tread on the tyres reduces.
- CIncreases as the depth of water on the ground increases.
- DIs measured in miles per hour.
5Connecting two 12 volt, 40 ampere-hour, capacity batteries in series will provide a battery of:
- A24 volts and 40 ampere-hours capacity.
- B12 volts and 80 ampere-hours capacity.
- C24 volts and 80 ampere-hours capacity.
- D12 volts and 40 ampere hour’s capacity.
6If 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:
- APressure dependence.
- BTemperature dependence.
- CMechanical selection.
- DHydraulic selection.
7A propeller blade is twisted along its length in order to:
- AMaintain the optimal Angle of Attack from root to tip.
- BGive a progressively increasing blade angle from root to tip.
- CGive a progressively increasing pitch from root to tip.
- DCompensate for the decreasing linear speed of the blade from root to tip.
8Magnetos are:
- ASelf contained, engine driven, electrical generators which produce high voltage sparks.
- BGenerators, driven by the cam-shaft, used to supply electrical equipment
- CUsed to generate low voltage sparks for the spark-plugs.
- DFitted within the distributor, and fire in the same sequence as the spark-plugs.
9Which of the following is an appropriate action to take if you have a carburettor fire on start- up?
- ASelect mixture control to Idle Cut off (ICO).
- BDeselect carburettor heat.
- CTurn the starter switch to "Off".
- DAII of the above.
10Tyre creep:
- ACan be recognised by the misalignment of markings painted on the tyre and the wheel.
- BCan be prevented by painting lines on the tyre and wheel.
- CRefers to the movement of an aircraft against the brakes.
- DCan be prevented with glue.
11The diagram shows a light aircraft electrical power system.(See Fig.PPL AKG-1)
In flight if the loadmeter reading drops to zero, the most probable cause is that the:- AAlternator has failed.
- BBattery has been fully charged.
- CBattery is flat.
- DBus-bar is overloaded.
12The power output of an internal combustion engine can be increased by:
- AIncreasing the engine R.P.M.
- BDecreasing the area of the cylinder.
- CDecreasing the length of the stroke.
- DIncreasing the size of the fuel tank.
13When turning through North in the Northern Hemisphere:-
- ALiquid swirl will increase the magnitude of any turning error.
- BTurning errors are greatest closer to the magnetic equator.
- CAcceleration errors are always more significant than turning errors.
- DThe compass will be lively.
14In a dive, with the throttle setting constant, the engine R.P.M. of an aircraft fitted with a fixed- pitch propeller will:
- AIncrease if the airspeed is allowed to increase.
- BDecrease as the airspeed increases.
- CRemain constant whatever the airspeed.
- DDecrease as long as the throttle setting is not changed.
15Immediately after starting an aircraft engine, you must check the starter warning light. If it is still illuminated you should:
- AShut down the engine immediately.
- BMonitor it for 30 seconds. If it remains illuminated shut down the engine.
- CDo nothing. The starter warning light should stay on while the engine is running.
- DShut down the engine, count to 30, and then attempt a re-start.
16The significance of using the chemically correct mixture of air and fuel is that:
- AIt allows complete combustion to occur.
- BIt is the one usually used.
- CIt is 15:1 by volume.
- DIt gives the best results.
17Ignoring any Instrument or Position Errors, in what conditions will the Air Speed Indicator indicate the True Airspeed of an aircraft?
- AIn ISA, sea-level conditions only.
- BAt any altitude or temperature.
- CAt any altitude, provided that the temperature lapse rate is in accordance with ISA.
- DAt any altitude, but only when ISA conditions prevail.
18While 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?
- AAllow the engine to stop completely.
- BQuickly switch to the left magneto.
- CQuickly switch to both magnetos.
- DOpen the throttle to keep the engine running, and then select both magnetos.
19Theoretically, a 100 amp/hr battery will supply 25 amps for:
- A4 hours.
- B25 minutes.
- C100 minutes.
- D25 hours.
20During one complete Otto Cycle, the piston:
- AMoves towards the cylinder head twice.
- BRotates around the gudgeon pin twice.
- CReceives two power strokes.
- DMoves towards the cylinder head four times.
21Which of the following is not a component of a dry vacuum system?
- AA system lubrication device.
- BA vacuum generator.
- CA vacuum controller.
- DA filter to clean the air.
22While 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:
- ASelect 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.
- BSelect carburettor heat to fully hot and leave this setting selected until you have taken off and are climbing away.
- CSelect carburettor heat to fully hot: then select cold as the rpm drops.
- DAvoid the use of carburettor heat on the ground, and rely on the heat of the engine within the cowlings to melt the ice.
23The Mechanical Tachometer:
- AWorks 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.
- BUses the friction generated in a drag cup to rotate a shaft, which is connected to a pointer, against the pressure of a hairspring.
- CIs 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.
- DIs driven directly from the alternator drive.
24Detonation could result from using:
- AToo weak a mixture.
- BToo low a manifold pressure.
- CA higher grade fuel than recommended.
- DToo high an RPM.
25Pre-ignition in a four stroke piston engine is:
- AThe fuel / air mixture burning earlier than it should.
- BCaused by a rich mixture in a hot engine.
- CThe explosive combustion of the fuel-air mixture.
- DCharacterised by the ringing nature of the explosion it causes.
26If the engine gets too hot, the mixture may ignite before the spark plug fires.
- AThis is called pre-ignition.
- BThis is called detonation
- CThe mixture should be weakened to assist in cooling the engine.
- DThe throttle should be opened to assist in cooling the engine.
27Instruments normally supplied from the electrical system include the:
- AFuel quantity gauges and the turn co-ordinator.
- BEngine rpm indicator and the fuel quantity gauges.
- CTurn co-ordinator and oil pressure gauge.
- DEngine rpm indicator and the turn co-ordinator.
28Some carburettors are fitted with a diffuser which:
- APrevents the mixture becoming too rich as the rpm increases.
- BPrevents the mixture becoming too lean as the rpm increases.
- CPrevents the mixture becoming too lean as the rpm decreases.
- DPrevents the mixture becoming too rich as the rpm decreases.
29Where in the engine is the oil temperature read by the temperature probe which is connected to the engine's oil temperature gauge?
- AAfter the oil has passed through the oil cooler but before it reaches the hot sections of the engine.
- BInside the hot sections of the engine.
- CAs the oil leaves the oil tank.
- DBefore the oil has passed through the oil cooler.
3030) To assist in reducing the temperature of the engine:
- AThe air/fuel mixture can be richened.
- BThe airspeed can be reduced.
- CThe cowl flaps can be closed.
- DThe air/fuel mixture can be weakened.
31The component parts of the wing shown in the diagram are: (See Fig.PPL AKG-2)
A / B / C- AFront Spar / Formers / Rear Spar
- BPrimary Spar / Formers / Stringer
- CFront Spar / Secondary Spar / Former
- DStringers / Secondary Spar / Former
32Semi-monocoque can be defined as:
- AA stressed skin with supported apertures containing an internal structure framework.
- BA framework of light-gauge steel tubes welded together to form a space frame of triangular shape.
- CA structure with no apertures at all.
- DAn apertureless structure with load bearing formers being supported by stringers and longerons over a stressed skin.
33On a light aircraft fitted with a mechanically steered nose wheel, steering on the ground is normally effected by:
- AControl rods/cables operated by the rudder pedals.
- BCables operated from the aileron control wheel.
- CUse of the differential braking technique, only.
- DHydraulic jacks which allow self-centring.
34Engine compression ratio is the ratio of the:
- ATotal volume to the clearance volume.
- BClearance volume to the swept volume.
- CSwept volume to the total volume.
- DSwept volume to the clearance volume.
35A 100 Ampere-Hour battery:
- AWill, in theory, supply 20 Amps for up to 5 hours.
- BMust be used in parallel with another similar battery.
- CSupplies the bus-bars through a 45 Ampere circuit breaker.
- DTakes 100 hours to charge.
36In the event of an alternator or generator failure during flight the:
- AElectrical loads should be reduced to a minimum and a landing made as soon as safely practicable.
- BFlight may be continued normally because the battery supplies all electrical loads.
- CAlternator master switch should be turned off and flight continued normally without electrical power.
37If, during descent, the static sources to the airspeed indicator and altimeter become blocked by ice:
- ABoth instruments will over-read.
- BThe airspeed indicator will over-read and the altimeter will under-read.
- CThe airspeed indicator will under-read and the altimeter will over-read.
- DBoth instruments will under-read.
38Within one "Otto" cycle, the valves of a four stroke piston engine will each open:
- AOnce.
- BTwice.
- CDuring the power stroke.
- DDuring the induction stroke.
39The purpose of the compass deviation card fixed next to an aircraft's magnetic compass is to:
- AIndicate the discrepancy between the heading shown on the compass and the actual magnetic heading.
- BCompensate for the influence of magnetic material carried on the person of the pilot and/or passengers.
- CIndicate the discrepancy between the aircraft's track and magnetic north.
- DIndicate the discrepancy between the aircraft's track and true north.
40The normal method for shutting down an aircraft engine is:
- AClosing the throttle and moving the mixture to ICO.
- BSwitching the starter switch to off.
- CMoving the mixture to Idle Cut off (ICO).
- DClosing the throttle.
41Why do aircraft engine ignition systems incorporate a means of spark augmentation?
- ABecause 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.
- BBecause, at high engine speeds, a fat spark is needed to extract maximum power from the air-fuel mixture.
- CIn order to overcome the problem of spark-retard during starting.
- DAII of the above.
42Aircraft maintenance carried out by a private pilot in accordance with the pilot's legal entitlement:
- AIs to be entered in the aircraft's log book and certified by the pilot who carried out the maintenance.
- BIs to be entered in the aircraft's log book and certified by a licensed engineer.
- CNeed not be logged or recorded.
- DIs to be entered in the aircraft's log book and certified by a CAD approved inspector.
43Carbon monoxide gas, which is highly toxic, may enter the aeroplane cabin in flight because of an exhaust system defect. Carbon Monoxide:
- AIs odourless and colourless.
- BMay be identified by its strong smell.
- CMay be identified by its grey colour.
- DHas a very distinctive taste.
44Blade angle _____ from the hub to the tip of a propeller blade in order to maintain an optimal _____ from hub to tip.
- ADecreases / Angle of Attack.
- BIncreases / Angle of Attack.
- CDecreases / Geometric Pitch.
- DIncreases / Effective Pitch.
45A Direction Indicator:
- ASuffers from apparent drift of the gyro from the fixed position in space to which it was aligned, produced by Earth rotation.
- BIs badly affected by acceleration in a turn.
- CIs not affected by drift produced from mechanical friction in the gyro gimbal bearings.
- DProvides a stable reference in azimuth and elevation for maintaining accurate headings and pitch attitudes.
46As you climb altitude _____ and density _____ and, therefore, the mixture will be _____
- AIncreases / Decreases / Decreases
- BIncreases / Decreases / Increases
- CDecreases / Increases / Decreases
- DIncreases / Increases / Decreases
47The power output of a four-stroke piston engine at sea level:
- AIncreases as rpm increases.
- BIs proportional to the volume of mixture induced into the cylinder.
- CIs constant as rpm increases.
- DIncreases initially, then remains constant as rpm increases.
48As an aircraft with a variable-pitch, constant-speed propeller accelerates along the runway:
- AThe blade pitch angle increases, maintaining a constant angle of attack and R.P.M.
- BThe angle of attack will decrease and the engine R.P.M. remain constant.
- CThe angle of attack will remain constant and the engine R.P.M. will increase.
- DThe linear velocity of the propeller tip will gradually decrease.
49The diagram shows a light aircraft electrical power system, which employs a centre-zero reading ammeter. (See Fig.PPL AKG-3)
In flight with the battery fully charged and the battery switch ON, you would expect the ammeter to be:- AIn the centre-zero position.
- BTo the right showing a large positive reading.
- CTo the left showing a negative reading.
- DFluctuating, but mainly showing a negative reading.
50A flying control lock:
- AIs used to lock the controls on the ground to prevent damage in high wind conditions.
- BWill constrain the control column to its design limits so as not to overstress the airframe during normal operations.
- CMust always be used when flying in gusty conditions.
- DIs only necessary on the elevators.
Información
- Descripción
- 1 (Aircraft General Knowledge) Aviation Test sobre Aircraft General Knowledge, creado por Duško Babić el 15/01/2017.
- Autor
- Duško Babić
- Idioma
- English
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