NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

Which of the following is a benefit of electronic ballasts?

1. Less flicker

2. Greater efficiency

3. Quieter operation

4. All of the above

The correct answer is: All of the above

Choosing "All of the above" as the answer highlights that electronic ballasts provide a range of benefits that improve lighting performance and efficiency. First, less flicker is significant because electronic ballasts generally operate at higher frequencies than magnetic ballasts. This higher frequency reduces flicker, which can lead to better visual comfort and reduced eye strain for those working or spending time in well-lit environments. Next, when it comes to greater efficiency, electronic ballasts are designed to convert electricity into usable light more effectively. They have better power factor ratings and can control the flow of electricity to the lamps, resulting in less energy waste. This means that they can provide more light output per watt consumed, which can also contribute to lowering energy bills. Lastly, quieter operation is another advantage that electronic ballasts offer. They tend to operate silently or with minimal noise compared to magnetic ballasts, which can produce a humming sound due to their mechanical components. This feature is particularly beneficial in settings where noise reduction is essential, such as in offices, classrooms, or theaters. Overall, the correct answer captures the comprehensive benefits that electronic ballasts bring to lighting systems, making them a preferred choice in many applications.