Cartes mémoires 021 Fragen (Seite 1 von 2)

Cartes-fiches	45
Langue	Deutsch
Catégorie	Technique
Niveau	Autres
Crée / Actualisé	27.05.2025 / 02.06.2025
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A variable displacement pump delivers minimum output when the stationary yoke is:

Moving to a position at maximum angle with the driving shaft.

At a right angle with the driving shaft.

Moving towards a position at a right angle with the driving shaft.

At maximum angle with the driving shaft.

Spoilers installed on a typical large transport aeroplane are:

Upper wing surface devices and their deflection can be symmetrical or asymmetrical.

Lower wing surface devices and their deflection can be symmetrical or asymmetrical.

Lower wing surface devices and their deflection is always asymmetrical.

Upper wing surface devices and their deflection is always asymmetrical.

The viscosity of a hydraulic fluid should be: The...

...lowest to minimize power consumption and resistance to flow.

...highest to minimize power consumption and resistance to flow.

...lowest to provide excellent lubrication properties.

...highest to provide excellent lubrication properties.

With regard to a jet transport aircraft generally speaking, what is an all moveable horizontal stabiliser?

The angle of the vertical tail with respect to the fuselage can be changed about a vertical axis for trimming purposes.

The angle of the stabiliser with respect to the fuselage can be changed for trimming purposes.

The angle of the stabiliser with respect to the fuselage can be changed and serves as an elevator.

The entire tail, stabiliser and vertical tail, can be moved with respect to the fuselage for trimming purposes.

Landing gear up selection on the ground on a modern large transport aircraft is prevented by means of:

Over centre links.

Weight on wheel switches.

Uplocks.

Downlocks.

Shuttle valve will automatically:

Guard systems against overpressure.

Switch hydraulically operated units to the most appropriate pressure supply.

Reduce pump loads.

Shut down systems which are overloaded.

Which component of the landing gear absorbs forces acting in lateral direction?

side strut.

shock strut.

torsion link.

drag strut.

The purpose of an accumulator in a hydraulic system is: To...

...bypass the pumps in the hydraulic system.

...eliminate the fluid flow variations.

...damp the fluid pressure variations.

...enable the starting of hydraulic devices.

Multi-disc brake unit: The heat pack consists of ...

Pressure Plate, Stators and Rotors, Pressure Ring and Actuators

Torque Tube, Stators and Rotors, Pressure Ring

Torque Tube, Stators and Rotors, Pressure Ring and Actuators

Pressure Plate, Stators and Rotors, Pressure Ring

Axial piston type pumps are often used in hydraulic systems. Why?

These pumps have the ability to produce high pressure when required (on demand).

The safety feature of the quill drive shearing due to pump seizure and the ease of repair by replacement of pump and shaft only.

Their low cost, simplicity and durability.

Their ability to produce high pressure combined with constant high flow rate.

In a hydraulic system, hydraulic fuses can be found. Their function is to ...

allow bypassing of a hydraulic pump in case it is subject to excessive pressure, without further damage to the system.

isolate a part of the system and protect it against accidental pollution.

switch to the secondary system in case of a leak in the primary brake system.

prevent total system loss in case of a leaking brake hydraulic line.

What is the purpose of trim tabs? The purpose is to...

...reduce stick holding forces to zero.

...increase control effectiveness.

...reduce stick forces in manoeuvres.

...reduce control effectiveness.

What is the working principle of leading edge flaps in connection with trailing edge flaps?

This further increases the camber of the wing.

This balances the wing aerodynamic centre.

The leading edge flap is used for take off while the trailing edge flap is used for landing.

This balances the wing centre of gravity.

What are the conditions necessary in order to parallel DC generators?

Output frequency must be different.

Voltage must be equalised.

Output frequency must be nearly the same.

Voltage must be different.

The squirrel cage rotor is used in:

Hysteresis motors.

DC motors.

Synchronous motors.

Induction motors.

A shunt wound DC generator is another way of describing a generator with a wound field winding in ...

series.

differential compound.

parallel.

compound.

The loads on an aircraft busbar are connected ... reduces through the busbar as loads are switched off.

in parallel so that the current

in series so that the voltage

in series so that the current

in parallel so that the voltage

The induction motor has:

A voltage regulator.

Slip rings and brushes.

A commutator.

No slip rings and brushes.

An air-driven generator (RAT) supplies …

an AC output with variable frequency

a constant frequency AC output.

a DC output.

An actuator motor with a high starting torque would be:

Compound wound.

Shunt wound.

Series wound.

Double wound.

In an aircraft electrical system where AC generators are not paralleled mounted, the changeover relay allows …

power supply to the faulty AC generators busbar.

connection of the Auxiliary Power Unit (APU) to its main busbar.

connection of the AC generator to its distribution busbar.

connection of the ground power truck to its distribution busbar.

When leaning the mixture for the most economic cruise fuel flow, excessive leaning will cause:

High manifold pressure.

Low cylinder head temperature and exhaust gas temperature.

High engine rpm.

High cylinder head and exhaust gas temperature.

The purpose of a contact breaker (ignition switch) is to:

Connect the contact breaker and condenser in series with the primary coil.

Connect the secondary coil to the distributor.

Control the primary circuit to the magneto.

Connect the battery to the magneto.

The main purpose of the aftercooler (turbocharged engine) is to cool the air ...

entering the turbo-charger turbine.

leaving the turbo-charger turbine.

leaving the turbo-charger compressor.

entering the turbo-charger compressor.

In modern aircraft, a pilot can actuate the feather system by:

Pushing the power lever forward.

Pulling the RPM lever backwards.

Pulling the power levers backwards.

Pushing the RPM lever forward.

Which propeller pitch angle corresponds to the feathered position?

ca. 45 degrees.

ca. 0 degrees.

ca. -10 degrees.

ca. 90 degrees.

With a fuel-air mixture ratio of ..., the highest combustion temperature is reached.

1/25

1/10

1/18

1/15

In an aircraft equipped with a float type carburettor and a constant speed propeller, carburettor icing would probably first be detected by?

Detonation.

A drop in engine RPM.

A drop in manifold pressure and engine RPM.

A drop in manifold pressure.

With which instrument(s) do you monitor the power output of an aeroplane fitted with a fixed pitch propeller?

RPM and EGT indicator.

RPM indicator and CHT indicator.

RPM and Fuel Flow indicator.

Only RPM indicator.

An aircraft magneto is switched off by:1) Grounding the primary circuit.2) Opening the primary circuit.3) Opening the secondary circuit.4) Grounding the secondary circuit.The combination that regroups all of the correct statements is:

1, 4.

2, 4.

2, 3.

1, 3.

Which systems allows greater airflow around the cylinder cooling fins during high power setting operations?

cowl flaps.

air deflection plates.

oil cooler shutters.

baffles.

What is the correct method of checking that an aircooled piston engine is operating at the correct temperature? By...

...checking the cyclinderhead gauge and adjusting the throttle.

...checking the cylinder head gauge and adjusting the cowl flaps.

...adjusting the mixture and looking for black smoke.

...adjusting the propeller RPM while checking the temp gauge.

An impulse coupling...

is used after ignition to crank the engine.

accelerates one magneto by spring force to produce a spark for ignition.

accelerates both magnetos by spring force to produce a spark for ignition.

operates all the time the engine is running and resets after the engine is stopped.

In a piston engine, turbocharger boost pressure may be monitored by:

Both engine RPM readings and a manifold pressure gauge.

A cylinder head temperature gauge (CHT), a manifold pressure gauge (MAP), and engine RPM readings.

A manifold pressure gauge only.

Both a CHT gauge and manifold pressure gauge.

Which propeller pitch angle corresponds to the feathered position?

ca. 45 degrees.

ca. 0 degrees.

ca. -10 degrees.

ca. 90 degrees.

With a fuel-air mixture ratio of ..., the highest combustion temperature is reached.

1/25

1/10

1/18

1/15

In an aircraft equipped with a float type carburettor and a constant speed propeller, carburettor icing would probably first be detected by?

Detonation.

A drop in engine RPM.

A drop in manifold pressure and engine RPM.

A drop in manifold pressure.

What is the principal advantage of using propeller reduction gears?

engine RPM to be increased with an accompanying increase in propeller RPM

propeller RPM to be decreased without an accompanying increase in engine RPM

propeller RPM to be increased without an accompanying increase in engine RPM

engine RPM to be increased to improve power and torque, while propeller RPM remains efficient and lower

Feathering a single acting constant speed propeller: Which force moves the blades to feather?

Oil pressure and solenoid valve lifting

Spring pressure

Spring pressure and oil pressure

Counterweights and oil pressure

What is stiffness?

Stiffness limits the extent of an elastic deformation in response to an application of a defined force

Stiffness is stress multiplied with strain

Stiffness is a specific strength in respect to plastic deformation

Stiffness is the stress in a structure when a bending force is applied

021 Fragen

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