CFAA Fire Alarm Technician · Question
How should the terminal voltage of a fire alarm battery be measured during an annual inspection?
The voltage must be checked while the system is operating on battery power (AC disconnected) to ensure it can handle the load.
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Question: How should the terminal voltage of a fire alarm battery be measured during an annual inspection?
Answer options: ✅ With the AC power disconnected (under load)
- With the batteries disconnected from the panel
- Only while the charger is actively charging
- Using a screwdriver to short the terminals
Correct answer: With the AC power disconnected (under load)
Explanation: The voltage must be checked while the system is operating on battery power (AC disconnected) to ensure it can handle the load.
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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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