railway Gujarat Metro Maintainer 2023 Mock Test Electrician and Wireman Occupational Safety and Health
What are the parts of a fire alarm system?
1
Bell, fan, pump, lamp, heater etc.
2
Switch, socket, heat, fuse etc.
3
Smoke and heat detectors, bells, DCAM panels, alarm panels, batteries, etc.
4
Heaters, pumps, bells, fans etc.