Certified Technology Specialist (CTS) Practice Exam

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Which lamp technology is preferred for projectors to achieve long life without changing the light source?

Halogen lamp
LED lamp
Xenon lamp
LCD lamp

The correct answer is: LED lamp

LED lamp technology is preferred for projectors aiming to achieve long lifespan without the need for frequent light source changes. LEDs are known for their longevity, often lasting 20,000 hours or more, which is significantly longer than traditional light sources. This extended lifespan can greatly reduce maintenance efforts and costs, making LED projectors more attractive for long-term use. Furthermore, LEDs offer instant on/off capabilities, greater energy efficiency, and less heat output compared to other lamp technologies, enhancing their appeal in projector applications. Other technologies, such as halogen and xenon lamps, typically have shorter lifespans and require more frequent replacements, which can lead to increased operational costs and downtime. LCD lamp technology, while effective, does not provide the same longevity benefits as LED. Therefore, using LED technology aligns with the goal of minimizing maintenance and maximizing uptime for users of projectors.