CFAA Fire Alarm Technician · Question
What is the basic requirement for all fire alarm circuits to ensure they are connected and 'healthy' during normal standby?
The system must be supervised so that an open, short, or ground fault is reported as a Trouble signal at the Control Unit. 2-hour rating is for operation during
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Question: What is the basic requirement for all fire alarm circuits to ensure they are connected and 'healthy' during normal standby?
Answer options:
- 2-hour Fire Rating ✅ Supervision at the Control Unit
- Gold-plated terminals
- Power-limited source only
Correct answer: Supervision at the Control Unit
Explanation: The system must be supervised so that an open, short, or ground fault is reported as a Trouble signal at the Control Unit. 2-hour rating is for operation during fire, not supervision.
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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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