NCIDQ IDFX Practice Exam

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What feature distinguishes the GU-24 lamp?

Low voltage operation.
It has a 2-PIN base.
It is not energy efficient.
High wattage output.

The correct answer is: It has a 2-PIN base.

The feature that distinguishes the GU-24 lamp is that it has a 2-PIN base. This type of base is designed for compact fluorescent lamps (CFLs) and some LED lamps, which makes it distinct in terms of design and compatibility with light fixtures. The 2-PIN configuration allows for easy installation and removal in fixtures designed to accept this type of lamp. The GU-24 base is part of a broader effort to improve energy efficiency by standardizing lamp shapes and sizes, particularly for energy-efficient lighting applications. By using a specific base type, manufacturers can promote the use of energy-efficient lamps, which aligns with modern lighting standards. Although low voltage operation, high wattage output, and energy efficiency are important features of various lighting options, they are not exclusive characteristics of the GU-24 lamp. In fact, many GU-24 lamps are designed to operate at standard line voltage, and they typically focus on providing energy savings rather than high wattage output. This makes the 2-PIN base the most defining feature of the GU-24 lamp.