FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Prepare for the FAA AMT Airframe Exam with our comprehensive quiz. This resource offers multiple-choice questions designed to enhance your knowledge and understanding of aviation maintenance concepts.

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What is the purpose of a mixing valve in a compressor bleed air air-conditioning system?

  1. Control the supply of hot, cool, and cold air

  2. Increase airflow pressure

  3. Decrease airflow pressure

  4. Filter contaminants

The correct answer is: Control the supply of hot, cool, and cold air

A mixing valve is a device that allows for the control and mixing of hot, cool, and cold air in a compressor bleed air air-conditioning system. Its main purpose is to regulate and maintain a desired temperature within the system based on outside air temperature changes. Options B and C are incorrect because they pertain to changing airflow pressure, not temperature regulation. Option D is incorrect because filtering contaminants is not the intended purpose of a mixing valve in this system.

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