PNEUMATICS

Question 1

Q 01: Engine bleed air temperature is controlled by:
A: Engine oil.
B: A pre-cooler that uses fan air.
C: Conditioned air from the mixing unit.

Answer 1

B: A pre-cooler that uses fan air.

Question 2

Q 02: If BMC1 fails BMC2 takes over all monitoring functions except:
A: Engine 1 and APU leak detection.
B: Overheat detection.
C: Automatic cross-bleed valve control.

Answer 2

A: Engine 1 and APU leak detection.

Question 3

Q 03: Bleed air normally comes from the _______ of the engine.
A: High pressure stage.
B: Intermediate stage.
C: Low pressure stage.

Answer 3

B: Intermediate stage.

Question 4

Q 04: In flight if the air pressure is insufficient even with the HP valve open:
A: The engine spools up automatically.
B: Engine power has to be increased by the pilot.
C: Push the High Pressure P/B on the ovhd panel.

Answer 4

A: The engine spools up automatically.

Question 5

Q 05: The pressure regulating and shutoff valve will close if _______ pressure is _______ or _______ airflow occurs
A: Downstream / low / reverse
B: Downstream / High / reverse
C: Upstream / low / reverse

Answer 5

C: Upstream / low / reverse

Question 6

Q 06: The crossbleed valve has two electric motors; one for the automatic mode and one for the manual mode:
A: True
B: False

Answer 6

A: True

Question 7

Q 07: The overheat detection system uses a single loop for:
A: The pylons and APU.
B: The wings and pylons.
C: The wings and fuselage.

Answer 7

A: The pylons and APU.

Question 8

Q 08: The APU BLEED FAULT light illuminates amber for an APU:
A: Overheat.
B: Malfunction.
C: Bleed leak.

Answer 8

C: Bleed leak.

Question 9

Q 09: The AUTO position of the X BLEED selector opens the crossbleed if:
A: An engine bleed valve is open.
B: The APU bleed valve is open.
C: When engine start is selected.

Answer 9

B: The APU bleed valve is open.

Question 10

Q 10: Recirculation fans in the air conditioning system direct filtered cabin air to which area?
A: The pneumatic duct; upstream of the packs.
B: The avionics compartment.
C: The Mixing unit.

Answer 10

C: The Mixing unit.

Question 11

Q 11: Temperature regulation for the A320 is controlled by:
A: One zone controller and two pack controllers.
B: Two pack controllers and the BMC’s.
C: The BMC’s

Answer 11

A: One zone controller and two pack controllers.

Question 12

Q 12: Should both channels fail in a zone controller:
A: Temperature optimization is still available for that zone from another controller.
B: Temperature optimization and the backup mode are lost.
C: The pack is not affected.

Answer 12

B: Temperature optimization and the backup mode are lost.

Question 13

Q 13: The lavatory/galley extract fan operates:
A: Only on the ground.
B: Only in flight.
C: Continuously when electrical power is available.

Answer 13

C: Continuously when electrical power is available.

Question 14

Q 14: If bleed air is being supplied by the APU or if one pack fails; pack flow will go to what rate?
A: Low.
B: Medium.
C: High.

Answer 14

C: High.

Question 15

Q 15: What happens to the outflow valve when the RAM AIR switch is selected ON?
A: The outflow valve opens immediately.
B: The outflow valve opens if cabin differential pressure is less than 1 psi.
C: Normal outflow valve control is maintained.

Answer 15

B: The outflow valve opens if cabin differential pressure is less than 1 psi.

Question 16

Q 16: When either the BLOWER or EXTRACT switches are in OVRD; air from the air conditioning system is added to ventilation air.
A: True.
B: False

Answer 16

A: True.

Question 17

Q 17: How many motors are available for the outflow valve?
A: 1
B: 2
C: 3

Answer 17

C: 3

Question 18

Q 18: Transfer between the two cabin pressure controllers is:
A: Accomplished with a switch overhead.
B: Automatic after landing or in case the operating controller fails.
C: Automatically at each takeoff.

Answer 18

B: Automatic after landing or in case the operating controller fails.

Question 19

Q 19: The maximum cabin descent rate is limited in automatic to:
A: 300 ft/min.
B: 750 ft/min.
C: 1000 ft/min.

Answer 19

B: 750 ft/min.

Question 20

Q 20: The third motor (manual) in the pressurization system is activated:
A: Automatically if both automatic motors fail.
B: In sequence after each landing.
C: When the CABIN PRESS MODE SEL switch is positioned to MAN.

Answer 20

C: When the CABIN PRESS MODE SEL switch is positioned to MAN.

Question 21

Q 21: When the cabin vertical speed exceeds _______ fpm; the vertical speed display on ECAM _______.
A: 800 / flashes green
B: 2800 / flashes green
C: 1800 / flashes green

Answer 21

C: 1800 / flashes green

Question 22

Q 22: The pneumatic system supplies high pressure air for:
A: Air Conditioning, water pressurization and engine starting
B: Wing anti-icing.
C: Hydraulic reservoir pressurization.
D: All of the above.

Answer 22

D: All of the above.

Question 23

Q 23: High pressure air has \_\_\_\_\_\_ sources. 
A: 2 
B: 3 
C: 4 
D: 5

Answer 23

B: 3

* Engine bleed systems, APU load compressor and HP ground connection.

Question 24

Q 24: With both engines operating, an ENG BLEED pb FAULT light will illuminate when:
A: The valve position differs from that of the push button.
B: The X BLEED selector is selected to SHUT.
C: The X BLEED selector is selected to OPEN.
D: The X BLEED selector is selected to OPEN or to SHUT.

Answer 24

A: The valve position differs from that of the push button.

Question 25

Q 25: Air bleed from the engines is: A: Not cooled prior to being used by the systems. B: Cooled in a heat exchanger by cooling air bleed from Fan section. C: Cooled using ambient air. D: Only cooled in air conditioning part.

Answer 25

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

Question 26

Q 26: If a Bleed Monitoring Computer (BMC) fails: A: All systems associated with the failed BMC also fail. B: The associated bleed valves close. C: The remaining BMC will automatically assume most of the failed BMC’s functions.

Answer 26

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

Question 27

Q 27: A leak detection system detects any overheating in the vicinity of hot air ducts. A: True. B: False.

Answer 27

A: True.

Question 28

Q 28: When engine and wing anti-ice are in use, and a BMC detects a bleed leak: A: Only the engine anti-ice on the associated side will be lost. B: The wing and engine anti-ice on the associated side will be lost. C: The wing anti-ice on the associated side will be lost, and the engine anti-ice on the associated side will continue to function.

Answer 28

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

Question 29

Q 29: Each bleed valve is electrically operated and controlled pneumatically by its associated BMC. A: True. B: False.

Answer 29

B: False.

Question 30

Q 30: If a BMC detects a bleed leak: A: The crew must isolate the affected leak. B: All valves that could supply pneumatic air to the area of the bleed leak will automatically close. C: All pneumatic valves close automatically.

Answer 30

B: All valves that could supply pneumatic air to the area of the bleed leak will automatically close.

Question 31

``` Q 31: If one BMC fails, the adjacent BMC takes over the monitoring of the bleed system to issue the following ECAM warnings if necessary: A: Overpressure B: Overtemperature C: Wing leak D: All of the above. ```

Answer 31

D: All of the above.

Question 32

Q 32: Bleed leak protection for the APU pneumatic duct is provided by: A: Detection loops associated with BMC #1. B: Detection loops associated with BMC #2. C: The APU BMC. D: All of the above.

Answer 32

A: Detection loops associated with BMC #1.

Question 33

``` Q 33: With the loss of pneumatic system pressure, the engine bleed valve will: A: Remain in its current position. B: Assume the mid position. C: Assume the open position. D: Assume the closed position. ```

Answer 33

D: Assume the closed position.

Question 34

Q 34: Pneumatic system operation is controlled and monitored by: A: One bleed monitoring computer. B: Two bleed valve computers. C: Two bleed monitoring computers.

Answer 34

C: Two bleed monitoring computers.

Question 35

Q 35: ECAM BLEED page: when is the GND symbol displayed? A: Whenever the aircraft is on the ground. B: All the time. C: Only when a ground air supply is connected.

Answer 35

A: Whenever the aircraft is on the ground.

Question 36

Q 36: In automatic mode, the crossbleed valve opens when the system is using APU bleed air. A: It closes if the system detects an air leak (except during engine start). B: It closes if the system detects an air leak (except in flight). C: It closes automatically if the system detects an air leak.

Answer 36

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

Question 37

Q 37: What happens when pressure and temperature are not sufficient to supply the corresponding engine bleed valve? A: HP valve closes. B: HP valve opens, if stage closed. C: HP valve opens, IP stage remains in the same configuration.

Answer 37

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

Question 38

Q 38: When additional pneumatic air is required for anti-ice, engine starting, or air conditioning: A: Additional pneumatic air will be requested by the BMC to the FADECs or the APU. B: The crew must observe minimum N1 limits. C: Both are correct.

Answer 38

A: Additional pneumatic air will be requested by the BMC to the FADECs or the APU.

Question 39

Q 39: When selected, APU bleed air: A: Will supply bleed air only if the ENG BLEED pb’s are selected OFF. B: Has priority over engine bleed air. C: Will supply bleed air only if the X BLEED selector is selected OPEN. D: Does not have priority over engine bleed air.

Answer 39

B: Has priority over engine bleed air.

Question 40

Q 40: With the APU running, the APU BLEED push button selected ON and the X BLEED selector to AUTO, the APU will: A: Only supply bleed air to the left side. B: Supply pneumatic air to both sides of the aircraft because the pneumatic crossbleed valve automatically opens. C: Will supply bleed air only to the left side unless the X BLEED selector is selected OPEN. D: Only supply bleed air to the right side.

Answer 40

B: Supply pneumatic air to both sides of the aircraft because the pneumatic crossbleed valve automatically opens.

Question 41

Q 41: Which source controls the crossbleed valve? A: Pneumatic. B: Electric.

Answer 41

B: Electric.

Question 42

``` Q 42: The crew may directly control the following bleed valves: A: Engine, engine high pressure, APU. B: Engine, intermediate pressure, APU. C: Engine, APU, crossbleed. D: Crossbleed. ```

Answer 42

C: Engine, APU, crossbleed.

Question 43

``` Q 43: APU bleed air supplies the pneumatic system if the APU speed is above _____: A: 80% B: 85% C: 92% D: 95% ```

Answer 43

D: 95%

Question 44

Q 44: A check valve near the crossbleed duct protects the APU when bleed air comes from another source: A: True. B: False.

Answer 44

A: True.

Question 45

``` Q 45: Temperature regulation is achieved by the precooler which regulates and limits the temperature at: A: 150°C B: 85°C C: 60°C D: 200°C ```

Answer 45

D: 200°C