LESSON 3
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you complete the exercise, check your answer with the answer key that
follows. If you answer any item incorrectly, study again that part of the lesson which contains the
portion involved.
Situation: The mission requires an operational M157 Smoke Generator System with trained personnel to
fulfill the mission.
1.
What should be added to fog oil when operating at temperatures below 32 F (0 C) ?
A.
Antifreeze
B.
Ether
C.
Kerosene
D.
30W motor oil
2.
How long should the purge button be depressed during starting procedures on the M157 Smoke
Generator System?
A.
Two seconds
B.
Three seconds
C.
Three to five seconds
D.
Until the air indicator light comes on
3.
What type of fuel should be used in the M157 Smoke Generator System during operations in
extreme cold?
A.
Kerosene
B.
Ether
C.
Diesel
D.
Type 2 automotive combat gasoline
4.
During operations in extreme heat, to what pressure should the fog oil pump pressure relief valve
be adjusted?
A.
25 psig.
B.
30 psig.
C.
35 psig.
D.
40 psig.
CM3305
3-16
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