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Showing results 541 - 550 of 1029 total.
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M.8.5.4.1.A.1
AMA
Knowledge Code: M01
The air cycle cooling system produces cold air by
A) extracting heat energy across a compressor.
*B) extracting heat energy across an expansion turbine.
C) passing air through cooling coils that contain a refrigerant.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.2.A.1
AMA
Knowledge Code: M01
(Refer to figure 13.) Determine what unit is located immediately downstream of the expansion valve in a freon refrigeration system.
A) Compressor.
B) Condenser.
*C) Evaporator coils.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.3.A.1
AMA
Knowledge Code: M01
When checking a freon system, a steady stream of bubbles in the sight gauge indicates the charge is
A) correct.
B) high.
*C) low.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.4.B.1
AMA
Knowledge Code: M01
An aircraft pressurization cycle is normally considered to be
A) one take off and one landing.
*B) one complete series of events or operations that recur regularly.
C) when the fuselage reaches its maximum pressure differential one time.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.5.A.1
AMA
Knowledge Code: M01
Which best describes cabin differential pressure?
A) Difference between cabin pressure controller setting and actual cabin pressure.
*B) Difference between the ambient and internal air pressure.
C) Difference between cabin flight altitude pressure and Mean Sea Level pressure.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.6.B.1
AMA
Knowledge Code: M01
Composite oxygen bottles that conform to DOT-E-8162 have a service life of
A) 10 years or 5000 filling cycles whichever occurs first.
B) 5 years or 5000 filling cycles whichever occurs first.
*C) 15 years or 10 000 filling cycles whichever occurs first.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.7.A.1
AMA
Knowledge Code: M01
The cabin pressurization modes of operation are
*A) differential, unpressurized, and isobaric.
B) ambient, unpressurized, and isobaric.
C) isobaric, differential, and maximum differential.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.8.A.1
AMA
Knowledge Code: M01
(1) Usually bleed air from a gas-turbine engine compressor can be safely used for cabin pressurization.
(2) Independent cabin condition air machines (air cycle machine) can be powered by bleed air from an aircraft turbine engine compressor.
Regarding the above statements,
A) only No. 2 is true.
B) only No. 1 is true.
*C) both No. 1 and No. 2 are true.
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Modified: 7/27/2011 flatheadv8
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M.8.5.4.9.A.1
AMA
Knowledge Code: M01
A pressurization controller uses
A) bleed air pressure, outside air temperature, and cabin rate of climb.
*B) barometric pressure, cabin altitude, and cabin rate of change.
C) cabin rate of climb, bleed air volume, and cabin pressure.
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Modified: 7/27/2011 flatheadv8
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M.8.5.5.0.A.1
AMA
Knowledge Code: M01
What unit in a vapor cycle cooling system serves as a reservoir for the refrigerant?
*A) Receiver dryer.
B) Evaporator.
C) Condenser.
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Modified: 7/27/2011 flatheadv8
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