4. Which of the following foams is best suited for direct attack?
A. wet foams
B. semi-wet foams
C. fluid foams
D. dry foams
5. Class A fires typically will require which type of foam?
A. Low expansion foam
B. Mid expansion foam
C. High expansion foam
D. Super expansive foam
6. Which of the following is not a disadvantage of using a compressed air foam system?
A. Compressed air foam systems are expensive to purchase and maintain.
B. Hose reaction can be significant.
C. Hoselines are lighter than those full of water or foam solution.
D. Use of compressed air foam systems require additional training for firefighters and apparatus drivers/operators.
7. The foam type with a small bubble size, fast drain time, and is suitable for initial fire suppression, overhaul, and penetration into deep-seated fires is
A. dry foam.
Answer (2)
Wet foams are best for direct attack, while low expansion foams are suitable for Class A fires. A significant advantage of compressed air foam systems is that hoselines are lighter, and dry foams are effective for deep-seated fires. ;
Wet foams are best for direct attack, while low expansion foams are recommended for Class A fires. A significant advantage of compressed air foam systems is the lighter hoselines they offer. Dry foams are effective for rapid fire suppression and deep-seated fires.
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