Exam quiz Aircraft General Knowledge - PPL(H) - Private Pilot License

Question 1

In which phase of flight must the carburettor heating be switched off although carburettor icing might be expected?

Accepted Answer

During take-off

Answer

During cruise

Answer

During taxi

Answer

During climb

Question 2

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 360° to a heading of 270°. At approximately which indication of the magnetic compass should the turn be terminated?

Accepted Answer

270°

Answer

360°

Answer

300°

Answer

240°

Question 3

What is the advantage of a gyrodyne compared to a helicopter?

Accepted Answer

High airspeed in cruise

Answer

Large centre of gravity limits

Answer

No gearbox is necessary

Answer

Low fuel consumption

Question 4

Which of the following options states the working principle of a vertical speed indicator?

Accepted Answer

Measuring the present static air pressure and comparing it to the static air pressure inside a reservoir

Answer

Total air pressure is measured and compared to static pressure

Answer

Measuring the vertical acceleration through the displacement of a gimbal-mounted mass

Answer

Static air pressure is measured and compared against a vacuum

Question 5

Which rotor blade material enables the construction of hingeless rotor heads?

Accepted Answer

Plastic

Answer

Aluminium

Answer

Titan

Answer

Timber

Question 6

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 030° to a heading of 180°. At approximately which indicated magnetic heading should the turn be terminated?

Accepted Answer

210°.

Answer

150°.

Answer

360°.

Answer

180°.

Question 7

Which light colour advises the pilot to the condition "corrective action may be required in the future"?

Accepted Answer

Amber (orange)

Answer

Green

Answer

Red

Answer

Blue

Question 8

At higher altitudes, true airspeed (TAS) tends to be higher than calibrated airspeed (CAS). A rough estimate of the TAS can be obtained by...

Accepted Answer

Adding 2 % of the CAS for every 1000 ft altitude.

Answer

Subtracting 2 % of the CAS for every 1000 ft altitude.

Answer

Subtracting 10 % of the CAS for every 1000 m altitude.

Answer

Adding 10 % of the CAS for every 1000 ft altitude.

Question 9

What is likely to be the cause if the engine runs unusually rough while checking the magnetos?

Accepted Answer

Sparking plug is defective

Answer

Short circuit on the ground cable

Answer

Ignition switch is faulty

Answer

Starter is faulty

Question 10

A horizontal situation indicator (HSI) combines the information provided by...

Accepted Answer

The directional gyro and the VHF navigation receiver.

Answer

The attitude indicator and the flight director.

Answer

The rate gyro and the slip indicator.

Answer

The directional gyro and the flight director.

Question 11

The load factor "n" describes the relationship between...

Accepted Answer

Lift and weight.

Answer

Drag and lift.

Answer

Thrust and drag.

Answer

Weight and thrust.

Question 12

What difference in altitude is shown by an altimeter, if the reference pressure scale setting is changed from 1000 hPa to 1010 hPa?

Accepted Answer

80 m more than before

Answer

Values depending on QNH

Answer

Zero

Answer

80 m less than before

Question 13

An aircraft in the northern hemisphere intends to turn on the shortest way from a heading of 270° to a heading of 360°. At approximately which indication of the magnetic compass should the turn be terminated?

Accepted Answer

330°

Answer

030°

Answer

270°

Answer

360°

Question 14

Which pressure is sensed by the Pitot tube?

Accepted Answer

Total air pressure

Answer

Dynamic air pressure

Answer

Cabin air pressure

Answer

Static air pressure

Question 15

What has to be considered during refueling?

Accepted Answer

No open fires, obey smoking ban and apply ground cables

Answer

Apply ground wires, turn on the main switch and magneto ignition

Answer

Check the fuel content of the tank with a torch and remove fire protection

Answer

Refuel through a soaked rag and keep a fire extinguisher available

Question 16

What must be considered if the alternator fails in a helicopter?

Accepted Answer

No change as long as the battery provides enough power

Answer

The engine runs roughly and is prone to knocking

Answer

Only high power consumers will fail

Answer

All instruments and warning systems will fail

Question 17

When using direct current, electrically driven flight instruments are marked with...

Accepted Answer

"DC".

Answer

"AL".

Answer

"CO".

Answer

"EL".

Question 18

A flight level is a...

Accepted Answer

Pressure altitude.

Answer

True altitude.

Answer

Altitude above ground.

Answer

Density altitude.

Question 19

What behaviour is shown by a rotating gyro in space?

Accepted Answer

It tends to maintain its position in space

Answer

It moves in accordance with the body surrounding it

Answer

It swings from east to west like a pendulum

Answer

It moves in circles with a stadily decreasing radius

Question 20

Which are the advantages of sandwich structures?

Accepted Answer

Low weight, high stiffness, high stability, and high strength

Answer

Good formability and high temperature durability

Answer

High temperature durability and low weight

Answer

High strength and good formability

Question 21

Which actions shall be taken if the engine oil pressure continuously drops to zero?

Accepted Answer

Land immediately on suitable terrain and be prepared for an autorotation

Answer

Check the mixture lever and enrich the mixture

Answer

Reduce engine performance and continue the flight to the destination

Answer

Monitor oil temperature and land at the nearest airfield

Question 22

What is the meaning of the red range on the airspeed indicator?

Accepted Answer

Speed which must not be exceeded regardless of circumstances

Answer

Speed which must not be exceeded within bumpy air

Answer

Speed which must not be exceeded with flaps extended

Answer

Speed which must not be exceeded in turns with more than 45° bank

Question 23

What needs to be considered if permissible limitations were exceeded?

Accepted Answer

The helicopter must be inspected by a qualified engineer before the next flight

Answer

The helicopter must be subjected to a duplicate inspection by two engineers

Answer

The helicopter must be inspected by the pilot in command and if no defect is found, no appropriate entry in the aircraft technical log is necessary

Answer

The helicopter must be inspected by at least two pilots licensed on the type, one of whom must be the pilot in command

Question 24

Cylinder head temperature indication relates to...

Accepted Answer

The critical cylinder.

Answer

The average of all cylinders.

Answer

All Cylinders.

Answer

A random cylinder.

Question 25

A turn and bank (or turn and slip) coordinator provides information regarding...

Accepted Answer

The rate of turn and coordination, i.e. slip or skid, of the turn.

Answer

The rate of turn and bank angle of the aircraft.

Answer

The coordination of the turn and slip angle.

Answer

The pitch and bank angle of the aircraft.

Question 26

With increasing altitude and unchanged mixture setting, the air/fuel mixture...

Accepted Answer

Becomes richer.

Answer

Becomes more lean.

Answer

Stays constant.

Answer

Becomes liquid.

Question 27

The sandwich structure consists of two...

Accepted Answer

Thin layers and a light core material.

Answer

Thick layers and a light core material.

Answer

Thin layers and a heavy core material.

Answer

Thick layers and a heavy core material.

Question 28

What is a cause for the dip error on the direct-reading compass?

Accepted Answer

Inclination of earth's magnetic field lines

Answer

Temperature variations

Answer

Deviation in the cockpit

Answer

Acceleration of the airplane

Question 29

The trim is used to...

Accepted Answer

Adapt the control force.

Answer

Lock control elements.

Answer

Move the centre of gravity.

Answer

Increase adverse yaw.

Question 30

A gyro which is rotating in space responds to forces being applied to it by an evasive movement...

Accepted Answer

At an angle of 90° to the force being applied.

Answer

At an angle of 45° to the force being applied.

Answer

In a northern direction.

Answer

At an angle of 180° to the force being applied.

Question 31

What does the slip indicator show?

Accepted Answer

Apparent vertical

Answer

Airplane's bank

Answer

Vertical to horizon

Answer

Rate of turn

Question 32

Which of the instruments listed below obtain their readings through pressure measurement?

Accepted Answer

Oil pressure gauge, fuel pressure gauge, manifold pressure gauge, altimeter, vertical speed indicator, airspeed indicator, suction gauge

Answer

Oil pressure gauge, fuel pressure gauge, fuel quantity gauge, manifold pressure gauge, differential pressure gauge, altimeter

Answer

Airspeed indicator, vertical speed indicator, altimeter, directional gyro, turn and bank coordinator, oil pressure gauge, fuel pressure gauge

Answer

Airspeed indicator, vertical speed indicator, altimeter, magnetic compass, oil pressure gauge, fuel pressure gauge

Question 33

The droop stop...

Accepted Answer

Reduces the risk of rotor blade contact with the tail boom at low rotor RPM.

Answer

Limits blade flapping and prevents rotor blade stall.

Answer

Decreases the bending and tensional loads on the rotor blades in all flight conditions.

Answer

Allows the rotor blades to flap upwards without restrictions.

Question 34

How can the pitch angle on a helicopter's rotor blade be controlled?

Accepted Answer

By control rods

Answer

By electrical impulses

Answer

By electric motors

Answer

By cam rods

Question 35

Which components do rotor blades made of metal contain?

Accepted Answer

Spar of steel, filling material of aluminum, and outer skin of aluminum

Answer

Spar of titan, filling material of stainless steel, and outer skin of steel

Answer

Spar of lead, filling material of steel, and outer skin of stainless steel

Answer

Spar of aluminum, filling material of titan, and outer skin of aluminum

Question 36

The compass error caused by the aircraft's magnetic field is called...

Accepted Answer

Deviation.

Answer

Declination.

Answer

Inclination.

Answer

Variation.

Question 37

The primer is...

Accepted Answer

An auxiliary pump in the fuel system to facilitate engine starting.

Answer

A nozzle in the Venturi tube of a carburettor for atomising the fuel.

Answer

A mechanical switch in the cockpit to engage the turbocharger.

Answer

A valve in the fuel control system for automatic mixture regulation.

Question 38

Fuel quantity in small aircraft is most commonly measured through a level sensor. The European Certification Specifications CS 23 require that...

Accepted Answer

A fuel quantity indicator must be available for each tank and the indicator must be calibrated to read "zero" during level flight when the quantity of fuel remaining in the tank is equal to the unusable fuel supply.

Answer

At least one fuel quantity indicator must be available to indicate the total amount of fuel abord an aircraft. This Indicator must be calibrated adequately to indicate the correct amount of fuel during all phases of flight.

Answer

If the fuel indicator fails, the pilot must land at the next available airport.

Answer

If no fuel quantity indicator is available to the pilot in flight, the pilot must check the fuel quantity before commencing the flight and recalculate the remaining fuel on board in regular intervals during the flight.

Question 39

The Pitot / static system is required to...

Accepted Answer

Measure total and static air pressure.

Answer

Prevent icing of the Pitot tube.

Answer

Correct the reading of the airspeed indicator to zero when the aircraft is static on the ground.

Answer

Prevent potential static buildup on the aircraft.

Question 40

Which of the mentioned cockpit instruments is connected to the pitot tube?

Accepted Answer

Airspeed indicator

Answer

Vertical speed indicator

Answer

Altimeter

Answer

Direct-reading compass

Question 41

The bank angle of a 2-minutes circle depends on the...

Accepted Answer

TAS.

Answer

CAS.

Answer

IAS.

Answer

Ground speed.

Question 42

What kind of hydraulic oil is used in aeroplane systems today?

Accepted Answer

Synthetic oil

Answer

Bio-oil

Answer

Mineral oil

Answer

Vegetable oil

Question 43

A true altitude is...

Accepted Answer

An altitude above mean sea level corrected for non-standard temperature.

Answer

A pressure altitude corrected for non-standard temperature.

Answer

A height above ground level corrected for non-standard temperature.

Answer

A height above ground level corrected for non-standard pressure.

Question 44

Which actions shall be taken if the rotor RPM indicator fails during cruise flight?

Accepted Answer

Continue the flight as long as the engine RPM indicator works

Answer

Try to get back an indication by opening and closing the throttle

Answer

Increase engine power and continue the flight to the nearest airfield

Answer

Perform an emergency landing on suitable terrain

Question 45

The slip indicator's ball (apparent vertical) has moved to the right during a right turn. By what actions may the ball led back to middle position?

Accepted Answer

Reduce bank, increase rate of turn

Answer

Reduce speed, increase bank

Answer

Reduce rate of turn, reduce bank

Answer

Increase bank, increase rate of turn

Question 46

Calibrated airspeed (CAS) equals...

Accepted Answer

Indicated airspeed (IAS) corrected for instrument and position error.

Answer

Ground speed (GS) corrected for instrument and position error.

Answer

True airspeed (TAS) corrected for wind.

Answer

Equivalent airspeed (EAS) corrected for altitude.

Question 47

An aircraft cruises on a heading of 180° with a true airspeed of 100 kt. The wind comes from 180° with 30 kt. Neglecting instrument and position errors, which will be the approximate reading of the airspeed indicator?

Accepted Answer

100 kt

Answer

70 kt

Answer

30 kt

Answer

130 kt

Question 48

How do you call fuel mixtures with a high amount of fuel?

Accepted Answer

Rich

Answer

Empty

Answer

Full

Answer

Lean

Question 49

What is the task of cooling fins on air-cooled engine cylinders?

Accepted Answer

Quick heat transfer to the surrounding air flow by expanding the surface

Answer

Leading the airflow to parts designated to be cooled

Answer

Cooling of the cylinder surrounding airflow and forwarding to hotter engine parts

Answer

Increasing the airflow thus improving cooling of cylinder parts

Question 50

Piston engines of helicopters have...

Accepted Answer

Two independent ignition systems.

Answer

One magneto ignition system.

Answer

Two coupled ignition systems.

Answer

One electrical ignition system.

Question 51

In which outside air temperature is icing most likely?

Accepted Answer

Between -5° C and +20° C

Answer

Between -15° C and 0° C

Answer

Between -20° C and +5° C

Answer

Between -10° C and +10° C

Question 52

During hover flight (HOGE - out of ground effect) with maximum power, how does the pilot compensate for a loss of power resulting from the use of carburettor heat?

Accepted Answer

Adjust the height in a hover

Answer

Enrich the mixture

Answer

Open the vents

Answer

Turn on the electrical fuel pump

Question 53

What is the advantage of a pushing tail rotor over a pulling tail rotor?

Accepted Answer

Less thrust loss by free outflow of the accelerated air mass

Answer

Gain of thrust by Coanda and Magnus effect due to the airflow around the tail boom

Answer

Effective airflow of tail rotor blades by using the downwash

Answer

Self-compensating anti-torque operation by using the downwash

Question 54

Which of the stated materials shows the highest strength?

Accepted Answer

Carbon fiber re-inforced plastic

Answer

Aluminium

Answer

Magnesium

Answer

Wood

Question 55

Where does the condensation water converge in the tank?

Accepted Answer

At the lowest position

Answer

It floats on the fuel

Answer

Near the cap of the tank

Answer

It is mixed with the fuel

Question 56

What is the purpose of engine oil in piston engine?

Accepted Answer

Cooling, lubrication of the engine and disposal of fine abrasion.

Answer

Cooling, lubrication and increasing engine performance.

Answer

For noise reduction and bearing of the propeller shaft.

Answer

Cooling of the engine and lubrication of propeller shaft.

Question 57

Which components do rotor blades made of wood contain?

Accepted Answer

Spar of metal, filling material of wood and erosion protection of metal

Answer

Spar of wood, filling material of plastic, and outer skin of wood

Answer

Spar of wood, filling material of wood, and outer skin of plastic

Answer

Spar of metal, filling material of metal, and erosion protection of wood

Question 58

What might be the reason for scratches on the tail stringer?

Accepted Answer

Contact with ground

Answer

Old colour

Answer

Intense erosion

Answer

Rotor blade contact

Question 59

What happens during oil filter clogging?

Accepted Answer

A bypass valve opens thus enabling the circulation to continue, debris will not be filtered

Answer

The oil circulation will end after 30 minutes so that a proper engine run will not be guaranteed

Answer

A bypass valve opens thus enabling the circulation to continue, debris will be filtered by an alternate filter

Answer

The oil circulation will end after 15 minutes so that a proper engine run will not be guaranteed

Question 60

What allows the removal of drag hinges in semi-rigid rotor systems?

Accepted Answer

Rotor blade attachment below the central flapping hinge

Answer

Use of a gimbal ring with central flapping hinge

Answer

Geometric or aerodynamic twist of the rotor blades

Answer

Additional cone hinges on the rotor head

Question 61

Which gauges involve a measurement of temperature?

Accepted Answer

Engine lubricant, engine cooling fluid, cylinder head, exhaust gas, outside air, cabin air

Answer

Engine lubricant, exhaust gas, outside air, cabin air, directional gyro

Answer

Engine lubricant, cylinder head, exhaust gas, suction, outside air, cabin air

Answer

Engine oil, cylinder head, exhaust gas, altimeter, airspeed indicator, vertical speed indicator

Question 62

Which of the following factors could cause an erroneous airspeed indication?

Accepted Answer

The aircraft is covered with adhesive foils

Answer

The boost pressure line is defective

Answer

A circuit breaker was pulled

Answer

The earth wire is still attached

Question 63

Which colour does Avgas 100 LL have?

Accepted Answer

Blue

Answer

Yellow

Answer

Green

Answer

Red

Question 64

The rotor brake should be engaged (provided that no other procedure is described in the flight manual)...

Accepted Answer

For outside parking.

Answer

During all prescribed pre-flight checks on the ground.

Answer

For inside parking.

Answer

During start-up until reaching the prescribed rotor rpm.

Exam simulation Aircraft General Knowledge PPL(H) - Private Pilot License

Exam simulation PPL(H) EN Aircraft General Knowledge 120 questions on 120 minutes