CFAA Fire Alarm Technician · Question
Which of the following conditions is classified as a 'Supervisory' signal rather than a 'Trouble' signal?
A 'Trouble' condition results from an open, short, or ground fault that interferes with the integrity of the circuit. A 'Supervisory' signal (e.g., closed valve
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Question: Which of the following conditions is classified as a 'Supervisory' signal rather than a 'Trouble' signal?
Answer options:
- Open circuit on an IDP loop
- Ground fault on a notification circuit ✅ Closing of a sprinkler water supply valve
- Short circuit on a non-power limited line
Correct answer: Closing of a sprinkler water supply valve
Explanation: A 'Trouble' condition results from an open, short, or ground fault that interferes with the integrity of the circuit. A 'Supervisory' signal (e.g., closed valve) indicates a change in state of a monitored subsystem that is NOT an alarm.
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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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