CFAA Fire Alarm Technician · Question
What is the primary purpose of sensitivity testing smoke detectors?
Functional testing ensures the detector activates; sensitivity testing ensures it activates at the correct obscuration level (percent per foot).
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Question: What is the primary purpose of sensitivity testing smoke detectors?
Answer options:
- To ensure the detector can trigger the alarm ✅ To ensure the detector triggers within its marked obscuration range
- To check the battery level of the detector
- To verify the address of the device on the loop
Correct answer: To ensure the detector triggers within its marked obscuration range
Explanation: Functional testing ensures the detector activates; sensitivity testing ensures it activates at the correct obscuration level (percent per foot).
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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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