Airbus A320 - Pneumatic System

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

APU overheat or bleed leak.

APU overheat.

APU bleed leak.

Correct! Wrong!

An ECAM caution will also appear.

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

High.

Low.

Medium.

Correct! Wrong!

The lavatory/galley extract fan operates:

Continuously when electrical power is available.

Only in flight.

Only on the ground.

Correct! Wrong!

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

Remain in its current position.

Assume the closed position.

Assume the open position.

Correct! Wrong!

Should both channels fail in a zone controller:

Temperature optimization and the backup mode are lost.

The pack is not affected.

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

Correct! Wrong!

During Normal operation, when would the HP valve open?

At TOGA power.

At low thrust settings.

With pilot intervention on the overhead panel.

When IP pressure is insufficient for the demand.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

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

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!

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

It closes automatically if the system detects an air leak.

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

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

Correct! Wrong!

Temperature regulation is controlled by:

The two BMCs.

One zone controller and two pack controllers.

Two pack controllers and the BMCs (Bleed Monitoring Computers)

Correct! Wrong!

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

Upstream / low / reverse.

Downstream / low / reverse.

Downstream / High / reverse.

Correct! Wrong!

In normal operation which bleed air source has priority?

Engine Bleed.

Ground Air.

APU.

RAM Air.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

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

The avionics compartment.

The pneumatic duct that is upstream of the packs.

The Mixing unit.

Correct! Wrong!

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

Engine 1 and APU leak detection.

Overheat detection.

Automatic cross-bleed valve control.

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.

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

The BMC detects an overheat.

The BMC detects an overheat or low pressure.

The BMC detects an overheat or low temperature.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

If a Bleed Monitoring Computer (BMC) fails:

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

All systems associated with the failed BMC also fail.

The associated bleed valves close.

Correct! Wrong!

Bleed air normally comes from the _____ of the engine.

Low pressure stage.

Intermediate stage.

High pressure stage.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

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

90 deg.C.

200 deg.C.

150 deg.C.

175 deg.C.

Correct! Wrong!

Engine bleed air temperature is controlled by:

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

A pre-cooler that uses fan air.

Conditioned air from the mixing unit.

Correct! Wrong!

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

When engine start is selected.

An engine bleed valve is open.

The APU bleed valve is open.

Correct! Wrong!

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

Engine power has to be increased by the pilot.

Push the High Pressure pb on the overhead panel.

The engine spools up automatically.

Correct! Wrong!

The overheat detection system uses a single loop for:

The wings and fuselage.

The pylons and APU.

The wings and pylons.

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.

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

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

Correct! Wrong!

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

HP valve closes.

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

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

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!

Air bleed from the engines is:

Not cooled prior to being used by the systems.

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

Only cooled in air conditioning part.

Correct! Wrong!

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

Overpressure detection.

APU and Engine 1 leak detection.

Overheat detection.

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.

Above 98% but less than 100%.

Normal (above 90% RPM).

Above 95 %.

Correct! Wrong!

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!

Airbus A320 – Pneumatic

Quiz

Airbus A320 - Pneumatic System

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

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

The lavatory/galley extract fan operates:

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

Should both channels fail in a zone controller:

During Normal operation, when would the HP valve open?

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

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

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

Temperature regulation is controlled by:

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

In normal operation which bleed air source has priority?

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

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

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

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

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

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

If a Bleed Monitoring Computer (BMC) fails:

Bleed air normally comes from the _____ of the engine.

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

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

Engine bleed air temperature is controlled by:

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

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

The overheat detection system uses a single loop for:

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

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

When selected ON, the APU bleed air will:

Air bleed from the engines is:

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

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.

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

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