Texas Fire Alarm License Practice Test

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Study for the Texas Fire Alarm License Test. Review with flashcards and multiple choice questions, each question offers hints and explanations. Prepare thoroughly and boost your confidence for the exam!

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What technology is used in Photo Electric Light Scattering Smoke Detection?

  1. A microphone and speaker system

  2. A light source and photosensitive sensor

  3. A gas sensor and alarm signal

  4. A thermal camera and visual alert

The correct answer is: A light source and photosensitive sensor

In Photo Electric Light Scattering Smoke Detection, the mechanism relies on a light source and a photosensitive sensor to detect smoke particles in the air. This technology operates on the principle of light scattering, where light emitted from a source is interrupted by smoke particles present in the environment. When smoke enters the detection chamber, the particles scatter the light, causing the photosensitive sensor to detect a significant change in light intensity. This response triggers the alarm system, indicating the presence of smoke. The use of a light source and sensor is fundamental to this type of smoke detection because it effectively allows for the identification of smoke at various stages, making it a reliable option for early fire detection.

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