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 primary purpose of a hydraulic actuating unit?

  1. To cool the fluid

  2. To filter the fluid

  3. To transform fluid pressure into useful work

  4. To store extra fluid

The correct answer is: To transform fluid pressure into useful work

A hydraulic actuating unit is specifically designed to transform fluid pressure into useful work, making it the primary purpose of this unit. This is accomplished through the use of pistons and cylinders, which convert the energy from the pressurized fluid into mechanical force. Option A, cooling the fluid, would be the purpose of a separate cooling unit and is not the primary purpose of a hydraulic actuating unit. Option B, filtering the fluid, is also not the primary purpose of this unit as it would be the job of a separate filter. Option D, storing extra fluid, would be the job of a separate reservoir and is not the main purpose of a hydraulic actuating unit.