AMP - Aviation Maintenance Technician Powerplant Practice Exam

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Prepare for the Aviation Maintenance Technician Powerplant Exam with comprehensive flashcards and multiple choice questions. Equip yourself with detailed explanations and tips to succeed.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Defective spark plugs will cause the engine to run rough at which speeds?

During run up.
During cruise.
At all speeds.
Only at high speeds.

The correct answer is: At all speeds.

When spark plugs are defective, it means that they are not able to efficiently ignite the air-fuel mixture in the engine. This can lead to a rough running engine at any speed, not just during specific phases such as during run up or cruise. Defective spark plugs can result in misfiring and reduced engine performance, making it difficult for the engine to operate smoothly at any speed. Therefore, the correct option is C - at all speeds. Options A, B, and D are all incorrect because they suggest that defective spark plugs can only impact the engine at certain speeds, which is not the case.