3-42.
Under what condition(s) is the left
main landing gear weight-on-wheels
switch in the closed position?
1.
When the strut is compressed
2.
When the strut is extended
3.
Neither of the above
3-43.
What stage of the compressor is the
primary source of bleed air for
operation of the ECS?
1.
1Oth
2.
12th
3.
14th
4.
16th
3-44.
Which of the following methods is
used to (a) control and (b) actuate
the bleed-air flow control and
shutoff valve?
1.
(a) Electric
(b) pneumatic
2.
(a) Electric
(b) electric
3.
(a) Pneumatic (b) electric
4.
(a) Pneumatic (b) pneumatic
3-45.
What air supply source(s) could be
used for engine starting and ground
operation of the air-conditioning
system?
1.
Ram air
2.
Ground start air
3.
APU air
4.
Both 2 and 3 above
3-46.
Which of the following conditions
will cause the bleed-air shutoff
valve to close?
1.
Overtemperature
2.
Overpressure
3.
Loss of electrical power
4.
All of the above
3-47. When
with
must
both
operating the deicing system
one engine secured, what valve
be open to allow bleed air to
sides of the aircraft?
1.
Bleed-air shutoff
2. Bleed-air flow control and
shutoff
3.
Engine bleed-air bypass and
shutoff
4.
Crossover duct isolation check
3-48.
What valve will open because of a
sensed pressure drop through the ice
screen?
1.
Bleed-air shutoff
2.
Bleed-air flow control and
shutoff
3.
Engine bleed-air bypass and
shutoff
4.
Nonice and low-limit control
3-49.
What do the lights for the bleed-air
shutoff valves indicate?
1.
Switch position
2.
Valve position
3.
Both 1 and 2 above
4.
High temperature
3-50.
In the event of a rupture in the
left or right manifold, what valve
will prevent overbleeding of the
engines?
1.
Bleed-air shutoff
2.
10th-stage check
3.
High-stage check
4.
Crossover duct isolation check
3-51.
What is the total number of basic
components in the refrigeration
subsystem?
1.
7
2.
8
3.
9
4. 10
2
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