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LLPSD - FFI Chapter 15- Questions & Answers
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LLPSD - FFI Chapter 15- Questions & Answers
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LLPSD - FFI Chapter 15- Questions &Answers
What is the preferred method to ventilate a large building?
a. trench cut
b. multiple roof openings
c. vertical ventilation
d. individual ventilation of interior compartments Correct Ans-d. individual ventilation of
interior compartments
Which statement about hydraulic ventilation is correct?
a. a straight or solid stream is used
b. a medium diameter line is required
c. hydraulic ventilation effectively moves large volumes of smoke and heat
d. the ventilation crew is not exposed to products of combustion Correct Ans-c. hydraulic
ventilation effectively moves large volumes of smoke and heat
How can churning be eliminated during smoke ejection?
a. increase the number or size of exhaust openings
b. raise the fan in the opening
c. pull the fan back a few inches
d. completely block the opening around the fan Correct Ans-d. completely block the opening
around the fan
,How do heated gases move in a room?
a. they spread laterally to the walls and then begin to rise
b. they seek the lowest point and settle there
c. they rise to the ceiling and spread outward
d. they disperse evenly throughout the entire volume of the room Correct Ans-c. they rise to
the ceiling and spread outward
All forms of ventilation that use fans or other powered equipment are classified as _____
ventilation.
a. hydraulic
b. assisted
c. positive pressure
d. mechanical Correct Ans-d. mechanical
Which type of ventilation relies on doors and windows on the same level as the fire?
a. positive pressure
b. horizontal
c. natural
d. passive Correct Ans-b. horizontal
Which statement about the operation of HVAC equipment during fire ventilation operations is
correct?
, a. HVAC systems should be shut down as soon as possible
b. it is important to maintain power to the HVAC system at all times
c. HVAC systems are designed to automatically shut down when smoke is detected
d. some HVAC systems incorporate features that are useful for clearing smoke Correct Ans-d.
some HVAC systems incorporate features that are useful for clearing smoke
Which term means the spread of fire from one floor to another via exterior windows?
a. laddering
b. leap-frogging
c. flashover
d. stack effect Correct Ans-b. leap-frogging
What occurs when room temperature reaches the ignition point of the combustibles within it?
a. backdraft
b. lapping
c. flashover
d. mushrooming Correct Ans-c. flashover
Which type of building is the most prone to the stack effect?
a. shopping mall
b. warehouse
c. high rise
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