Airbus A320 - Pneumatic System

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!

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

Downstream / low / reverse.

Downstream / High / reverse.

Upstream / low / reverse.

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.

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 95 %.

Above 98% but less than 100%.

Correct! Wrong!

The overheat detection system uses a single loop for:

The wings and fuselage.

The wings and pylons.

The pylons and APU.

Correct! Wrong!

During Normal operation, when would the HP valve open?

With pilot intervention on the overhead panel.

When IP pressure is insufficient for the demand.

At low thrust settings.

At TOGA power.

Correct! Wrong!

When selected ON, the APU bleed air will:

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

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

Have priority over engine bleed air.

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!

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.

Air bleed from the engines is:

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

Only cooled in air conditioning part.

Not cooled prior to being used by the systems.

Correct! Wrong!

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

True.

False.

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 during engine start).

It closes automatically if the system detects an air leak.

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

Correct! Wrong!

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

Automatic cross-bleed valve control.

Overheat detection.

Engine 1 and APU leak detection.

Correct! Wrong!

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

Assume the closed position.

Remain in its current position.

Assume the open position.

Correct! Wrong!

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

An engine bleed valve is open.

When engine start is selected.

The APU bleed valve is open.

Correct! Wrong!

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

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

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

HP valve closes.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

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

Push the High Pressure pb on the overhead panel.

The engine spools up automatically.

Engine power has to be increased by the pilot.

Correct! Wrong!

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

APU overheat.

APU bleed leak.

APU overheat or bleed leak.

Correct! Wrong!

An ECAM caution will also appear.

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 normal operation which bleed air source has priority?

APU.

Engine Bleed.

RAM Air.

Ground Air.

Correct! Wrong!

Bleed air normally comes from the _____ of the engine.

Low pressure stage.

High pressure stage.

Intermediate stage.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

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

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.

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

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 Mixing unit.

The avionics compartment.

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!

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

90 deg.C.

175 deg.C.

200 deg.C.

150 deg.C.

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!

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

APU and Engine 1 leak detection.

Overpressure detection.

Overheat detection.

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!

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.

True.

False.

Correct! Wrong!

The lavatory/galley extract fan operates:

Only on the ground.

Continuously when electrical power is available.

Only in flight.

Correct! Wrong!

Airbus A320 – Pneumatic

Quiz

Airbus A320 - Pneumatic System

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.

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

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 overheat detection system uses a single loop for:

During Normal operation, when would the HP valve open?

When selected ON, the APU bleed air will:

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

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

Air bleed from the engines is:

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

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:

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

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

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

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

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

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

Engine bleed air temperature is controlled by:

In normal operation which bleed air source has priority?

Bleed air normally comes from the _____ of the engine.

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

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

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

Temperature regulation is controlled by:

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

Should both channels fail in a zone controller:

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

If a Bleed Monitoring Computer (BMC) fails:

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.

The lavatory/galley extract fan operates:

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