ASA Cabin Atmosphere Control system Review Questions with Complete Solutions Already Passed
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ASA Cabin Atmosphere Control system
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ASA Cabin Atmosphere Control System
ASA Cabin Atmosphere Control system Review Questions with Complete Solutions Already Passed
1 (8497) - Which section of a turbine engine provides high pressure bleed air to an air cycle machine for pressurization and air-conditioning? - Answers A- Low or high pressure compressor
2 (8498) - At wh...
ASA Cabin Atmosphere Control system Review Questions with Complete Solutions Already Passed
1 (8497) - Which section of a turbine engine provides high pressure bleed air to an air cycle machine for
pressurization and air-conditioning? - Answers A- Low or high pressure compressor
2 (8498) - At which component in an air-cycle cooling system does air undergo a pressure and
temperature drop? - Answers A- Expansion turbine.
3 (8499) - In a freon vapor-cycle cooling system, where is cooling air obtained for the condenser? -
Answers B- Ambient air.
4 (8500) - What is ventilating air used for on a combustion heater? - Answers B- Carries heat to the
places where needed.
5 (8501) - Turbine engine air used for air-conditioning and pressurization is generally called - Answers C-
bleed air.
6(8502) - In the combustion heater, combustion air system, what prevents too much air from entering
the heaters as air pressure increases? - Answers A- Either a combustion air relief valve or a differential
pressure regulator.
7 (8503) - The cabin pressure of an aircraft in flight is maintained at the selected altitude by - Answers C-
controlling the rate at which air leaves the cabin.
8 (8504) - What controls the operation of the cabin pressure regulator? - Answers A- Cabin altitude.
9 (8505) - The basic air-cycle cooling system consists of - Answers A- a source of compressed air, heat
exchangers, and a turbine.
10 (8506) - The purpose of the dump valve in a pressurized aircraft is to relieve - Answers A- all positive
pressure from the cabin.
11 (8507) - What component might possibly be damaged if liquid refrigerant is introduced into the low
side of a vapor-cycle cooling system when the pressure is too high or the outside air temperature is too
low? - Answers A- Compressor.
12 (8508) - How can it be determined that a vapor-cycle cooling system is charged with the proper
amount of freon? - Answers A- Air bubbles in the sight glass disappear.
13 (8509) - When charging a vapor-cycle cooling system after evacuation, the low-pressure gauge fails to
come out of a vacuum. What is indicated? - Answers A- Blockage in the system.
14 (8510) - What component in a vapor-cycle cooling system would most likely be at fault if a system
would not take a freon charge? - Answers A- Expansion valve.
15 (8511) - Frost or ice buildup on a vapor-cycle cooling system evaporator would most likely be caused
by - Answers C- inadequate airflow through the evaporator.
, 16 (8512) - What test is used to determine the serviceability of an oxygen cylinder? - Answers C-
Pressure test with water.
17 (8513) - How often should standard weight high-pressure oxygen cylinders be hydrostatically tested?
- Answers A- Every 5 years.
18 (8514) - To be eligible for recharging, a DOT 3HT oxygen cylinder must have been hydrostatically
tested every three years and be retired from service after - Answers A- 24 years or 4,380 filling cycles.
19 (8515) - What type of oxygen system uses the rebreather bag-type mask? - Answers B- Continuous
flow.
20 (8516) - The altitude controller maintains cabin altitude by modulation of the - Answers C- outflow
valve.
21 (8517) - Hot compressor bleed air operates the conditioned air system on some turbine aircraft, cold
air supplied by the - Answers C- ram air cycle cooling unit.
22 (8518) - For use in pressurized aircraft, which is generally the least complicated and requires the least
maintenance? - Answers A- Chemical oxygen generator systems.
23 (8519) - The main cause of contamination in gaseous oxygen systems is - Answers A- moisture.
24 (8520) - Where does the last stage of cooling in an air-cycle air-conditioning system occur? - Answers
C- Expansion turbine.
25 (8521) - The point at which freon flowing through a vapor-cycle cooling system gives up heat and
changes from a gas to a liquid is the - Answers A- condenser.
26 (8522) - The point at which freon flowing through a vapor-cycle cooling system absorbs heat and
changes from a liquid to a gas is the - Answers B- evaporator.
27 (8523) - How is the cabin pressure of a pressurized aircraft usually controlled? - Answers B- By an
automatic outflow valve that dumps all the pressure in excess of the amount for which it is set.
28 (8524) - Which is considered a good practice concerning the inspection of heating and exhaust
systems of aircraft utilizing a jacket around the engine exhaust as a heat source? - Answers A-
Supplement physical inspections with periodic operational carbon monoxide detection tests.
29 (8525) - On some cabin pressurization systems, pressurization on the ground is restricted by the -
Answers A- main landing gear operated switch.
30 (8526) - The cabin pressure control setting has a direct influence upon the - Answers A- outflow valve
opening.
31 (8527) - The function of the evaporator in a freon cooling system is to - Answers B- lower the
temperature of the cabin air.
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