LESSON
PRACTICE EXERCISE
Read the following situation and use that information to answer the
items in this Practice Exercise. Check your answers with the answers
that follow.
Situation: The NCOIC has assigned you to perform maintenance on the
NBC protection system of a M1A1 series tank.
1.
Which of
the
following
statements
describes
the
NBC
backup
system?
A.
Produces more air than the main NBC system with the engine
operating.
B.
Produces more air than the main NBC system without the
engine operating.
C.
Produces less air than the main NBC system; however the
engine must be operating.
D.
Produces less air than the main NBC system with or without
the engine operating.
2.
When the output of the engine drops below 400 shaft horsepower
(shp), at which of the following pressures (psig) will the
prioritization regulating valve maintain bleed air pressure?
A.
16
ƒ
3.
B.
16
ƒ
5.
C.
44
ƒ
3.
D.
44
ƒ
5.
3.
When the high differential solenoid fails to energize, at which
of the following pressures (psig) will the prioritization
regulating valve maintain bleed air pressure?
A.
16
ƒ
3.
B.
16
ƒ
5.
C.
44
ƒ
3.
D.
44
ƒ
5.
4.
Which of the following describes the type of fins and their
configuration in the heat exchanger bleed air flow?
A.
Square, wavy.
B.
Square, offset.
C.
Rectangular, wavy.
D.
Rectangular, offset.
42
OD1705
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