Which term describes the piston's position at the top of its stroke?

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Multiple Choice

Which term describes the piston's position at the top of its stroke?

Explanation:
Top dead center describes the piston's position at the very top of its travel in the cylinder. The piston moves between this top position and the bottom dead center, which is the lowest point. Mid-stroke would be somewhere between top and bottom, and idle position isn’t a standard term for piston location. In many engines, the piston reaches top dead center at the end of the compression stroke (and again at the end of the exhaust stroke in a four-stroke cycle), making it the precise term for the topmost point of travel.

Top dead center describes the piston's position at the very top of its travel in the cylinder. The piston moves between this top position and the bottom dead center, which is the lowest point. Mid-stroke would be somewhere between top and bottom, and idle position isn’t a standard term for piston location. In many engines, the piston reaches top dead center at the end of the compression stroke (and again at the end of the exhaust stroke in a four-stroke cycle), making it the precise term for the topmost point of travel.

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