NCIDQ IDFX Practice Exam

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Prepare for the NCIDQ IDFX Exam with our interactive quiz. Use flashcards and multiple choice questions with hints and explanations. Boost your confidence now!

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Compact fluorescent lamps are characterized by:

Large bulb size.
U-shaped design with pins on one end.
Higher heat output than incandescent bulbs.
Lack of dimming capability.

The correct answer is: U-shaped design with pins on one end.

Compact fluorescent lamps (CFLs) are typically designed with a U-shaped configuration that allows them to be compact while still providing a luminance similar to that of traditional incandescent bulbs. The unique U-shape helps in fitting the bulb into smaller light fixtures, making them versatile for various applications. Additionally, the design usually includes pins or a base that connects directly to the fixture, facilitating easy installation. This design is distinct compared to other bulb types, such as incandescent bulbs which are generally round, and LED bulbs which may have various shapes but are often not U-shaped specifically. The compact nature and pin connection of CFLs highlight their efficiency and practicality, thus making option B the most accurate characterization of compact fluorescent lamps.