170 free practice questions for this exam, each with the reason for the answer and where to look it up.
10 questions, graded as you go, with the reason for every answer. No sign-up.
| Exam | Aviation mechanic General |
|---|---|
| Who runs it | FAA |
| Where | United States |
Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.
Which type of drawing gives all the information needed to make a single part?
B. Detail drawing
A detail drawing describes one part completely: shape, size, material and finish. An assembly drawing shows how two or more parts go together and usually leaves out the information needed to make each one.
Reference: FAA-H-8083-30, Aircraft Drawings (types of drawings)
A landing light draws 9 A from a 28 V DC bus. How much power does it use?
Answer in W.
252 W
P = E × I = 28 V × 9 A = 252 W.
Reference: FAA-H-8083-30, Fundamentals of Electricity and Electronics (power)
Which extinguisher is suitable for a fire in energized electrical equipment?
A. Carbon dioxide
Carbon dioxide does not conduct electricity and leaves no residue, so it suits Class C fires. Water and water-based agents conduct current and put the operator at risk of shock.
Reference: FAA-H-8083-30, Safety, Ground Operations and Servicing (fire protection; extinguishing agents)
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