NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

What do rapid start lamps need to operate?

1. A ballast

2. A starter

3. An ignitor

4. A key

The correct answer is: A ballast

Rapid start lamps require a ballast to operate effectively. The ballast is essential as it regulates the current flowing through the lamp, allowing it to start and function properly. In the case of rapid start fluorescent lamps, the ballast provides a higher starting voltage to initially ignite the lamp and then reduces the voltage to a lower operating level once the lamp is lit. While starters are typically associated with instant start or pre-heat fluorescent lamps to help facilitate ignition, rapid start lamps achieve a different operational behavior through the ballast, which maintains a steady state once the lamp is running. An ignitor may be used with other types of lamps, such as high-intensity discharge lamps, but is not necessary for rapid start lamps. Additionally, the concept of needing a key does not apply to the operational requirements of lighting systems. Understanding the role of the ballast in rapid start lamps is crucial for working effectively with different types of lighting technologies.