CFAA Fire Alarm Technician · Question
What signal is generated if a smoke detector head is removed from its base on a supervised conventional circuit?
Removing a detector from a 2-wire base without a continuity spring breaks the circuit path to the EOL, causing an open-circuit 'Trouble'. CAN/ULC-S536.
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Question: What signal is generated if a smoke detector head is removed from its base on a supervised conventional circuit?
Answer options:
- No signal is generated
- An alarm signal is generated ✅ A trouble signal is generated
- A ground fault is generated
Correct answer: A trouble signal is generated
Explanation: Removing a detector from a 2-wire base without a continuity spring breaks the circuit path to the EOL, causing an open-circuit 'Trouble'. CAN/ULC-S536.
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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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