Module 16 Piston Engine Practice Questions - UK CAA Part-66 AME Module 16 - Piston Engine Exam

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In a standard four-stroke Otto cycle engine, during which stroke does ignition take place, and what is the exact position of the crankshaft relative to Top Dead Center (TDC)?

Ignition occurs at exact Top Dead Center (TDC) of the power stroke. Ignition occurs slightly after Top Dead Center (ATDC) at the beginning of the power stroke. Ignition occurs at Bottom Dead Center (BDC) between compression and power strokes. Ignition occurs slightly before Top Dead Center (BTDC) near the end of the compression stroke.

Correct Answer:

Ignition occurs slightly before Top Dead Center (BTDC) near the end of the compression stroke.

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