CFAA Fire Alarm Technician · Question
What is the maximum allowable sound pressure level for a fire alarm signal in any occupied area?
High ambient noise levels require signals to be 5 dBA above the maximum sound level lasting 60 seconds, but the total shall not exceed 110 dBA to prevent hearin
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Question: What is the maximum allowable sound pressure level for a fire alarm signal in any occupied area?
Answer options:
- 100 dBA ✅ 110 dBA
- 120 dBA
- 130 dBA
Correct answer: 110 dBA
Explanation: High ambient noise levels require signals to be 5 dBA above the maximum sound level lasting 60 seconds, but the total shall not exceed 110 dBA to prevent hearing damage.
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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