Engine 2014: Electricity

1. A regulate the current drawn by the fluorescent tube once the arc has been stricken
2. B provide power factor correction
3. C initially heat the fluorescent tube filaments at startup and cause the ballast to shrike the arc to fire the tube after warm-up
4. D to rapidly strike the arc to fire the tube nearly instantly after the lighting fixture switch is closed

Tip: press A-D to answer