Fire Alarm Systems Flashcards
6 cards from real NICET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Fire Alarm Systems flashcards as text
What is the maximum allowable voltage drop on a Notification Appliance Circuit under full load?
Answer: 10%
NFPA 72 and most manufacturer specifications allow a maximum 10% voltage drop on a NAC under full alarm load.
Which initiating device is designed to detect the rate of temperature increase rather than an absolute temperature threshold?
Answer: Rate-of-rise heat detector
A rate-of-rise heat detector activates when the temperature rises faster than a specified rate, typically 15°F per minute.
A NICET Level I fire alarm technician is best described as someone who:
Answer: Performs basic tasks under close supervision
NICET Level I represents entry-level technicians who perform basic tasks under close supervision of more experienced personnel.
What information must be permanently posted at the fire alarm control unit location?
Answer: Record of completion and as-built drawings
NFPA 72 requires a record of completion and as-built drawings to be kept at or near the fire alarm control unit for reference.
Which of the following is a supervisory signal in a fire alarm system?
Answer: Low air pressure in a dry sprinkler system
Low air pressure in a dry-pipe sprinkler system is a supervisory condition indicating the system may not function as designed, not an active alarm.
What is the primary purpose of the end-of-line resistor in a Class B initiating device circuit?
Answer: To allow the panel to supervise the circuit for open faults
The end-of-line resistor provides a known resistance value that allows the fire alarm panel to continuously supervise the circuit and detect open-circuit faults.