ITFAS-Level-1 試験問題を無料オンラインアクセス

In the event of power loss, how long shall a secondary power source for household fire alarm systems maintain operation?

• A.24 hours in the normal condition followed by 4 minutes of alarm
• B.24 hours in the normal condition followed by 10 minutes of alarm
• C.24 hours in the normal condition followed by 60 minutes of alarm
• D.24 hours in the normal condition followed by 9 minutes of alarm

What is the periodic testing frequency of a control valve switch?

• A.Quarterly
• B.Semiannually
• C.Monthly
• D.Annually

How far away from the center line of the elevator door can a smoke detector be located?

• A.12 feet (3.7 meters)
• B.21 feet (6.4 meters)
• C.5 feet (1.5 meters)
• D.3 feet (1.0 meter)

When the main power is disconnected, how long should a power supply with emergency voice communication systems work in alarm mode?

• A.Maximum of 5 minutes
• B.Minimum of 5 minutes
• C.Maximum of 15 minutes
• D.Minimum of 15 minutes

Records of inspections, testing, and maintenance shall be provided in accordance with which section of NFPA 72?

• A.10.5.3
• B.7.6.6
• C.7.8.2
• D.14.6.3