NCIDQ IDFX Practice Exam

What is an advantage of fluorescent lamps?

1. Higher initial cost.

2. Limited color temperature options.

3. High efficacy and long life.

4. Simple dimming capability.

The correct answer is: High efficacy and long life.

Fluorescent lamps are known for their high efficacy and long lifespan, making them a popular choice in various lighting applications. Efficacy refers to the amount of light produced per watt of electricity consumed, and fluorescent lamps typically offer much higher efficacy compared to traditional incandescent bulbs. This means they can produce more light while using less energy, which can lead to significant cost savings on electricity bills over time. In addition to their energy efficiency, fluorescent lamps also have a longer operational life, often lasting several years with regular use. This longevity reduces the frequency of replacements, thereby minimizing maintenance costs and effort, particularly in commercial settings where access to fixtures can be challenging. The other options highlight disadvantages or limitations associated with fluorescent lighting. Although fluorescent lamps may have an initial cost that is higher than that of incandescent options, this is often offset by their energy savings and lifespan. Limited color temperature options refer to the fact that fluorescent lighting can sometimes produce a less desirable light quality compared to other lighting technologies. Dimming capability for fluorescent lamps is also less straightforward compared to incandescent bulbs, often requiring special equipment to achieve effective dimming. These factors emphasize the strengths of fluorescent lamps in terms of efficiency and longevity.