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

Question 1

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 2

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 3

What happens during oil filter clocking?

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 4

Which instrument can be affected by the hysteresis error?

Accepted Answer

Altimeter

Answer

Direct reading compass

Answer

Vertical speed indicator

Answer

Tachometer

Question 5

What reduces wearout on a skid-shoe landing gear?

Accepted Answer

Hardened skid shoes

Answer

Angled landing skids

Answer

Blanked bend tubes

Answer

Flexible fittings

Question 6

A spider control...

Accepted Answer

Changes the pitch angle of the rotor blades via an internal control rod.

Answer

Feeds fuel by the rotational movement of pistons with various lengths.

Answer

Prevents the overlay of collective and periodic control inputs on the main rotor.

Answer

Changes the ignition timing of the magneto ignition during start-up.

Question 7

With increasing altitude, the power of a carburettor engine...

Accepted Answer

Decreases.

Answer

Remains constant.

Answer

Increases.

Answer

First decreases, from 5000 ft on increases.

Question 8

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 9

What is the unit for voltage?

Accepted Answer

Volt

Answer

Ohm

Answer

Watt

Answer

Ampere

Question 10

The term "inclination" is defined as...

Accepted Answer

Angle between earth's magnetic field lines and horizontal plane.

Answer

Angle between magnetic and true north.

Answer

Deviation induced by electrical fields.

Answer

Angle between airplane's longitudinal axis and true north.

Question 11

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 12

During a flight in colder-than-ISA air the indicated altitude is...

Accepted Answer

Higher than the true altitude.

Answer

Lower than the true altitude

Answer

Eqal to the true altitude.

Answer

Equal to the standard altitude.

Question 13

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 14

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 15

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 16

During a flight in an air mass with a temperature equal to ISA and the QNH set correctly, the indicated altitude is...

Accepted Answer

Equal to the true altitude.

Answer

Lower than the true altitude.

Answer

Higher than the true altitude.

Answer

Equal to the standard atmosphere.

Question 17

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 18

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

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

Question 19

Which value can the pilot derive from the tachometer?

Accepted Answer

Crankshaft or main rotor revolutions per minute

Answer

Airspeed of the helicopter

Answer

Vertical speed of the helicopter

Answer

Engine performance and rotor performance

Question 20

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 21

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

Accepted Answer

Rich

Answer

Empty

Answer

Full

Answer

Lean

Question 22

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 23

Which method of measurement is mostly used for the fuel supply indication on helicopters?

Accepted Answer

Capacitive measurement

Answer

Dipstick measurement

Answer

Flow measurement

Answer

Inductive measurement

Question 24

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 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

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 nose reduction and bearing of the propeller shaft.

Answer

Cooling of the engine and lubrication of propeller shaft.

Question 27

What is caused by the movement of the cyclic stick?

Accepted Answer

The swash plate is inclined and thus changes the pitch angle of the blades periodically

Answer

The lower scissors are twisted and consequently the pitch angle of the rotor blade is changed periodically

Answer

The sliding sleeve is axially moved and thus changes the pitch angle of the rotor blades collectively

Answer

The trim panels are inclined and consequently a torque on the rotor blade is produced

Question 28

QFE is the...

Accepted Answer

Barometric pressure at a reference datum, typically the runway threshold of an airfield.

Answer

Barometric pressure adjusted to sea level, using the international standard atmosphere (ISA).

Answer

Magnetic bearing to a station.

Answer

Altitude above the reference pressure level 1013.25 hPa.

Question 29

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 30

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 31

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 32

The airspeed indicator is unservicable. The airplane may only be operated...

Accepted Answer

When the airspeed indicator is fully functional again.

Answer

If no maintenance organisation is around.

Answer

When a GPS with speed indication is used during flight.

Answer

If only airfield patterns are flown.

Question 33

Which components do rotor blades made of synthetic material contain?

Accepted Answer

Spar of lead and synthetic material, filling material and outer skin of synthetic material, erosion protection of stainless steel

Answer

Spar of synthetic material, filling material and outer skin of synthetic material, erosion protection of aluminum

Answer

Spar of aluminum and synthetic material, filling material and outer skin and erosion protection of synthetic material

Answer

Spar of stainless steel, filling material and outer skin and erosion protection of synthetic material

Question 34

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 35

Which colour does Avgas 100 LL have?

Accepted Answer

Blue

Answer

Yellow

Answer

Green

Answer

Red

Question 36

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 37

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 inspected 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 38

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 39

The connection between the main rotor mast and the main rotor head is...

Accepted Answer

Screwed.

Answer

Welded.

Answer

Pressed.

Answer

Glued.

Question 40

Which cockpit instruments are connected to the static port?

Accepted Answer

Altimeter, vertical speed indicator, airspeed indicator

Answer

Airspeed indicator, direct-reading compass, slip indicator

Answer

Altimeter, slip indicator, navigational computer

Answer

Airspeed indicator, altimeter, direct-reading compass

Question 41

A steel or lead rotor blade spar...

Accepted Answer

Improves the autorotation characteristics by increased inertia.

Answer

Prevents high-frequency vibrations to the main rotor system.

Answer

Is necessary for the connection to the main rotor head.

Answer

Holds loads of the uniform lift distribution.

Question 42

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 43

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 44

When is it necessary to adjust the pressure in the reference scale of an alitimeter?

Accepted Answer

Before every flight and during cross country flights

Answer

After maintance has been finished

Answer

Once a month before flight operation

Answer

Every day before the first flight

Question 45

What is the most likely reason for the starter not turning when activated?

Accepted Answer

The rotor break is engaged

Answer

The magnetos are defect

Answer

The ignition is short-circuited

Answer

The alternator is defect

Question 46

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 47

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 48

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 49

The mast bearing on the upper gearbox output acts against...

Accepted Answer

Traction and bending forces.

Answer

Torsions.

Answer

Torques.

Answer

Contact pressure.

Question 50

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.

Question 51

What cylinder arrangement is common in helicopters with piston engines?

Accepted Answer

Boxer engine

Answer

Radial engine

Answer

Line engine

Answer

V-type engine

Question 52

The measurement of altitude is based on the change of the...

Accepted Answer

Static pressure.

Answer

Dynamic pressure.

Answer

Total pressure.

Answer

Differential pressure.

Question 53

The Caution Area is marked on an airspeed indicator by what color?

Accepted Answer

Yellow

Answer

White

Answer

Red

Answer

Green

Question 54

How can the belts of a belt clutch be tightened?

Accepted Answer

Increase of drive shaft distance

Answer

Approximation of two rotating plates

Answer

Increase of engine RPM

Answer

Extension of a pneumatic cylinder

Question 55

What values are usually marked with a red line on instrument displays?

Accepted Answer

Operational limits

Answer

Operational areas

Answer

Recommended areas

Answer

Caution areas

Question 56

Which of the following states the working principle of an airspeed indicator?

Accepted Answer

Total air pressure is measured and compared against static air pressure.

Answer

Dynamic air pressure is measured by the Pitot tube and converted into a speed indication by the airspeed indicator

Answer

Total air pressure is measured by the static ports and converted into a speed indication by the airspeed indicator

Answer

Static air pressure is measured and compared against a vacuum.

Question 57

The hydraulic pump of the control system is driven by the...

Accepted Answer

Main rotor gearbox.

Answer

Additional aggregate.

Answer

Engine.

Answer

Alternator.

Question 58

The highest absorbtion of humidity in fuel can be observed in which situation?

Accepted Answer

Almost empty tanks

Answer

During parking on cold aprons

Answer

Almost full tanks

Answer

During parking on wet gras areas

Question 59

What is the reason for a puddle of water below the helicopter after a flight in summer?

Accepted Answer

The air conditioning was used in flight

Answer

The windshield wiper fluid has leaked

Answer

The helicopter was frozen at cruising altitude

Answer

Vapour bubbles from the fuel lines are condensed.

Question 60

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 61

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 62

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 63

A flight level is a...

Accepted Answer

Pressure altitude.

Answer

True altitude.

Answer

Altitude above ground.

Answer

Density altitude.

Question 64

Why are all the connecting flanges of the main shaft designed flexible?

Accepted Answer

To compensate for thermal stresses and installation errors

Answer

For the distribution of pressure and tensile forces

Answer

To have a predetermined breaking point for engine damage

Answer

For the frictional connection to the main rotor gearbox

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