Class A and B Fires

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Questions and Answers

What type of fires have live electrical currents or electrical equipment as a source of fuel?

  • Garbage fires
  • Class B fires
  • Class C fires (correct)
  • Class A fires

What is a characteristic of Class B fires?

  • They leave ash behind
  • They have a low flashpoint (correct)
  • They are typically found in residential settings
  • They have a high ignition temperature

What type of fires are commonly found in industrial settings?

  • Class A fires
  • Class B fires (correct)
  • Class C fires
  • All of the above

What is used to fight Class A fires?

<p>Water and foam agents (A)</p> Signup and view all the answers

What is a characteristic of Class A fires?

<p>They leave ash behind (B)</p> Signup and view all the answers

What should not be used to fight electrical fires?

<p>Water (D)</p> Signup and view all the answers

What type of agent should be used to put out Class D fires involving combustible metal fuel sources?

<p>Non-conductive chemical agent (C)</p> Signup and view all the answers

What is the primary industry where Class D fires are most likely to occur?

<p>Manufacturing and laboratory (B)</p> Signup and view all the answers

In the progression of a compartment fire, what stage comes after the growth stage?

<p>Fully developed stage (C)</p> Signup and view all the answers

What is a key aspect of a successful passive fire protection strategy?

<p>Using fire-resistant construction materials (B)</p> Signup and view all the answers

Which of the following is NOT a type of combustible metal that can cause Class D fires?

<p>Copper (B)</p> Signup and view all the answers

What is NOT a type of fire classification mentioned in the text?

<p>Class E (C)</p> Signup and view all the answers

What is the primary purpose of Class A, B, and C fire testing?

<p>To provide a level of fire protection to the roof deck (A)</p> Signup and view all the answers

What is the typical firefighting medium used in active fire protection systems?

<p>Water (B)</p> Signup and view all the answers

What is the range of flame spread indices for Class B fires?

<p>26-75 (A)</p> Signup and view all the answers

What is the primary characteristic of a Class C fire test?

<p>Light fire test exposure (A)</p> Signup and view all the answers

What is the purpose of a smoke development rating?

<p>To determine the amount of smoke produced over time (A)</p> Signup and view all the answers

What is the typical range of flame spread indices for Class A fires?

<p>0-25 (B)</p> Signup and view all the answers

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