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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The position of the thermostatic expansion valve in a vapor cycle cooling system is determined by temperature and pressure of the

  1. freon in the inlet of the compressor

  2. freon in the outlet of the evaporator

  3. ambient air

  4. air inside the cabin

The correct answer is: freon in the outlet of the evaporator

In a vapor cycle cooling system, the position of the thermostatic expansion valve is crucial for regulating the flow of refrigerant into the evaporator. The thermostatic expansion valve controls the flow based on the temperature and pressure of the refrigerant at the outlet of the evaporator. By monitoring these parameters, the valve ensures that the right amount of refrigerant enters the evaporator to achieve efficient cooling. Therefore, option B is the correct answer. Options A, C, and D are incorrect because the position of the thermostatic expansion valve is primarily determined by the condition of the refrigerant at the outlet of the evaporator, not at the inlet of the compressor, ambient air, or the air inside the cabin.

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