8. The proportioning method that uses the pressure of the stream to induct, or draft, foam concentrate into the
A. injection
B. induction
C. premixing
D. batch mixing
9. When finished foam is applied, it is white. Which answer below best describes the particular benefit from this
A. Vapor suppression
B. Radiant heat reflectivity
C. Increased wetting capability
D. Rapid fuel cooling
10. Which of the following foam delivery systems operates using the Venturi principle?
A. Injection systems
B. Induction
Answer (2)
The questions address various methods of foam delivery systems in firefighting. The induction method utilizes water pressure to draw foam concentrate, while the white color of foam aids in heat reflectivity. Lastly, induction systems operate using the Venturi principle to mix foam effectively. ;
The answers to the foam delivery questions indicate that the induction method draws foam concentrate using water pressure, while white foam provides radiant heat reflectivity. Furthermore, induction systems operate on the Venturi principle to effectively mix foam. The chosen options are: B (induction), B (radiant heat reflectivity), and B (induction).
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