Quiz
Chapter 1 : Air Conditioning/Pressurization/Ventilation
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Questions in this quiz (111)
1Conditioned air is distributed to:
- ACockpit, cargo bay and cabin
- BCockpit, fwd and aft cabins
- CCockpit, avionics bay and cabin
- DCockpit, cabin and holds 1 and 2 only
2Hot air Fault light illuminates on the air conditioning panel
- AThe hot pressure regulating valve opens and the trim air valve closes
- BThe hot pressure regulating valve Closes and the trim air valve opens
- CThe hot pressure regulating valve closes and the trim air valve closes
- DThe hot pressure regulating valve opens and the trim air valve opens
3Does the trim air provide the warm air or the cold air to the air conditioning system?
- ACold air
- BWarm air
4In case of zone controller primary and secondary channel failure, what temperatures are maintained by pack one and pack two?
- A15 deg.C both
- B25 deg.C both
- C20 deg.C for pack one and 10 deg.C for pack two
- D24 deg.C for pack one and 15 deg.C for pack two
5In normal flight in closed circuit configuration, the avionics ventilation system controls the temperature of the cooling air by:
- AAdding air conditioned air to the flow
- BExtracting air overboard
- CAdding avionics bay air
- DPassing air through a skin heat exchanger
6To enable Ram air to the mixture unit, The Ram air switch should be used:
- AAt any time
- BOnly when differential pressure is less than 1 psi.
- CWhen pressure is greater than 1 psi diff.
- DOnly after outflow valve is fully opened
7Pack controller, primary channel failure.
- AThe secondary computer operates as a backup mode and regulation is not optimized
- BThe secondary computer takes over (all functions as normal)
- CPack is lost
- DPack outlet temperature is controlled at 15 deg.C
8Pack controller, secondary channel failure
- ANo effect on pack regulation backup mode is lost
- BPack is lost
- CNo effect (all modes still available)
- DPack outlet temperature is controlled at 15 deg.C'
9Pack controller, primary and secondary channel failure
- APack outlet temperature is controlled to between 5 and 30 deg.C by the anti-ice valve
- BThe pack is closed
- CThe packs deliver a fixed temperature of 20 deg.C
10Hot air pressure regulating valve failed open:
- AOptimized regulation is lost
- BThe temperature stays at the value selected
- CNo effect
- DCabin temperature will be controlled at the upper limit 30 deg.C
11Bleed air supplied from the APU (APU bleed valve open), the pack flow is automatically selected:
- AHigh
- BNormal
- CLow
- DEconomic flow
12Trim air valve, each one optimizes the temperature by:
- AAdding hot air
- BAdding fresh air
- CModulating of pack flow
- DAdding re-circulated air
13Hot air pressure regulating valve:
- ARegulates the pressure of hot air tapped upstream of the packs
- BIs spring loaded open in the absence of air
- COpens automatically in case of duct overheat
- DOpens automatically if the cabin trim air valve fails
14Pack flow control valve:
- AIs pneumatically operated and electrically controlled
- BElectrically operated and pneumatically controlled
- COpens automatically during engine starting
- DIs spring loaded to open
15Engine flow demand, when the heating or cooling demand in one zone cannot be satisfied:
- AThe minimum idle must be increased manually
- BThe minimum idle is increased automatically
- CIn any case, flight idle is sufficient
- DThe APU must be used to supply additional air.
16What is the Normal Maximum cabin altitude?
- A8,000 ft
- B9,550 ft +/- 350 ft
- C14,000 ft
- D800 ft
17What is the Maximum negative Differential pressure for the cabin?
- A0 psi.
- B1 psi.
- C2 psi.
- D8.6 psi.
18It is permissible to use simultaneously packs and LP ground unit during long stops in a hot airfield
- AYes
- BNo
- CYes, if external temperature is greater than 50 deg C
- DYes, provided the airflow supplied by the ground cart is less than 1.2 kg/s
19What are the different sources of air for air conditioning and pressurization?
- AEngine bleed air and recirculated air (only on ground)
- BEngine bleed air and recirculated air.
- CEngine bleed air and recirculated air, or if selected, APU bleed air and recirculated air.
- DEngine bleed air only.
20During the exterior preflight on a warm day, in what position would you expect to find the avionics ventilation system INLET and EXTRACT valves to be in?
- AClosed
- BOpen
- CClosed or open regarding of the APU bleed valve
- DClosed or open
21What happens to the pack flow control valves during engine start?
- AThey must be selected off
- BThey must be selected off on cold days only
- CThey must be selected off on hot days only
- DThey are closed automatically
22The temperature of each aircraft zone is optimized by means of
- AHot Air valve
- BZone control valve
- CPack Flow Valve
- DTrim Air valve
23When does normal pressurization occur?
- AAfter second engine star
- BPressurization occurs during taxi
- CPressurization occurs during the takeoff roll
- DAfter rotation
24When does normal depressurization occur?
- A100 feet AGL above touchdown
- BIt is complete 1 minute after touchdown
- CAfter flap retraction
- DOn landing touchdown
25Under what conditions should the pack flow controller be set to LO?
- AWith a low passenger load to reduce bleed air demand and improve fuel efficiency
- BWith a low passanger load to increase cabin tempreature
- CWith a high passenger load to reduce cabin temperature
- DIn cold conditions to achieve a higher cabin temperature range
26Which statement is correct regarding illumination of the amber AFT ISOL VALVE fault light?
- AAutomatically closes the aft cargo compartment isolation valves
- BMeans that either the inlet or outlet isolation valve(s) disagrees with the switch position
- CIndicates that the extract fan has stopped
- DAll of the above
27Pressurization controllers receive inputs from:
- ALGCIU, ADIRU, FMGS, and EIU
- BLGCIU’s and the MCDU
- CLGCIU’s and pitot static sources
- DMCDU and LGCIU’s
28What computers control the cabin and cockpit conditioned air?
- ATwo zone controllers that pass information and requests to two pack controllers
- BTwo pack controllers that pass information and requests to three zone controllers
- CThree zone controllers that pass information and instructions to two pack controllers for three zones
- DOne zone controller that passes information and instructions to two pack controllers for three zones
29When would you select RAM AIR ON?
- AIf additional cooling is required on the ground
- BDual pack failure or smoke removal
- CWhen pack temperatures are too high
- DWhen there is smoke in the cabin
30What happens when a temperature selector rotary knob is adjusted?
- AA signal is sent to the zone controller requesting a different temperature
- BNothing as there is no relationship between a temperature selector knob and the trim air valve
- CThe associated trim air valve immediately moves to a different position
31With APU BLEED ON and engine BLEED switches ON with engines running, what is the position of the engine bleed valves?
- AClosed
- BOpen
- CDepends on the crossbleed selector
32Pressurization is normally automatic. Can you interfere with it?
- AYes,
CABIN PRESS MODE SEL to OVERRIDE and MAN V/S CTL toggle switch - BYes,
manually set landing elevation using the LND ELEV AUTO selector - CBoth are correct
- AYes,
33Under what conditions should the pack flow controller be set to HI?
- AIn cold conditions to achieve a higher cabin temperature range
- BWith a low passenger load to increase cabin air flow
- CWith a high passenger load in hot conditions in order to help reduce the cabin temperature
34What is the function of the ram air valve?
- AVentilation while on the ground
- BEmergency smoke removal and ventilation in the event of dual pack failure
- CAvionics cooling
- DCargo ventilation & avionics cooling
35Placing the EXTRACT push button to override:
- ADe-energizes the extract fan
- BPlaces the avionics ventilation system in the closed configuration
- CInsures the extract fan will continue to be energized
- DPlaces the avionics ventilation system in the open configuration
36The Ram Air valve:
- AShould be opened for increased ventilation while on the ground
- BWill open automatically after engine start
- CShould be opened for increased ventilation while in flight
- DMust be manually activated
37What limitation is associated with the ram air valve?
- ADo not open if cabin pressure is greater than 1 psi
- BOnly open while on the ground
- CWill not open if the DITCHING switch is off
- DOperation is automatic
38With the pressurization system in the automatic mode, which valves are closed when the ditching push button is selected on?
- AAll valves below the water line
- BAPU inlet
- CThe engine bleed valves
- DOnly the avionics cooling valves
39What is the maximum negative differential pressure for the cabin?
- A0 Psi
- B1 psi
- C2 psi
- D3 psi
40The HOT AIR valve push button controls:
- AThe trim air valve
- BThe hot air manifold
- CThe engine bleed valves
- DThe pack flow control valves
41Both pressurization auto controllers are set by the active flight plan loaded in the MCDU. The QNH entry on the MCDU Approach Performance page refines the depressurization schedule for the landing.
- ATrue
- BFalse
42Aft cargo indications may be found on which ECAM page(s)?
- AOnly the CRUISE page
- BOnly the BLEED page
- COnly the CAB PRESS page
- DThe CRUISE page and the COND page
43Avionics ventilation system indications may be found on which ECAM page(s)?
- AOnly the BLEED page
- BOnly the CAB PRESS page
- CThe in-flight ECAM cruise page
- DThe in-flight ECAM cruise page and the CAB PRESS pages
44When APU is supplying the packs, the pack controller sends a demand signal to increase airflow when a zone temperature cannot be satisfied. This signal is sent to the:
- APack Ram Air Inlet Flap
- BAPU ECB
- CPack Outflow Control Valve
- DEngine interface units EIU’s'
45In case of zone controller primary and secondary channel failure, what temperatures are maintained by Packs 1 and 2?
- A15 deg C both
- B25 deg.C both
- C20 deg.C for Pack one and 10 deg.C for Pack two
- D24 deg.C for Pack one and 10 deg.C for Pack two
46The PACK FLOW controller is set to NORM and yet the ECAM display shows PACK FLOW to be high. How is this possible?
- AAs the engines are not running the PACK FLOW indicators are at the position they were selected to at the last shut down
- BB: As no bleed air is flowing the PACK FLOW valves are spring loaded to the fully open position
- CHI flow is automatically selected regardless of PACK FLOW selector position because air is only being supplied by the APU.
- DWith cold outside air conditions the PACK FLOW is automatically increased to help increase the cabin temperature
47When would you select PACK FLOW to HI?
- ASmoke removal or hot/humid conditions
- BWhen passengers are complaining it is too cold
- CAbove FL 350
- DAbove FL 250
48Which of the following statements is correct concerning conditioned air?
- AConditioned air and trim air are mixed then distributed to each zone
- BRecirculated air, conditioned air and hot trim air are mixed then distributed to each zone
- CHot trim air is added to the mixing unit before distribution to each zone
- DRecirculating fans draw cabin air to a mixing unit where conditioned air is added
49How many temperature selectors are there on the A320? How many temperature zones are there?
- AThree rotary temperature selectors and one zone
- BThree rotary temperature selectors, one each for the cockpit zone, the forward cabin zone, and the aft cabin zone.
- CTwo rotary temperature selectors, one for the cockpit and first class zone and one for the aft cabin zone
- DFour rotary temperature selectors and four zones
50The temperature selectors are located in:
- AThe cockpit
- BThe cabin
- CBoth
- DOnly on the CIDS panel
51During normal flight, the avionics ventilation system controls the temperature of the cooling air by:
- AAdding air conditioned air to the flow
- BExtracting air over board
- CAdding avionics bay air
- DPassing air through a skin heat exchanger
52Placing the avionics ventilation system in the smoke configuration:
- AOpens the #1 GLC
- BOpens the cargo under-floor valves
- COpens the #2 GLC
- DDe-energizes the blower fan, extract fan runs, and opens the air conditioning extract valves
53How can you change controllers during flight?
- ACycle the LDG ELEV AUTO knob out of the AUTO position then back to AUTO
- BCycle the CABIN PRESS MODE SEL push button to the MAN position then back to AUTO
- CCycle the cabin pressurization MAN V/S CTL switch
54 Hot air “FAULT” light illuminates on the air conditioning panel.
- AThe hot air press reg. valve opens and the trim air valves close
- BThe hot air press reg. valve closes and the trim air valves open
- CThe hot air press reg. valve closes and the trim air valves close
55How many trim air valves are there?
- AOne trim air valve
- BThree: one each for the cockpit zone, the forward cabin zone, and the aft cabin zone
- CTwo: one for the cockpit and first class zone, and one for the cabin zone
- DFour: one each for the cockpit zone, the first class zone, and two for the aft zone
56What position do the pack valves go to in the event of a loss of the bleed system pressure?
- AThey remain in their last positio
- BFull open
- CMid position
- DClosed
57The RAM AIR switch should be used:
- AAt any time
- BWhen differential pressure is less than 1 psi
- CWhen differential pressure is more than 1 psi
- DOnly after the outflow valve is fully open
58What is the function of the Pack Flow selector?
- AAllows the pilot to increase pack flow but will not allow a manual decrease in flow if needed by the aircraft demands
- BAlways allows high flow regardless of switch position when the APU is used for air conditioning
- CBoth are correct
59Which configuration is the avionics ventilation system in while airborne with no abnormals present?
- AOpen
- BSmoke
- CFire
- DClosed
60What is the maximum altitude associated with the pressurization system?
- A39,100 feet
- B39,500 feet
- C41,000 feet
- D41,100 feet
61Trim air valves are controlled by:
- AThe zone controller
- BAnti-ice valve
- CHot air pressure regulating valve
- DThe pack controller
62Which statement is TRUE concerning the cargo compartment ventilation?
- ABoth cargo compartments are pressurized and heated using both cabin air and hot trim air
- BRecirculated air, conditioned air, and hot trim air are mixed then distributed to each cargo compartment
- COnly the aft cargo compartment is heated and ventilated. Cabin ambient air is mixed with hot trim air and drawn through isolation valves by extraction fans
63The APU BLEED FAULT indicates that the main APU controller is in fault
- ATrue
- BFalse
64Aft cargo ventilation is controlled by:
- AThe aft cargo rotary selector knob
- BThe cargo ventilation controller
- CThe zone controller and the SDCU
- DThe cargo ventilation controller and the aft cargo rotary selector knob
65The vent fan runs any time there is a normal ships power and the isolation valves are open
- ATrue
- BFalse
66The cabin zone temperature sensors are ventilated by the air extracted by the lavatory and galley fans
- ATrue
- BFalse
67Placing the BLOWER push button to override:
- AInsures the blower fan will continue to run
- BPlaces the avionics ventilation system in the open configuration
- CDe-energizes the blower fan
- DPlaces the avionics ventilation system in the closed configuration
68Pressurization indications are found on which ECAM page(s)?
- ABLEED page
- BOnly on the CAB PRESS page.
- CThe in-flight ECAM cruise page and the CAB PRESS page
- DOn the CAB PRESS & BLEED pages
69How many outflow valves are there?
- AOne valve with one door
- BOne valve with two doors.
- CTwo valves with only one door visible
- DTwo valves (one main + one back-up) with only two doors visible
70At what cabin altitude do you get an ECAM warning?
- A8,800 feet
- B9,000 feet
- C9,550 feet
- D14,000 feet
71When the pack flow control knob is positioned to HI, air flow is:
- A80% of normal rate
- B100% of normal rate
- C120% of normal rate
- D150% of normal rate
72If you select a position other than the AUTO detent on the LDG ELEV AUTO selector, how can you see the actual landing elevation value?
- AOn the ECAM CRUISE
- BOn the PRESS page
- COn the ECAM CRUISE or the PRESS page
73What will cause the ENG BLEED fault light to come on?
- AOverpressure (downstream of bleed valve)
- BBleed overheat
- CWing or engine leak on associated side.
74What does the CARGO HEAT HOT AIR FAULT light indicate?
- AA duct overheat is detected
- BThe Aft Cargo Pressure Regulating valve closes
- CThe system will reset if the ISOL VALVE switch is ON
- DAll of above.
75During Ground function operation, the outflow valve is:
- AFully open
- BFully closed
- CPositioned according to FMGS demands.
76The outflow valve is powered by:
- AOne of two electric motors
- BOne of three electric motors
- CThree mechanically linked electric motors
77The purpose of the safety valve is to avoid:
- AExcessive positive pressure differential
- BExcessive negative differential
- CBoth are correct
78When landing elevation is set to AUTO, the landing elevation is sent to the controller from:
- AFMGS
- BFCU
- CADIRS
- DCaptain baro ref
79The mixing unit is connected to:
- APacks, cabin air, emergency ram air inlet and Lp ground connector
- BPacks, emergency ram air inlet and Lp ground connector
- CPacks and cabin air
- DPack 1 and pack 2 only
80Once set to “ON” the air conditioning packs operate:
- AAutomatically and independently of each other
- BNormally, but the output of one affects the other
- CAutomatically, pack one as a master, pack two as a slave
- DAutomatically, pack two as a master, pack one as a slave.
81Emergency ram air inlet. When set to “ON” the ram air valve will open and supply airflow:
- AIn any case
- BDiff. press < 1 psi, and ditching not selected
- CProvided ditching is not selected
- DProvided ditching is selected
82Cond. Zone regulator fault (primary channel failed):
- ACabin zone is at fixed temperature
- BPacks are at fixed temperature
- CSecondary channel operates as back up and operation is as normal
- DThe packs deliver a fixed temperature. 20 deg.C for pack one and 10 deg.C for pack two
83Temperature control is automatic and is regulated by:
- AZone controllers
- BPack 1 and 2 controllers
- CZone controllers, pack 1 and 2 controllers
- DThe pack flow control valves only
84If a pack controller fails (primary and secondary channel failure), the pack outlet air temperature is controlled by:
- ARam Air Valve
- BHot air pressure regulating valve
- CAnti-ice valve
- DTrim air valve.
85The zone controller optimizes temperature by action on:
- APack anti-ice valve
- BTrim air valve
- CPack flow control valve
- DHot air pressure regulating valve
86When using APU bleed to supply the packs, with the pack flow selector at LO, the pack airflow is:
- A80% of normal
- BNormal
- C120% of normal
- D110% of normal
87The pack flow control valve closed automatically in case of:
- APack overheat, engine starting, or operation of the fire or ditching push button
- BBleed valve failure, pack outlet pressure increase
- CTrim air valve failure
- DAll of the above
88In case of trim air system fault (zone controller primary channel failure), the secondary channel of the zone controller regulated the zone temperature at:
- A14 deg.C
- B24 deg.C
- C15 deg.C
- D10 deg.C
89In case of total zone controller failure:
- AHot air and trim air valves open and packs deliver air at a fixed temperature (15 deg.C pack 1 and 10 deg.pack2)
- BHot air and trim air valves close and packs deliver air at a fixed temperature (15 deg.C pack 1 and 10 deg.pack2)
- CHot air and trim air valves close and packs deliver air at a fixed temperature (20 deg.C pack 1 and 10 deg.pack2)
- DHot air and trim air valves open and packs deliver air at a fixed temperature (20 deg.C pack 1 and 10 deg.pack2)
90During landing run, Ram Air Inlet flaps open when speed is less than:
- A77 kts (after 30 seconds delay
- B70 kts (after 1 minute delay)
- C70 kts (after 20 seconds delay)
- D85 kts (after 20 seconds delay)
91The ditching switch when selected sends a closure signal to:
- AOutflow valve
- BRam air inlet and ventilation extract valves
- CThe pack flow control valves
- DAll of the above
92In flight with pressure controller 1 in use, if it fails:
- AYou have to use the manual control
- BTransfers automatically to controller 2
- CYou have to select manually controller 2
- DYou have to set the landing elevation.
93In normal operation, pressurization is:
- AFully automatic
- BManually controlled
- CAutomatic, but landing elevation must be manually set
- DRemaining automatic only with CPC 1 is in use
94During ground function operation, the outflow valve is:
- AFully open
- BFully closed
- CPositioned accordingly to FMGS demands
- DOperating in abort mode
95To see the operation of the outflow valve, it is necessary to call ECAM:
- ACond page
- BBleed page
- CPress page
- DVent page
96Two identical, independent, automatic digital pressurization controllers are used for system control:
- AOne controller active, one in standby
- BBoth controllers monitored by FMGC
- CNo controller for climb phase and No.2 controller in cruise and descent
- DNo.1 controller for climb and No.2 for descent
97Which controller generates excess cabin altitude and pressure signals for ECAM indication in manual mode:
- ABoth
- BNo.1
- CNo2
- DNeither
98The safety valves are operated:
- AElectrically
- BHydraulically
- CPneumatically
- DBy the FMGC
99The purpose of the safety valves is to avoid:
- AExcessive positive differential pressure
- BExcessive negative differential pressure
- CAll of the above
100When mode selector is selected to manual, the outflow valve is controlled by signals sent via controller 1 or 2
- ATrue
- BFalse
101On ECAM Cab. press page, the outflow valve indicator changes to amber if:
- AIt is fully closed
- BIt is fully open on the ground
- CIt is fully open in flight
- DIt is not fully open on the ground
102On ECAM Cab. press page, the safety valve indication changes to amber if:
- ABoth safety valves are fully open
- BBoth safety valves do not open
- CBoth safety valves are fully closed
- DOne safety valve is open.
103On ECAM Cab. press page, the cabin altitude indication changes to red when cabin altitude is:
- A> 14,000 ft
- B> 12,500 ft
- C> 10,000 ft
- D>9,550 ft
104Following a system 1 fault:
- AMaster caution is activated and ECAM actions must be taken by the crew
- BThe crew manually operates the system
- CSystem 2 must be selected by the crew
- DSystem 2 takes over automatically without any crew action
105The pressure safety valve opens at:
- A8.06 psi
- B8.6 psi
- C9.0 psi
- D7.0 psi
106After the engine start, the Pack Flow Control Valves automatically open, however on the ground, reopening of the valves is delayed for _____ after the first engine start.
- A30 seconds
- B45 seconds
- C50 seconds
- D60 seconds
107The Ram Air Inlet Flaps remain open during takeoff and landing to allow extra airflow during high power situations.
- ATrue
- BFalse
108The temperature of the air that exits the compressor section is displayed above the Pack Flow. It normally displays green, but displays amber for temperatures over:
- A180 deg.C
- B200 deg.C
- C230 deg.C
- D250 deg.C
109The trim air valves are _____ controlled by the zone controller
- AElectrically
- BPneumatically
- CHydraulically
- DNone of the above
110The avionics ventilation system is not capable of using external air to provide cooling airflow
- ATrue
- BFalse
111During flight below _____, the Ram Air Valve can provide an emergency source of conditioned air during non-pressurized flight.
- A5,000 feet
- B8,000 feet
- C10,000 feet
- D12,500 feet
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- Quiz on Chapter 1 : Air Conditioning/Pressurization/Ventilation, created by carlton fernandes on 22/08/2016.
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