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Asys 340 A > MOD 5 > Flashcards

MOD 5 Flashcards

(68 cards)

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1
Q

The largest drop in temperature in an ACM occurs as the air passes through the _____________

A

expansion tube

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2
Q

Match the vapour cycle system components to their definitions. -Meters out low pressure, low temperature liquid refrigerant. 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator

A

thermal expansion valve

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3
Q

Pressurized aircraft can use cabin ventilation systems

A

Only when unpressurized

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4
Q

What three instruments are commonly found in large aircraft to monitor the pressurization system?

A

cabin vsi cabin altimeter cabin differential pressure

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5
Q

Large aircraft outflow valves are controlled by

A

AC and DC electric motors

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6
Q

Hydrostatic testing is used on

A

High pressure oxigen bottles

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7
Q

What two heater components are inspected in AD 2004-21-05?

A

-combustion liner -combustion air pressure switch

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8
Q

the pressure relief valve on the______(50 %)(outflow/safety) valve is set slightly higher than the______(50 %)(outflow/safety) valve

A

safety, outflow

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9
Q

What is the difference between a shroud style heater and an intensifier tube?

A

An intensifier tube is mounted inside the exhaust pipe and the shroud is outside the exhaust pipe

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10
Q

The heat required for a liquid to be transformed a vapour is called

A

latent heat of evaporation

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11
Q

Pilot controlled thermostatic switch

A

Duct Switch

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12
Q

Normally open thermostatic switch

A

Purge switch

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13
Q

Used by pilot to latch K-10 relay

A

Heater Start Switch

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14
Q

on our small to medium sized aircraft pressurization systems, the _____________ valve does most of the work on a normal pressurized flight

A

outflow

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15
Q

__________________ is caused when there’s not enough pressure to allow the oxygen to be absorbed into the blood.

A

anoxia

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16
Q

Set at 0.2 psi

A

Combustion air pressure switch

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17
Q

Overall system safety switch

A

Overheat Switch

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18
Q

On our small to medium sized aircraft pressurization systems, the outflow valve performs how many functions?

A

Three

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19
Q

Turns on combustion blower

A

Off/Vent/Heat Switch

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20
Q

All refrigerant must be converted to a ____________ before entering the compressor

A

vapour

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21
Q

When the set temperature is reached, K-10 is unlatched

A

Overheat Switch

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22
Q

All aircraft must be operated with a cabin altitude less than 8000’ True or False

A

false

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23
Q

Match the vapour cycle system components to their definitions. -Refrigerant enters as high pressure, high temperature vapour and leaves as high pressure, high temperature liquid 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator

A

condensor

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24
Q

What will cause the Heater Fault Light to illuminate?

A

The Combustion Air Pressure Switch opening

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25
Acts as backup to duct switch
Cycle Switch
26
Which of the following is not used to provide air to the ACM? 1.APU bleed air 2.Main engine bleed air 3.Ground cart 4.Ram air
Ram air
27
AD CF90-03R2 requires that a leak test be performed on all exhaust type heaters every year or 150 hours true or false
false
28
Match the vapour cycle system components to their definitions. -Acts as system reservoir 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator
Receiver Dryer
29
When filling an onboard oxygen bottle we purge the lines by?
allowing a small amount of oxygen to flow through the service line before attaching to the oxygen servicing fitting
30
\_\_\_\_\_\_\_\_\_is caused when there is not enough pressure to allow the oxygen to be absorbed into the blood
anoxia
31
Match the vapour cycle system components to their definitions. -Drives the refrigerant around the system 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator
compressor
32
Match the vapour cycle system components to their definitions. -Acts as system filter 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator
Receiver Dryer
33
What should be checked before opening the window on the Cessna 185 in flight?
Airspeed
34
These control the flow of bleed air through the air cycle system
pack valves
35
When filling an onboard oxygen bottle from a cascade cart, you should start with the supply bottle that:
as the lowest pressure which is above the pressure of the bottle being filled.
36
ECS does not control what on an aircraft -Cabin air pressure -Cabin air temperature -Cabin air contamination -Cabin air oxygen concentration
-Cabin air oxygen concentration
37
Adjustable thermostatic switch
Duct Switch
38
The _____________ valve opens when the depressurization switch is activated on our large aircraft pressurization systems
outflow
39
AD 2004-21-05 is applicable to:
Combustion air type heaters
40
How should oxygen generators be made safe for shipping
Lanyard pin removed and safety cap installed
41
The pressure relief valves on our large aircraft pressurization systems performs how many functions?
one
42
What malfunction would cause the heater to produce heat only while the heater start switch is pressed and cold air when the heater start switch is released?
K-10 relay not functioning
43
Maintains the maximum safe temperature for the heater
Cycle Switch
44
Match the vapour cycle system components to their definitions. -Located in the airflow outside the cabin of the aircraft 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator
condensor
45
1 BTU is required to raise 1 pound of water 1° Celsius. true or false
false 1 BTU is required to raise 1 pound of water 1° fahrenheit.
46
Prevents overheating when heater is shut down
Purge switch
47
What component determines heater TIS
Hobbs meter
48
Match the vapour cycle system components to their definitions. -Cools down the cabin air 1.Compressor 2.Condensor 3.Receiver Dryer 4.Thermal Expansion Valve 5.Evaporator
Evaporator
49
if a wire is labeled "H12A16", we can determine that the wire is:
16 gauge
50
What device in our heater system us useful when troubleshooting an electrical issue?
Terminal block
51
a bus bar uses a: -non conductive strip -conductive strip
-conductive
52
The vapour cycle system can be turned off and on by engaging a clutch in the \_\_\_\_\_\_\_\_\_\_\_\_\_
compressor
53
In what forms are oxygen stored on an aircraft?
gaseous, chemical (solid), liquid
54
What causes the cabin altitude to increase on the small to mid sized aircraft pressurization systems?
vacuum is increased causing the outflow valve to open
55
Oxygen generators can be tested?
no
56
List three sources for cabin pressurization air
bleed air, turbocharger, supercharger
57
Maximum cabin differential pressure is -the structural limit of the pressure vessel -the maximum pressure difference allowed between ---the outside air and the cabin air. -determined by the aircraft manufacturter -all above
all of the above
58
What is the purpose of the dump switch?
Depressurization the plane in the event of a malfunction or to remove contaminants
59
Where is the combustion air pressure switch located?
Downstream of the combustion air blower
60
to determine the correct pressure to fill an oxygen bottle for a given temperature, we can use a ________ supplied by the manufacturer
chart
61
when pilots turn on the emergency mode on the diluter-demand oxygen regulator the regulator provides?
100% oxygen under pressure
62
a diluter oxygen regulator can provide ?
-oxygen mixed with cabin air -100% oxygen -100% oxygen under pressure
63
Prevents heat from starting if combustion blower is not working
Combustion air pressure switch
64
A terminal s block is made up of : -non conductive strip -conductive strip
-non conductive strip
65
what happens if an oxygen bottle pressure becomes too high ?
the pressure relief valve will bleed off the pressure outside after blowing up the green disk
66
what is G- H -J
G=water separator control valve H =water drain tube J= Vernatherm
67
what is D-E-F
D = Secundary heat exchanger E =Expantion tube F= water separator
68
what is A-B-C
A = Pack Valves B =Primary Heat exchanger C= compresor

Asys 340 A (4 decks)

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