Airbus A320 - Pneumatic System

The pressure regulating and shutoff valve will close if ___ pressure is _ or ___ airflow occurs.

Downstream / High / reverse.

Upstream / low / reverse.

Downstream / low / reverse.

Correct! Wrong!

The APU BLEED pb-sw controls the APU bleed valve. When the flight crew selects ON with the pushbutton, APU bleed air supplies the pneumatic system, if the APU speed is _____. This opens the crossbleed valve and closes the engine bleed automatically.

Normal (above 90% RPM).

Above 98% but less than 100%.

Above 95 %.

Correct! Wrong!

When engine and wing anti-ice are in use, and a BMC detects a bleed leak:

The wing anti-ice on the associated side will be lost, and the engine anti-ice on the associated side will continue to function.

Only the engine anti-ice on the associated side will be lost.

The wing and engine anti-ice on the associated side will be lost.

Correct! Wrong!

The AUTO position of the X BLEED selector opens the crossbleed if:

When engine start is selected.

The APU bleed valve is open.

An engine bleed valve is open.

Correct! Wrong!

Temperature regulation is achieved by the precooler which regulates and limits the temperature at:

90 deg.C.

150 deg.C.

200 deg.C.

175 deg.C.

Correct! Wrong!

Temperature regulation is controlled by:

Two pack controllers and the BMCs (Bleed Monitoring Computers)

The two BMCs.

One zone controller and two pack controllers.

Correct! Wrong!

In normal operation which bleed air source has priority?

RAM Air.

Engine Bleed.

Ground Air.

APU.

Correct! Wrong!

During Normal operation, when would the HP valve open?

At low thrust settings.

When IP pressure is insufficient for the demand.

With pilot intervention on the overhead panel.

At TOGA power.

Correct! Wrong!

The overheat detection system uses a single loop for:

The pylons and APU.

The wings and fuselage.

The wings and pylons.

Correct! Wrong!

If a Bleed Monitoring Computer (BMC) fails:

The associated bleed valves close.

All systems associated with the failed BMC also fail.

The remaining BMC will automatically assume most of the failed BMC’s functions.

Correct! Wrong!

The crossbleed valve has three electric motors: one for the automatic mode, one for the manual mode and one for the degraded mode.

True.

False.

Correct! Wrong!

The crossbleed valve has two electric motors: one for the automatic mode and one for the manual mode.

Each bleed valve is electrically operated and controlled by its associated BMC (Bleed Monitoring Computer).

False.

True.

Correct! Wrong!

Each bleed valve is pneumatically operated and controlled electrically by its associated BMC.

BMC2 takes over all monitoring functions if BMC1 fails except for:

Overheat detection.

Overpressure detection.

APU and Engine 1 leak detection.

Correct! Wrong!

If bleed air is being supplied by the APU or if one pack fails, pack flow will go to _____ rate.

Low.

Medium.

High.

Correct! Wrong!

Engine bleed air temperature is controlled by:

A pre-cooler that uses fan air.

Conditioned air from the mixing unit.

Conditioned air from the Bleed Monitoring Computers (BMC1 and BMC2).

Correct! Wrong!

In flight if the air pressure is insufficient even with the HP valve open:

The engine spools up automatically.

Engine power has to be increased by the pilot.

Push the High Pressure pb on the overhead panel.

Correct! Wrong!

Should both channels fail in a zone controller:

Temperature optimization and the backup mode are lost.

Temperature optimization is still available for that zone from another controller.

The pack is not affected.

Correct! Wrong!

If APU Bleed is ON and the crossbleed valve is shut, the Engine bleed valve 2 remains open.

False.

True.

Correct! Wrong!

Bleed air normally comes from the _____ of the engine.

High pressure stage.

Low pressure stage.

Intermediate stage.

Correct! Wrong!

Air bleed from the engines is:

Not cooled prior to being used by the systems.

Only cooled in air conditioning part.

Cooled in a heat exchanger by cooling air bleed from the Fan section.

Correct! Wrong!

With the loss of pneumatic system pressure, the engine bleed valve will:

Assume the open position.

Assume the closed position.

Remain in its current position.

Correct! Wrong!

In automatic mode, the crossbleed valve opens when the system is using APU bleed air.

It closes if the system detects an air leak (except in flight).

It closes if the system detects an air leak (except during engine start).

It closes automatically if the system detects an air leak.

Correct! Wrong!

If BMC1 (Bleed Monitoring Computer) fails BMC2 takes over all monitoring functions except:

Overheat detection.

Engine 1 and APU leak detection.

Automatic cross-bleed valve control.

Correct! Wrong!

Air is normally bled from the intermediate pressure stage (IP) of engine’s high-pressure (HP) compressor to minimize fuel penalty.

True.

False.

Correct! Wrong!

A leak detection system detects any overheating in the vicinity of hot air ducts.

False.

True.

Correct! Wrong!

For what condition will the APU BLEED FAULT light illuminate amber?

APU overheat or bleed leak.

APU bleed leak.

APU overheat.

Correct! Wrong!

An ECAM caution will also appear.

The pneumatic system supplies high-pressure air for air conditioning, engine starting, wing anti-icing, water pressurization and hydraulic reservoir pressurization.

False.

True.

Correct! Wrong!

When selected ON, the APU bleed air will:

Supply bleed air if the ENG BLEED pbs are selected OFF.

Have priority over engine bleed air.

Supply bleed air only if the X BLEED selector is selected OPEN.

Correct! Wrong!

Recirculation fans in the air conditioning system direct filtered cabin air to which area?

The pneumatic duct that is upstream of the packs.

The avionics compartment.

The Mixing unit.

Correct! Wrong!

The lavatory/galley extract fan operates:

Only on the ground.

Only in flight.

Continuously when electrical power is available.

Correct! Wrong!

A check valve near the crossbleed duct protects the APU, when bleed air comes from another source.

False.

True.

Correct! Wrong!

What happens when pressure and temperature are not sufficient to supply the corresponding engine bleed valve?

HP valve opens, IP stage remains in the same configuration.

HP valve closes, IP stage remains in the same configuration.

HP valve closes.

Correct! Wrong!

Engine Bleed Indications – The Precooler outlet temperature is normally in green. It becomes amber, if:

The BMC detects an overheat or low pressure.

The BMC detects an overheat.

The BMC detects an overheat or low temperature.

Correct! Wrong!

Airbus A320 – Pneumatic

Quiz

Airbus A320 - Pneumatic System

The pressure regulating and shutoff valve will close if _____ pressure is _____ or _____ airflow occurs.

The APU BLEED pb-sw controls the APU bleed valve. When the flight crew selects ON with the pushbutton, APU bleed air supplies the pneumatic system, if the APU speed is _____. This opens the crossbleed valve and closes the engine bleed automatically.

When engine and wing anti-ice are in use, and a BMC detects a bleed leak:

The AUTO position of the X BLEED selector opens the crossbleed if:

Temperature regulation is achieved by the precooler which regulates and limits the temperature at:

Temperature regulation is controlled by:

In normal operation which bleed air source has priority?

During Normal operation, when would the HP valve open?

The overheat detection system uses a single loop for:

If a Bleed Monitoring Computer (BMC) fails:

The crossbleed valve has three electric motors: one for the automatic mode, one for the manual mode and one for the degraded mode.

Each bleed valve is electrically operated and controlled by its associated BMC (Bleed Monitoring Computer).

BMC2 takes over all monitoring functions if BMC1 fails except for:

If bleed air is being supplied by the APU or if one pack fails, pack flow will go to _____ rate.

Engine bleed air temperature is controlled by:

In flight if the air pressure is insufficient even with the HP valve open:

Should both channels fail in a zone controller:

If APU Bleed is ON and the crossbleed valve is shut, the Engine bleed valve 2 remains open.

Bleed air normally comes from the _____ of the engine.

Air bleed from the engines is:

With the loss of pneumatic system pressure, the engine bleed valve will:

In automatic mode, the crossbleed valve opens when the system is using APU bleed air.

If BMC1 (Bleed Monitoring Computer) fails BMC2 takes over all monitoring functions except:

Air is normally bled from the intermediate pressure stage (IP) of engine’s high-pressure (HP) compressor to minimize fuel penalty.

A leak detection system detects any overheating in the vicinity of hot air ducts.

For what condition will the APU BLEED FAULT light illuminate amber?

The pneumatic system supplies high-pressure air for air conditioning, engine starting, wing anti-icing, water pressurization and hydraulic reservoir pressurization.

When selected ON, the APU bleed air will:

Recirculation fans in the air conditioning system direct filtered cabin air to which area?

The lavatory/galley extract fan operates:

A check valve near the crossbleed duct protects the APU, when bleed air comes from another source.

What happens when pressure and temperature are not sufficient to supply the corresponding engine bleed valve?

Engine Bleed Indications – The Precooler outlet temperature is normally in green. It becomes amber, if:

The pressure regulating and shutoff valve will close if ___ pressure is _ or ___ airflow occurs.