Questions on "Aircraft System"

[truefaith]

I have some questions pertaining to aircraft system. Can somebody help? :)

Q1. Within the cold air unit of the ACM (Air Cycle Machine), the turbine causes
(a) the air tempertaure to rise
(b) the air temperature to drop
(c) the air to further compress
(d) the air pressure to be the same

Q2. In a vapour cycle cooling system, the lowest temperature of the refrigerant is at the _____?
(a) expansion valve
(b) compressor
(c) condenser
(d) evaporator

Q3. The refrigerant of a vapour cycle cooling system on entering the compressor is
(a) a high pressure vapour
(b) a high pressure liquid
(c) a low pressure vapour
(d) a low pressure liquid

Q4. Main and nose wheel bays are:
(a) pressurised
(b) unpressurised
(c) conditioned
(d) different, with the mains being unpressurised and the nose pressurised.

Q5. When would the negative differential limit be reached/exceeded?
(a) rapid descent when aircraft descends below cabin altitude
(b) during ground pressure testing
(c) rapid ascent when aircraft climbs
(d) when changing to manual operation

Q6. The term pressure cabin is used to describe
(a) pressurisation of the flight deck only
(b) the ability to pressurise the aircraft at a higher ambient pressure
(c) the cabin pressure on an airliner
(d) the ability to maintain a constant pressure differential at all altitudes

[dixi188]

Hi.

I presume you are a student.

If I just tell you the answers you won't learn much.

I suggest you research the systems so you have an understanding of them and then come back with your answers for others to comment on and provide help on any points you are having trouble with.

Good luck with your studies.

[truefaith]

Can somebody provide me with the answer?

Thank you.

[Checkboard]

1 b, 2 a, 3 c, 4 b, 5 a, 6 b (probably). :rolleyes:

[truefaith]

1 b, 2 a, 3 c, 4 b, 5 a, 6 b (probably). :rolleyes:
wow...thank you!

[BOAC]

Take note of Dixi188 and tell us what you have learnt. Anyone can give you the answers, few can teach you.

[spannersatcx]

The answer is b for all of them:ok:

[hetfield]

No,

it's always a) alternating to c)

That's one of the secrets to become a commercial pilot.

DON'T TELL ANYBODY!

[sani-com]

Just a few pointers on answering multiple-choice tests that I have learned over the years -
- RTFQ! (Read The F***ing Question),
- Using what knowledge you have, eliminate the obvious incorrect answers,
- Of the remaining answers, there may be one that is correct only under certain circumstances and the other is correct 99% of the time. Go for the 99% answer.
- If you still have no idea, the answer is (C).