FREE AND STUDY GAMES ABOUT 10 CABIN ATMOSPHERE

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FREE AND STUDY GAMES ABOUT 10 CABIN ATMOSPHERE

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -87 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: What is the condition of the refrigerant as it enters the evaporator of a vapor-cycle cooling system?

Answer:

Low-pressure liquid.Question 2: What is the condition of the refrigerant as it enters the condenser of a vapor-cycle cooling system?

Answer:

High-pressure vapor.Question 3: How can it be determined that a vapor-cycle cooling system is charged with the proper amount of freon?

Answer:

Air bubbles in the sight glass disappear.Question 4: What may be used as a lubricant on oxygen system tapered pipe thread connections?

Answer:

Teflon tape.

Question 5: The purpose of the dump valve in a pressurized aircraft is to relieve

Answer:

all positive pressure from the cabin.Question 6: What test is used to determine the serviceability of an oxygen cylinder?

Answer:

Pressure test with water.Question 7: What is used in some oxygen systems to change high cylinder pressure to low system pressure?

Answer:

Pressure reducer valve.

Question 8: A contaminated oxygen system is normally purged with

Answer:

oxygen Question 9: When purging a freon air conditioning system, it is important to release the charge at a slow rate. What is the reason for the slow-rate discharge?

Answer:

Prevent excessive loss of refrigerant oil.

Question 10: Oxygen systems in unpressurized aircraft are generally of the

Answer:

continuous-flow and pressure-demand types.

Question 11: The cabin pressure control setting has a direct influence upon the

Answer:

outflow valve opening.Question 12: 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?

Answer:

Compressor

Question 13: For use in pressurized aircraft, which is generally the least complicated and requires the least maintenance?

Answer:

Chemical oxygen generator systems.

Question 14: The air-cycle cooling system produces cold air by

Answer:

extracting heat energy across an expansion turbine.

Question 15: How is the cabin pressure of an aircraft maintained in flight?

Answer:

By controlling the rate of the air flowing out of the cabin.

Question 16: How often should standard weight high-pressure oxygen cylinders be

hydrostatically tested?

Answer:

Every 5 years.

Question 17: Oxygen used in aircraft systems

Answer:

is at least 99.5 percent pure and is practically water free.Question 18: The purpose of the airflow metering aneroid assembly found in oxygen diluter demand regulators is to

Answer:

regulate airflow in relation to cabin altitude when in diluter demand position.Question 19: What is the purpose of a mixing valve in a compressor bleed air air conditioning system?

Answer:

Control the supply of hot, cool, and cold air.

Question 20: The basic air-cycle cooling system consists of

Answer:

a source of compressed air, heat exchangers, and a turbine.

Question 21: 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?

Answer:

Supplement physical inspections with periodic operational carbon monoxide detection tests.Question 22: In an operating vapor-cycle cooling system, if the two lines connected to the expansion valve are essentially the same temperature, what does this indicate?

Answer:

The expansion valve is not metering freon properly.

Question 23: Which best describes cabin differential pressure?

Answer:

Difference between the ambient and internal air pressure.Question 24: The component that determines the pressure level in the cabin is the cabin air pressure

Answer:

outflow valve.Question 25: What controls the amount of oxygen delivered to a mask in a continuous-flow oxygen system?

Answer:

Calibrated orifice.

Question 26: The cabin pressurization modes of operation are

Answer:

differential, unpressurized, and isobaric.Question 27: In the diluter demand oxygen regulator, when does the demand valve operate?

Answer:

When the user breathes.Question 28: When an aircraft's oxygen system has developed a leak, the lines and fittings should be

Answer:

bubble tested with a special soap solution manufactured specifically for this purpose.