Noor 1

25問 • 5ヶ月前

ユーザ名非公開

通報

問題一覧

1. Main and nose wheel bays are:

b. unpressurized

2. Normal maximum negative differential pressure is:

a. when atmospheric pressure exceeds cabin pressure by the amount permitted by the system controls

3. When would the negative differential limit be reached/exceeded?

a. Rapid descent when AC descends below cabin altitude

4. A/C in level flight: if cabin altitude increases, pressure diff:

b. decreases

5. In level pressurized flight what does the outflow valve do?

b. Adjust to provide constant flow, and is normally partially open

6. In a turbo-compressor or bootstrap system the cooling air is:

a. ram air

7. The rate of change of cabin pressure should be kept to the minimum. This is more important:

a. in descent

8. A cabin humidifier is used:

b. at high altitude

9. Fatigue life of the fuselage is based on the:

a. number of pressurization cycles

10. If the forward oil seal in an axial flow compressor fails, cabin air will be:

a. contaminated

11. Rate of change of cabin altitude is shown on a:

a. special gauge

12. Cabin discharge valve (pneumatic) is supplied with:

b. cabin and static pressure

13. What is the purpose of the duct relief valve?

c. To prevent damage to the ducts

14. What system is installed to control the air conditioning?

b. Impingement type dehydrator and humidifier

15. How is the (charge) air cooled in a bootstrap (turbo-compressor) system?

b. By expanding over turbine driving compressor

16. At the max differential phase, the discharge phase is:

a. open

17. What is the purpose of inward relief valves?

a. To prevent negative differential

18. On a ground pressurization test, if the cabin suffers a rapid de-pressurization:

b. water precipitation will occur

19. A heat exchanger functions by:

c. passing charge air through ducts and cool air around ducts

20. Maximum differential pressure:

a. is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure

21. A humidifier is fitted to:

c. increase the moisture content in the air when operating at high altitude

22. If the discharge or outflow valve closes:

c. the safety valve would limit the positive pressure difference

23. Air for conditioning and pressurization is taken from:

a. the engine compressor or cabin compressor

24. Safety valves are biased:

a. inwards

25. Cabin compressors:

c. increase their flow in proportion to increases of altitude differential pressure and reduction in engine rpm in order to maintain the mass flow

Noor 2

Noor 2

Noor 3

Noor 3

Noor 4

Noor 4

Noor 5

Noor 5

Noor 6

Noor 6

問題一覧

1. Main and nose wheel bays are:

b. unpressurized

2. Normal maximum negative differential pressure is:

a. when atmospheric pressure exceeds cabin pressure by the amount permitted by the system controls

3. When would the negative differential limit be reached/exceeded?

a. Rapid descent when AC descends below cabin altitude

4. A/C in level flight: if cabin altitude increases, pressure diff:

b. decreases

5. In level pressurized flight what does the outflow valve do?

b. Adjust to provide constant flow, and is normally partially open

6. In a turbo-compressor or bootstrap system the cooling air is:

a. ram air

7. The rate of change of cabin pressure should be kept to the minimum. This is more important:

a. in descent

8. A cabin humidifier is used:

b. at high altitude

9. Fatigue life of the fuselage is based on the:

a. number of pressurization cycles

10. If the forward oil seal in an axial flow compressor fails, cabin air will be:

a. contaminated

11. Rate of change of cabin altitude is shown on a:

a. special gauge

12. Cabin discharge valve (pneumatic) is supplied with:

b. cabin and static pressure

13. What is the purpose of the duct relief valve?

c. To prevent damage to the ducts

14. What system is installed to control the air conditioning?

b. Impingement type dehydrator and humidifier

15. How is the (charge) air cooled in a bootstrap (turbo-compressor) system?

b. By expanding over turbine driving compressor

16. At the max differential phase, the discharge phase is:

a. open

17. What is the purpose of inward relief valves?

a. To prevent negative differential

18. On a ground pressurization test, if the cabin suffers a rapid de-pressurization:

b. water precipitation will occur

19. A heat exchanger functions by:

c. passing charge air through ducts and cool air around ducts

20. Maximum differential pressure:

a. is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure

21. A humidifier is fitted to:

c. increase the moisture content in the air when operating at high altitude

22. If the discharge or outflow valve closes:

c. the safety valve would limit the positive pressure difference

23. Air for conditioning and pressurization is taken from:

a. the engine compressor or cabin compressor

24. Safety valves are biased:

a. inwards

25. Cabin compressors:

c. increase their flow in proportion to increases of altitude differential pressure and reduction in engine rpm in order to maintain the mass flow