Embraer 190 - Oxygen
OXYGEN QUESTIONS MADE FROM THE AOM VOL. 2GOOD LUCK!SANTIAGO STOCKER.
Questions and Answers
- 1.
This system provides supplemental oxygen stored in a _______________ cylinder and also provides protection to the flight crew in event of smoke and other harmful gases.
- A.
Rechargeable
- B.
No rechargeable
Correct Answer
A. RechargeableExplanation
This system provides supplemental oxygen stored in a rechargeable cylinder and also provides protection to the flight crew in event of smoke and other harmful gases. The use of a rechargeable cylinder allows for the oxygen supply to be replenished and reused, ensuring that there is a continuous and reliable source of oxygen available for the flight crew. This is especially important in emergency situations where the crew may need to rely on the oxygen supply for an extended period of time. Additionally, the rechargeable nature of the cylinder makes it more cost-effective and environmentally friendly compared to single-use cylinders.Rate this question:
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- 2.
This system provides only _______________________________ oxygen to passengers and flight attendants.
- A.
Rechargeable cylinder
- B.
Supplemental chemically generated
Correct Answer
B. Supplemental chemically generatedExplanation
This system provides only supplemental chemically generated oxygen to passengers and flight attendants. This means that the oxygen is not the primary source of oxygen, but rather an additional source that is chemically generated. It is used to supplement the oxygen supply in case of an emergency or if the primary oxygen source is not sufficient.Rate this question:
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- 3.
The PBE provides the crew with __________________ oxygen for respiratory and visual protection against the effects of smoke and other harmful gases.
- A.
Positive pressure
- B.
On demand
Correct Answer
A. Positive pressureExplanation
Positive pressure refers to a system in which the pressure inside the breathing apparatus is higher than the surrounding environment. In the context of the PBE (Portable Breathing Equipment), positive pressure ensures that the crew members receive a continuous supply of oxygen, even in the presence of smoke and harmful gases. This helps to prevent the entry of smoke and other contaminants into the breathing apparatus, providing respiratory and visual protection to the crew. On the other hand, "on demand" refers to a system where the crew manually activates the oxygen supply when needed, which is not the case here.Rate this question:
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- 4.
________________________________________ throughout the airplane for use by the flight attendants to assist passengers in case of sudden decompression or first aid purposes.
- A.
Portable oxygen cylinders are located
- B.
Supplemental chemically generated oxygen
Correct Answer
A. Portable oxygen cylinders are locatedExplanation
throughout the airplane for use by the flight attendants to assist passengers in case of sudden decompression or first aid purposes. This means that there are portable oxygen cylinders placed in various areas of the airplane, making them easily accessible for the flight attendants. These cylinders are important for providing oxygen to passengers and assisting them in case of emergencies such as sudden decompression or medical emergencies where oxygen is needed.Rate this question:
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- 5.
A difference in pressure indication between the MFD and the oxygen pressure gauge outside the airplane may be observed. The difference occurs due to a ____________ correction in the MFD that does not occur on the oxygen pressure gauge.
- A.
Pressure
- B.
Temperature
Correct Answer
B. TemperatureExplanation
The correct answer is temperature. A difference in pressure indication between the MFD and the oxygen pressure gauge outside the airplane may be observed due to a temperature correction in the MFD that does not occur on the oxygen pressure gauge. Temperature affects the pressure readings, and the MFD takes into account this temperature correction to provide accurate pressure indications. However, the oxygen pressure gauge outside the airplane may not have this temperature correction feature, resulting in a difference in pressure indication between the two.Rate this question:
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- 6.
Oxygen is stored in standard 50 ft3, or an optional 77 ft3 cylinder, pressurized up to _____ at 21°/70°F. The cylinder is installed in the forward cargo compartment and does not need to be removed to recharge.
- A.
1850 psi
- B.
2000 psi
Correct Answer
A. 1850 psiExplanation
The correct answer is 1850 psi. This is the pressure at which the oxygen is stored in the cylinder. The cylinder can hold either a standard 50 ft3 or an optional 77 ft3 of oxygen. The cylinder is installed in the forward cargo compartment and does not need to be removed to recharge.Rate this question:
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- 7.
When the oxygen mask stowage box is closed and the TEST/RESET switch is pressed the headset boom microphone is restored and the mask’s microphone is ...
- A.
Turned on.
- B.
Turned off.
Correct Answer
B. Turned off.Explanation
When the oxygen mask stowage box is closed and the TEST/RESET switch is pressed, it means that the oxygen mask is no longer needed and the system is being reset. In this case, the headset boom microphone is restored, which means it is activated or turned on. On the other hand, the mask's microphone is turned off, as it is not required anymore. Therefore, the correct answer is turned off.Rate this question:
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- 8.
FULL FACE MASK OPERATING MODES Normal:
- A.
Normal Mode provides supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point where the user inhales 100% oxygen.
- B.
100% Mode provides non-diluted oxygen to the crew regardless of cabin altitude.
- C.
The “EMER” setting provides non-diluted oxygen regardless of cabin altitude, with a slightly positive pressure.
Correct Answer
A. Normal Mode provides supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point where the user inhales 100% oxygen.Explanation
Normal Mode provides supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point where the user inhales 100% oxygen. This means that in normal mode, the mask delivers a mixture of oxygen and cabin air to the user, adjusting the oxygen concentration based on the cabin pressure altitude. Once the cabin pressure reaches a certain point, the mask switches to delivering 100% oxygen to the user.Rate this question:
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- 9.
FULL FACE MASK OPERATING MODES 100%:
- A.
Normal Mode provides supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point where the user inhales 100% oxygen.
- B.
100% Mode provides non-diluted oxygen to the crew regardless of cabin altitude.
- C.
The “EMER” setting provides non-diluted oxygen regardless of cabin altitude, with a slightly positive pressure.
Correct Answer
B. 100% Mode provides non-diluted oxygen to the crew regardless of cabin altitude.Explanation
The 100% mode in full face mask operating modes provides non-diluted oxygen to the crew regardless of the cabin altitude. This means that the crew will receive pure oxygen without any dilution, regardless of the altitude of the cabin.Rate this question:
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- 10.
FULL FACE MASK OPERATING MODES Emergency:
- A.
Normal Mode provides supplemental oxygen diluted with cabin air according to the cabin pressure altitude until a preset point where the user inhales 100% oxygen.
- B.
100% Mode provides non-diluted oxygen to the crew regardless of cabin altitude.
- C.
The “EMER” setting provides non-diluted oxygen regardless of cabin altitude, with a slightly positive pressure.
Correct Answer
C. The “EMER” setting provides non-diluted oxygen regardless of cabin altitude, with a slightly positive pressure.Explanation
The "EMER" setting in the full face mask operating modes provides non-diluted oxygen regardless of cabin altitude, with a slightly positive pressure. This means that in an emergency situation, the user will receive pure oxygen without any dilution from cabin air, ensuring a higher concentration of oxygen for better breathing. The slightly positive pressure helps to ensure that oxygen is delivered effectively to the user's lungs, even in a high-altitude environment.Rate this question:
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- 11.
The PBE unit is for emergency use only. It is vacuum-sealed in a small bag inside a box. The box is equipped with a green “good condition indicator”. The equipment hood isolates the user’s head from the external ambient gases by means of an elastic neck seal. Oxygen flow starts automatically after hood donning and will be supplied for at least ______ .
- A.
15 min
- B.
45 min
Correct Answer
A. 15 minExplanation
The PBE unit is designed for emergency use and is vacuum-sealed in a small bag inside a box. The box has a green "good condition indicator" which suggests that the equipment is in proper working condition. The equipment hood, which has an elastic neck seal, isolates the user's head from external ambient gases. When the hood is donned, the oxygen flow starts automatically. The correct answer is 15 minutes, indicating that the PBE unit will supply oxygen for at least 15 minutes after it is activated.Rate this question:
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- 12.
The PBE unit provides the crew with positive pressure oxygen for respiratory and visual protection against the effects of smoke and other harmful gases at altitudes up to _________.
- A.
35000 ft
- B.
25000 ft
Correct Answer
B. 25000 ftExplanation
The PBE unit provides positive pressure oxygen to the crew for respiratory and visual protection against smoke and harmful gases. This is necessary at high altitudes where the air is thin and contains less oxygen. The unit is designed to work effectively up to an altitude of 25,000 ft, ensuring the safety and well-being of the crew in such conditions.Rate this question:
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- 13.
Individual chemical oxygen generators supply the passenger oxygen system during an emergency descent in the event of cabin depressurization. The passenger oxygen system provides supplemental oxygen only to the following:
- A.
Passenger service units (PSU), lavatories, and galley areas.
- B.
Passenger service units (PSU), flight attendant stations, lavatories, and galley areas.
- C.
Passenger service units (PSU), flight attendant stations, and galley areas.
Correct Answer
B. Passenger service units (PSU), flight attendant stations, lavatories, and galley areas.Explanation
The correct answer includes all the areas where supplemental oxygen is provided by the passenger oxygen system during an emergency descent. These areas include passenger service units (PSU), flight attendant stations, lavatories, and galley areas.Rate this question:
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- 14.
Passenger oxygen masks are located in the PSUs above the passenger seats. Each PSU contains either two or three masks that supply oxygen only for approximately ...
- A.
12 min (standard), 14 min (optional) or 22 min (optional).
- B.
30 min.
- C.
Continuously.
Correct Answer
A. 12 min (standard), 14 min (optional) or 22 min (optional).Explanation
The passenger oxygen masks are located in the PSUs above the passenger seats. Each PSU contains either two or three masks that supply oxygen for a specific duration. The standard duration is 12 minutes, but there are optional durations available as well. These optional durations are 14 minutes and 22 minutes. Therefore, the correct answer is that the passenger oxygen masks supply oxygen for 12 minutes (standard), 14 minutes (optional), or 22 minutes (optional).Rate this question:
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- 15.
The supplemental oxygen is ________ with ambient air according to the cabin altitude. At higher cabin altitudes, the mask provides 100% supplemental oxygen.
- A.
Diluted
- B.
Not diluted
Correct Answer
A. DilutedExplanation
The supplemental oxygen is diluted with ambient air according to the cabin altitude. This means that the oxygen provided through the mask is mixed with the surrounding air, making it less concentrated. At higher cabin altitudes, where the oxygen levels are lower, the mask still provides 100% supplemental oxygen, but it is diluted with a higher amount of ambient air. This ensures that the passengers receive enough oxygen to breathe properly, even in higher altitudes where the oxygen levels are lower.Rate this question:
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- 16.
Passenger oxygen mask ...
- A.
Are automatically deployed only.
- B.
Can be automatically or manually deployed.
Correct Answer
B. Can be automatically or manually deployed.Explanation
Passenger oxygen masks can be automatically or manually deployed. This means that in the event of a loss of cabin pressure, the masks can be activated either by an automatic system that detects the decrease in pressure or by a passenger pulling on the mask to release it manually. This flexibility allows for both immediate deployment in case of an emergency as well as giving passengers the ability to activate the masks themselves if needed.Rate this question:
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- 17.
The masks are automatically deployed when the cabin altitude is between ...
- A.
14000 ft to 14750 ft.
- B.
15000 ft to 15750 ft.
Correct Answer
A. 14000 ft to 14750 ft.Explanation
The masks are automatically deployed when the cabin altitude reaches a certain level. In this case, the correct answer is 14000 ft to 14750 ft, indicating that the masks will be deployed when the cabin altitude is within this range.Rate this question:
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- 18.
Manual deployment can be performed from the cockpit by positioning the passenger oxygen selector knob to the ______ position. A manual release tool located near each flight attendant station can be used in case dispensing unit door fails.
- A.
ON
- B.
OVRD
Correct Answer
B. OVRDExplanation
The correct answer is "OVRD." In the given scenario, manual deployment of the passenger oxygen can be done by positioning the passenger oxygen selector knob to the "OVRD" position. This allows the oxygen to be manually released in case the dispensing unit door fails.Rate this question:
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- 19.
When the passenger mask doors are automatic or manual commanded open the ____________________ turns ON the FASTEN SEAT BELT and the NO SMOKING (NO ELEC DEVICE optional) regardless of the switch position.
- A.
Pilot manually
- B.
System automatically
Correct Answer
B. System automaticallyExplanation
When the passenger mask doors are commanded to open, whether it is done automatically or manually, the system automatically activates the FASTEN SEAT BELT and NO SMOKING (NO ELEC DEVICE optional) signs. This means that regardless of the switch position, the system ensures that these signs are turned on to ensure passenger safety and compliance with regulations.Rate this question:
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- 20.
The switch normal operation is inhibited until the MASKS DEPLOY switch is set to ____ position.
- A.
OFF
- B.
OVRD
Correct Answer
A. OFFExplanation
The correct answer is OFF. This means that the switch's normal operation is only allowed when the MASKS DEPLOY switch is set to the OFF position. When the switch is set to any other position, the normal operation of the switch is inhibited.Rate this question:
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- 21.
The portable oxygen cylinders are for flight attendants use to assist passengers in case of sudden cabin decompression or for first aid purposes. The cylinders store 312 (11 ft3) of oxygen, pressurized to _________. at 21°/70°F.
- A.
1800 psi
- B.
2000 psi
Correct Answer
A. 1800 psiExplanation
The portable oxygen cylinders are used by flight attendants to assist passengers during sudden cabin decompression or for first aid purposes. These cylinders store 312 cubic feet of oxygen, which is pressurized to 1800 psi at a temperature of 21°F/70°F.Rate this question:
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- 22.
Two continuous flow outlets are available;
- A.
One regulates flow at 2 lt per minute for walk-around use and the second provides flow at 4 lt per minute for first aid use.
- B.
One regulates flow at 6 lt per minute for walk-around use and the second provides flow at 8 lt per minute for first aid use.
Correct Answer
A. One regulates flow at 2 lt per minute for walk-around use and the second provides flow at 4 lt per minute for first aid use. -
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