NALMCO Certified Apprentice Lighting Technician (CALT) Practice Exam

What type of lighting system is considered energy-efficient and flexible?

1. Conventional HID systems

2. Tungsten filament systems

3. LED lighting systems

4. Incandescent systems

The correct answer is: LED lighting systems

LED lighting systems are recognized as energy-efficient and flexible for several reasons. First and foremost, LEDs (Light Emitting Diodes) consume significantly less energy compared to traditional lighting sources. This efficiency means they convert a higher percentage of energy into usable light rather than heat, resulting in lower energy bills and reduced environmental impact. Furthermore, LED systems have a long lifespan, often lasting tens of thousands of hours, which reduces the frequency of replacements and maintenance costs. Their flexibility comes from various options in terms of color temperature, brightness, and dimming capabilities. This versatility allows them to be used in a wide range of applications, from residential to commercial settings, and allows for more creative lighting designs. In contrast, conventional HID systems, tungsten filament systems, and incandescent systems generally have higher energy consumption and shorter lifespans, lacking the adaptability and efficiency that LED systems provide. These traditional options often rely on more energy to produce equivalent light levels, which is why they do not match the energy-efficient and flexible nature of LED technology.